7Baggers

Ormat Technologies, Inc
(NYSE:ORA) 

ORA stock logo

Ormat Technologies, Inc. engages in the geothermal and recovered energy power business in the United States, Indonesia, Kenya, Turkey, Chile, Guadeloupe, Guatemala, Ethiopia, New Zealand, Honduras, and internationally. The company operates through three segments: Electricity, Product, and Energy Sto...

Founded: 1965
Full Time Employees: 1,408
Sector: Utilities
Industry: Utilities-Renewable

Share this website to your friends
• Market Cap:
• Exchange:
• Shs Outstanding:
• Employees:
• Beta:
• Return on Equity (ROE) ttm:
• Return on Assets (ROA) ttm:
• EPS ttm:
• Book value per Share:
• Cash per Share:
• Current ast per Share:
• P/E ttm:
• P/E forward:
• P/E ttm high:
• P/E ttm low:
• P/S ttm:
• P/B ttm:
• P/FCF ttm:
• PEG ratio:
• Cash Ratio ttm:
• Quick Ratio ttm:
• Current Ratio ttm:
• Gross Mgn ttm:
• EBITDA Mgn ttm:
• Operating Mgn ttm:
• Net Income Mgn ttm:
• Trailing Div yield:
• Forward Div yield:
• Payout Ratio ttm:
• Ex-Dividend date:
• Target Price High:
• Target Price Low:
• Target Price Mean:
• Number of Analysts:
• Debt Ratio ttm:
• Debt to Equity ttm:
• Total Net Debt:
At a glance:
Bull Thesis:
Bear Thesis:
Main Competitors:
Moat:
Income Statements:
Quarterly
Annual
    Unit: USD2026-03-31 2025-12-31 2025-09-30 2025-06-30 2025-03-31 2024-12-31 2024-09-30 2024-06-30 2024-03-31 2023-12-31 2023-09-30 2023-06-30 2023-03-31 2022-12-31 2022-09-30 2022-06-30 2022-03-31 2021-12-31 2021-09-30 2021-06-30 2021-03-31 2020-12-31 2020-09-30 2020-06-30 2020-03-31 2019-12-31 2019-09-30 2019-06-30 2019-03-31 2018-12-31 2018-09-30 2018-06-30 2018-03-31 2017-12-31 2017-09-30 2017-06-30 2017-03-31 2016-12-31 2016-09-30 2016-06-30 2016-03-31 2015-09-30 2015-06-30 2015-03-31 2014-09-30 2014-06-30 2014-03-31 2013-09-30 2013-06-30 2013-03-31 2012-12-31 2012-09-30 2012-06-30 2012-03-31 2011-12-31 2011-09-30 2011-06-30 2011-03-31 2010-12-31 2010-09-30 2010-06-30 2010-03-31 2009-12-31 2009-09-30 2009-06-30 2009-03-31 2008-12-31 2008-09-30 2008-06-30 2008-03-31 2007-12-31 2007-09-30 2007-06-30 2007-03-31 2006-12-31 2006-09-30 2006-06-30 2006-03-31 2005-12-31 2005-09-30 2005-06-30 2005-03-31 2004-12-31 2004-09-30 
                                                                                        
      revenues:
                                                                                        
      electricity
    181,603,000 186,637,000 167,110,000 159,912,000 180,241,000 180,147,000 164,638,000 166,226,000 191,253,000 183,921,000 157,212,000 155,324,000 170,310,000 165,187,000 152,820,000 151,195,000 162,525,000 164,268,000 142,651,000 133,864,000 144,988,000 146,192,000 123,660,000 128,685,000 142,856,000 144,368,000 123,978,000 129,079,000 142,908,000 138,320,000 116,891,000 122,179,000 132,489,000 128,503,000 112,273,000 111,777,000 115,776,000 114,628,000 109,795,000 104,001,000 107,868,000 97,245,000 90,926,000 89,953,000 102,506,000 91,692,000 94,817,000 88,994,000 87,713,000 71,102,000 78,819,000 81,452,000 85,011,000 82,247,000 77,576,000 86,815,000 81,190,000 78,268,000 102,021,000 67,913,000 68,807,000 66,105,000 63,940,000 68,715,000 60,562,000 62,638,000                   
      product
    177,383,000 63,058,000 62,247,000 59,612,000 31,769,000 39,643,000 37,357,000 37,829,000 24,832,000 50,432,000 39,831,000 33,458,000 10,042,000 32,177,000 14,217,000 10,392,000 14,628,000 20,340,000 10,527,000 7,410,000 8,643,000 27,388,000 29,625,000 43,701,000 47,411,000 43,814,000 43,037,000 52,030,000 52,128,000 49,717,000 48,439,000 54,915,000 48,672,000 37,862,000 44,912,000 67,587,000 74,122,000 51,891,000 74,822,000 55,860,000 43,726,000 65,607,000 49,561,000 30,278,000 37,736,000 35,911,000 47,619,000 41,755,000 64,966,000 50,608,000 37,263,000 54,685,000 44,826,000 50,105,000 46,158,000 24,026,000 23,424,000 19,552,000 -46,627,000 51,113,000 27,459,000 16,549,000 31,352,000 51,113,000 39,673,000                    
      energy storage
    44,925,000 26,341,000 20,370,000 14,494,000 17,752,000 10,951,000 9,789,000 8,908,000 8,081,000 6,987,000 11,013,000 6,014,000 4,880,000 8,122,000 8,848,000 7,491,000 6,557,000 6,381,000 5,664,000 5,627,000 12,721,000                                                                
      total revenues
    403,911,000 276,036,000 249,727,000 234,018,000 229,762,000 230,741,000 211,784,000 212,963,000 224,166,000 241,340,000 208,056,000 194,796,000 185,232,000 205,486,000 175,885,000 169,078,000 183,710,000 190,989,000 158,842,000 146,901,000 166,352,000 179,382,000 158,947,000 174,900,000 192,113,000 192,442,000 170,499,000 184,065,000 199,038,000 190,465,000 166,480,000 178,299,000 184,023,000 166,365,000 157,185,000 179,364,000 189,898,000 166,519,000 184,617,000 159,861,000 151,594,000   120,231,000 140,242,000 127,603,000 142,436,000 130,749,000 152,679,000 121,710,000 116,082,000 136,137,000 129,837,000 132,352,000 123,734,000 110,841,000 104,614,000 97,820,000 55,394,000 119,026,000 96,266,000 82,654,000 95,292,000 119,828,000 100,235,000 99,889,000 95,499,000 99,726,000 80,221,000 69,387,000 70,653,000 79,467,000 84,052,000 61,747,000 66,682,000 77,848,000 64,086,000 60,321,000 58,781,000 69,290,000 55,739,000 53,896,000 40,747,250 63,283,000 
      yoy
    75.80% 19.63% 17.92% 9.89% 2.50% -4.39% 1.79% 9.33% 21.02% 17.45% 18.29% 15.21% 0.83% 7.59% 10.73% 15.10% 10.43% 6.47% -0.07% -16.01% -13.41% -6.79% -6.78% -4.98% -3.48% 1.04% 2.41% 3.23% 8.16% 14.49% 5.91% -0.59% -3.09% -0.09% -14.86% 12.20% 25.27%   32.96% 8.09%   -8.04% -8.15% 4.84% 22.70% -3.96% 17.59% -8.04% -6.18% 22.82% 24.11% 35.30% 123.37% -6.88% 8.67% 18.35% -41.87% -0.67% -3.96% -17.25% -0.22% 20.16% 24.95% 43.96% 35.17% 25.49% -4.56% 12.37% 5.96% 2.08% 31.16% 2.36% 13.44% 12.35% 14.98% 11.92% 44.26% 9.49%     
      qoq
    46.33% 10.54% 6.71% 1.85% -0.42% 8.95% -0.55% -5.00% -7.12% 16.00% 6.81% 5.16% -9.86% 16.83% 4.03% -7.96% -3.81% 20.24% 8.13% -11.69% -7.26% 12.86% -9.12% -8.96% -0.17% 12.87% -7.37% -7.52% 4.50% 14.41% -6.63% -3.11% 10.61% 5.84% -12.37% -5.55% 14.04% -9.80% 15.49% 5.45%    -14.27% 9.90% -10.41% 8.94% -14.36% 25.44% 4.85% -14.73% 4.85% -1.90% 6.96% 11.63% 5.95% 6.95% 76.59% -53.46% 23.64% 16.47% -13.26% -20.48% 19.55% 0.35% 4.60% -4.24% 24.31% 15.61% -1.79% -11.09% -5.45% 36.12% -7.40% -14.34% 21.47% 6.24% 2.62% -15.17% 24.31% 3.42% 32.27% -35.61%  
      cost of revenues:
                                                                                        
      total cost of revenues
    283,542,000 197,210,000 185,690,000 177,123,000 156,835,000 157,180,000 152,922,000 151,577,000 145,356,000 162,884,000 148,053,000 145,306,000 109,163,000 125,276,000 114,777,000 111,477,000 113,805,000 115,413,000 95,702,000 94,926,000 92,705,000 104,341,000 104,917,000 109,514,000 110,295,000 117,940,000 115,004,000 118,918,000 124,859,000 99,656,000 117,688,000 120,837,000 110,651,000 102,009,000 97,992,000 108,871,000 115,488,000 99,882,000 110,128,000 94,065,000 87,721,000   76,206,000 84,767,000 87,646,000 88,977,000 90,993,000 102,298,000 93,978,000 94,055,000 103,596,000 89,771,000 92,558,000 90,743,000 75,078,000 71,461,000 82,827,000 54,938,500 79,865,000 77,613,000 66,960,000 72,105,000 80,174,000 72,200,000 68,127,000 70,400,000 68,472,000 57,210,000 46,726,000 51,045,000 50,501,000 59,542,000 55,646,000 30,847,750 45,476,000 40,516,000 37,399,000 37,410,000 37,928,000 38,932,000 34,295,000   
      gross profit
    120,369,000 78,826,000 64,037,000 56,895,000 72,927,000 73,561,000 58,862,000 61,386,000 78,810,000 78,456,000 60,003,000 49,490,000 76,069,000 80,210,000 61,108,000 57,601,000 69,905,000 75,576,000 63,140,000 51,975,000 73,647,000 75,041,000 54,030,000 65,386,000 81,818,000 74,502,000 55,495,000 65,147,000 74,179,000 90,809,000 48,792,000 57,462,000 73,372,000 64,356,000 59,193,000 70,493,000 74,410,000                                                
      yoy
    65.05% 7.16% 8.79% -7.32% -7.46% -6.24% -1.90% 24.04% 3.60% -2.19% -1.81% -14.08% 8.82% 6.13% -3.22% 10.82% -5.08% 0.71% 16.86% -20.51% -9.99% 0.72% -2.64% 0.37% 10.30% -17.96% 13.74% 13.37% 1.10% 41.10% -17.57% -18.49% -1.39%                                                    
      qoq
    52.70% 23.09% 12.55% -21.98% -0.86% 24.97% -4.11% -22.11% 0.45% 30.75% 21.24% -34.94% -5.16% 31.26% 6.09% -17.60% -7.50% 19.70% 21.48% -29.43% -1.86% 38.89% -17.37% -20.08% 9.82% 34.25% -14.82% -12.18% -18.31% 86.11% -15.09% -21.68% 14.01% 8.72% -16.03% -5.26%                                                 
      gross margin %
    29.80% 28.56% 25.64% 24.31% 31.74% 31.88% 27.79% 28.82% 35.16% 32.51% 28.84% 25.41% 41.07% 39.03% 34.74% 34.07% 38.05% 39.57% 39.75% 35.38% 44.27% 41.83% 33.99% 37.38% 42.59% 38.71% 32.55% 35.39% 37.27% 47.68% 29.31% 32.23% 39.87% 38.68% 37.66% 39.30% 39.18% 0% 0% 0% 0% NaN% NaN% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 
      operating expenses:
                                                                                        
      research and development expenses
    1,132,000 1,039,000 1,284,000 1,439,000 2,542,000 1,391,000 1,816,000 1,730,000 1,564,000 2,452,000 1,392,000 2,083,000 1,288,000 1,388,000 1,238,000 1,388,000 1,064,000 950,000 1,175,000 1,128,000 876,000 1,114,000 1,490,000 1,172,000 1,619,000 1,875,000 1,062,000 810,000 900,000 1,118,000 706,000 1,251,000 1,108,000 789,000 716,000 1,050,000 602,000 732,000 1,086,000 595,000 349,000 335,000 414,000 363,000 250,000 232,000 -87,000 838,000 1,608,000 1,000,000 2,160,000 1,436,000 1,464,000 1,048,000 1,673,000 2,346,000 2,575,000 2,207,000 2,969,000 3,863,000 3,614,000 3,267,000 3,351,000 3,863,000 2,487,000 801,000 1,220,000 1,894,000 785,000 696,000 946,000 952,000 1,061,000 704,000 494,000 826,000 890,000 773,000 1,165,000 777,000 714,000 380,000 622,000 351,000 
      selling and marketing expenses
    5,577,000 5,461,000 4,895,000 4,370,000 4,172,000 4,153,000 4,248,000 4,167,000 5,126,000 4,307,000 4,682,000 5,369,000 3,948,000 3,783,000 4,093,000 3,952,000 4,365,000 4,264,000 2,671,000 3,988,000 4,276,000 3,660,000 4,076,000 4,854,000 4,794,000 4,123,000 3,783,000 3,276,000 3,865,000 3,813,000 8,578,000 3,712,000 3,699,000 3,517,000 3,630,000 4,090,000 4,363,000 4,288,000 4,793,000 3,668,000 3,675,000 4,383,000 4,283,000 3,433,000 4,258,000 3,216,000 3,379,000 2,575,000 3,777,000 11,571,000 3,089,000 3,445,000 4,666,000 4,922,000 6,882,000 2,940,000 3,725,000 2,660,000 2,538,000 3,393,000 2,686,000 3,202,000 3,675,000 3,393,000 3,215,000 4,301,000 2,699,000 2,647,000 2,020,000 3,519,000 2,794,000 2,043,000 3,822,000 1,986,000 2,430,000 2,410,000 2,826,000 2,695,000 2,083,000 1,934,000 1,651,000 2,208,000 2,174,000 1,649,000 
      general and administrative expenses
    27,336,000 21,723,000 20,174,000 19,786,000 17,909,000 19,583,000 22,973,000 18,026,000 19,537,000 18,654,000 14,044,000 17,814,000 17,667,000 14,119,000 16,057,000 13,526,000 17,572,000 15,501,000 23,554,000 18,240,000 18,606,000 17,072,000 14,539,000 11,285,000 14,348,000 14,032,000 11,931,000 14,181,000 15,689,000 4,425,000 13,606,000 15,866,000 13,849,000 9,854,000 10,877,000 12,201,000 9,949,000 10,085,000 19,093,000 8,783,000 8,749,000 7,950,000 7,443,000 10,204,000 7,179,000 6,072,000 7,596,000 6,546,000 7,134,000 6,650,000 7,952,000 6,208,000 6,793,000 7,314,000 7,130,000 6,269,000 7,479,000 7,007,000 7,888,000 6,437,000 6,996,000 7,020,000 6,858,000 6,437,000 5,582,000 7,535,000 6,399,000 7,587,000 5,925,000 6,027,000 5,528,000 4,979,000 5,162,000 5,747,000 4,736,000 4,270,000 4,404,000 4,684,000 4,330,000 3,388,000 2,975,000 3,627,000 3,614,000 2,776,000 
      other operating income
    -4,125,000 -4,325,000 -3,125,000 -4,269,000 -3,125,000 -3,125,000 -6,250,000                                                                              
      impairment of long-lived assets
    8,112,000                                                                                    
      write-off of unsuccessful exploration and storage activities
    2,082,000 302,000 377,000 251,000 516,000                                                                                
      operating income
    80,255,000 42,562,000 40,432,000 35,318,000 50,913,000 49,085,000 35,675,000 35,127,000 52,583,000 51,628,000 37,567,000 24,224,000 53,166,000 30,225,000 38,893,000 38,607,000 45,078,000 54,861,000 35,988,000 28,619,000 49,889,000 53,195,000 51,686,000 48,075,000 61,057,000 54,472,000 38,719,000 46,880,000 53,725,000 67,982,000 25,902,000 36,633,000 54,593,000 48,400,000 43,970,000 53,152,000 59,496,000 51,229,000 48,223,000 51,887,000 50,543,000 46,479,000 38,643,000 29,851,000 43,788,000 22,330,000 42,571,000 29,797,000 37,862,000 8,511,000 -221,007,000 14,188,000 25,992,000 25,742,000 17,306,000 24,208,000 19,374,000 3,119,000 -34,533,000 23,101,000 2,307,000 2,205,000 6,936,000 25,961,000 16,751,000 19,125,000 14,781,000 19,126,000 14,281,000 12,419,000 10,340,000 20,992,000 14,465,000 -2,336,000 6,842,000 24,866,000 15,450,000 14,770,000 13,793,000 25,263,000 11,467,000 13,386,000 14,303,000 22,536,000 
      yoy
    57.63% -13.29% 13.33% 0.54% -3.18% -4.93% -5.04% 45.01% -1.10% 70.81% -3.41% -37.25% 17.94% -44.91% 8.07% 34.90% -9.64% 3.13% -30.37% -40.47% -18.29% -2.34% 33.49% 2.55% 13.65% -19.87% 49.48% 27.97% -1.59% 40.46% -41.09% -31.08% -8.24% -5.52% -8.82% 2.44% 17.71% 10.22% 24.79% 73.82% 15.43% 108.15% -9.23% 0.18% 15.65% 162.37% -119.26% 110.02% 45.67% -66.94% -1377.05% -41.39% 34.16% 725.33% -150.11% 4.79% 739.79% 41.45% -597.88% -11.02% -86.23% -88.47% -53.07% 35.74% 17.30% 54.00% 42.95% -8.89% -1.27% -631.64% 51.13% -15.58% -6.38% -115.82% -50.40% -1.57% 34.73% 10.34% -3.57% 12.10%     
      qoq
    88.56% 5.27% 14.48% -30.63% 3.72% 37.59% 1.56% -33.20% 1.85% 37.43% 55.08% -54.44% 75.90% -22.29% 0.74% -14.36% -17.83% 52.44% 25.75% -42.63% -6.21% 2.92% 7.51% -21.26% 12.09% 40.69% -17.41% -12.74% -20.97% 162.46% -29.29% -32.90% 12.80% 10.08% -17.27% -10.66% 16.14% 6.23% -7.06% 2.66% 8.74% 20.28% 29.45% -31.83% 96.09% -47.55% 42.87% -21.30% 344.86% -103.85% -1657.70% -45.41% 0.97% 48.75% -28.51% 24.95% 521.16% -109.03% -249.49% 901.34% 4.63% -68.21% -73.28% 54.98% -12.41% 29.39% -22.72% 33.93% 14.99% 20.11% -50.74% 45.12% -719.22% -134.14% -72.48% 60.94% 4.60% 7.08% -45.40% 120.31% -14.34% -6.41% -36.53%  
      operating margin %
    19.87% 15.42% 16.19% 15.09% 22.16% 21.27% 16.84% 16.49% 23.46% 21.39% 18.06% 12.44% 28.70% 14.71% 22.11% 22.83% 24.54% 28.72% 22.66% 19.48% 29.99% 29.65% 32.52% 27.49% 31.78% 28.31% 22.71% 25.47% 26.99% 35.69% 15.56% 20.55% 29.67% 29.09% 27.97% 29.63% 31.33% 30.76% 26.12% 32.46% 33.34% Infinity% Infinity% 24.83% 31.22% 17.50% 29.89% 22.79% 24.80% 6.99% -190.39% 10.42% 20.02% 19.45% 13.99% 21.84% 18.52% 3.19% -62.34% 19.41% 2.40% 2.67% 7.28% 21.67% 16.71% 19.15% 15.48% 19.18% 17.80% 17.90% 14.63% 26.42% 17.21% -3.78% 10.26% 31.94% 24.11% 24.49% 23.47% 36.46% 20.57% 24.84% 35.10% 35.61% 
      other income:
                                                                                        
      interest income
    1,430,000 1,147,000 1,626,000 1,929,000 1,313,000 1,389,000 2,051,000 2,604,000 1,839,000 2,363,000 2,827,000 4,942,000 1,851,000 1,237,000 1,659,000 179,000 342,000 534,000 519,000 808,000 263,000 248,000 626,000 441,000 402,000 320,000 482,000 420,000 293,000 458,000 214,000 189,000 113,000 127,000 255,000 362,000 244,000 140,000 266,000 245,000 320,000 53,000 44,000 9,000 35,000 90,000 111,000 742,000 87,000 41,000 197,000 280,000 336,000 388,000 138,000 438,000 716,000 135,000 -242,000 157,000 95,000 197,000 54,000 157,000 276,000 152,000 383,000 637,000 1,052,000 1,046,000 2,358,000 1,171,000 1,621,000 1,415,000 1,655,000 1,443,000 2,347,000 1,115,000 1,053,000 1,370,000 1,075,000 810,000 123,750 64,000 
      interest expense
    -44,993,000 -35,019,000 -35,677,000 -36,682,000 -34,473,000 -34,525,000 -34,822,000 -33,716,000 -30,968,000 -25,803,000 -25,054,000 -24,393,000 -23,631,000 -23,841,000 -22,403,000 -20,418,000 -21,081,000 -22,786,000 -22,230,000 -18,626,000 -19,016,000 -19,139,000 -21,756,000 -19,785,000 -17,273,000 -17,568,000 -20,076,000 -21,517,000 -21,223,000 -22,034,000 -18,700,000 -15,846,000 -14,344,000 -12,987,000 -11,692,000 -14,540,000 -14,923,000 -15,828,000 -17,137,000 -18,401,000 -16,023,000 -17,748,000 -18,859,000 -17,828,000 -22,494,000 -22,072,000 -20,518,000 -18,459,000 -17,504,000 -15,863,000 -19,528,000 -15,400,000 -14,263,000 -14,878,000 -15,028,000 -23,909,000 -17,442,000 -13,080,000 -28,410,000 -4,358,000 -9,426,000 -9,714,000 -4,178,000 -4,358,000 -4,415,000              -26,506,000 -9,011,000 -9,502,000 -10,298,000 -7,803,000 -11,737,000 
      derivatives and foreign currency transaction gains
    -1,537,000 -989,000 -891,000 5,068,000 2,060,000 -4,319,000 2,046,000 -332,000 -1,582,000 712,000 -781,000 -1,272,000 -1,937,000 -2,013,000 -293,000 -3,998,000 260,000 1,509,000 -21,000 658,000 -16,866,000 1,691,000 1,047,000 671,000 393,000 -72,000 205,000 19,000 472,000 -2,250,000 -383,000 -529,000 -1,599,000 614,000 -1,001,000 1,703,000 1,338,000 -2,942,000 -222,000 -4,332,000                                             
      income attributable to sale of tax benefits
    16,621,000 18,548,000 14,356,000 16,251,000 17,571,000 20,020,000 19,760,000 15,798,000 17,476,000 18,676,000 14,936,000 14,979,000 12,566,000 7,540,000 9,113,000 9,527,000 7,705,000 7,928,000 7,879,000 7,420,000 6,355,000 8,902,000 7,014,000 5,672,000 4,132,000 4,415,000 4,056,000 4,637,000 7,764,000 4,020,000 4,066,000 3,556,000 7,361,000 3,859,000 3,506,000 4,356,000 6,157,000 4,123,000 3,463,000 4,519,000 4,398,000 8,634,000 4,731,000 5,552,000 5,487,000 6,130,000 6,717,000 5,027,000 5,783,000 3,532,000 2,710,000 2,311,000 2,589,000 2,517,000 3,850,000 2,344,000 3,141,000 2,139,000 -3,674,000 3,869,000 2,070,000 2,139,000                       
      other non-operating income
    -23,145,000 -37,000 124,000 76,000 222,000 66,000 22,000 74,000 26,000 1,272,000 108,000 79,000 60,000 -197,000 673,000 -1,260,000 75,000 174,000 44,000 -21,000 -331,000 75,000 961,000 304,000 78,000 -482,000 244,000 1,027,000 91,000 117,000 309,000 7,373,000    6,000 -92,000 -39,000 -5,546,000 49,000 191,000 -131,000 -1,675,000 283,000 243,000 343,000 63,000 137,000 29,000 1,417,000 246,000 215,000 290,000  206,000 347,000 915,000  -379,000 246,000 79,000 -359,000 -167,000 246,000 550,000 130,000 443,000 -21,000 309,000 40,000 295,000 247,000 -4,000 352,000 322,000 65,000 204,000 103,000 347,000 53,000 72,000 40,000 55,250 76,000 
      income from operations before income tax and equity in earnings of investees
    28,631,000 26,212,000 19,970,000 21,960,000 37,606,000 31,716,000 24,732,000 19,555,000 39,374,000 48,848,000 29,603,000 18,559,000 42,075,000 12,951,000 27,642,000 22,637,000 32,379,000 42,220,000 22,179,000 18,858,000 20,294,000 44,972,000 39,578,000 35,378,000 48,789,000 41,085,000 23,630,000 31,466,000 41,122,000                                                        
      income tax benefit
    15,470,000 6,738,000 4,283,000 5,466,000 3,795,000 11,771,000 1,193,000 3,178,000 147,000 -8,188,000 7,134,000 3,956,000         -3,007,000 -21,728,000 -15,361,000 -11,766,000 -18,148,000 -25,477,000 -9,626,000 3,529,000 -14,039,000 -31,386,000 -1,184,000 -29,105,000 26,942,000   -6,369,000 -10,886,000 -2,450,000 -11,988,000 -7,890,000 -9,509,000 38,211,000         14,745,000 -1,479,000 -4,309,000  -49,261,000 305,000 1,007,000 -586,000   3,365,000 2,557,000       -2,613,000 -2,071,000   -1,992,000 1,995,000           
      equity in earnings of investees
    512,000 99,000 455,000 773,000 -367,000 -862,000 -1,624,000 1,232,000 829,000    271,000 -1,498,000 -589,000 -1,562,000 577,000 -4,420,000 649,000 605,000 542,000 288,000 -1,119,000 1,658,000 -735,000 -1,481,000 1,085,000 1,202,000 1,047,000 6,182,000 -117,000 388,000  -267,000 337,000                                                  
      net income
    44,613,000 33,049,000 24,708,000 28,199,000 41,034,000 42,625,000 24,301,000 23,965,000 40,350,000 38,833,000 36,332,000 24,511,000 33,461,000 20,231,000 19,826,000 14,945,000 22,793,000 22,273,000 20,780,000 15,195,000 17,829,000 23,532,000 23,098,000 25,270,000 29,906,000 14,127,000 15,089,000 36,197,000 28,130,000 21,755,500 10,107,000 2,659,000 74,256,000 69,427,000 22,780,000 38,242,000 39,735,000 31,232,000 14,406,000 24,933,000 30,945,000 73,661,000 15,273,000 10,267,000 16,770,000 9,313,000 21,789,000 13,143,000 25,507,000 -1,897,000 -222,248,000 -515,000 8,722,000 8,025,000 -43,000,000 1,003,000 8,238,000 -8,965,000 -15,199,000 21,947,000 -1,494,000 1,785,000 14,627,000 23,446,000 15,974,000 14,506,000 11,696,000 15,911,000 12,161,000 10,064,000 8,908,000 15,762,000 8,547,000 -5,841,000 4,221,000 13,939,000 8,395,000 7,892,000 -5,143,000 12,318,000 4,094,000 3,908,000 3,260,500 6,763,000 
      yoy
    8.72% -22.47% 1.67% 17.67% 1.70% 9.76% -33.11% -2.23% 20.59% 91.95% 83.25% 64.01% 46.80% -9.17% -4.59% -1.65% 27.84% -5.35% -10.04% -39.87% -40.38% 66.57% 53.08% -30.19% 6.31% -35.06% 49.29% 1261.30% -62.12% -68.66% -55.63% -93.05% 86.88% 122.29% 58.13% 53.38% 28.41% -57.60% -5.68% 142.85% 84.53% 690.95% -29.90% -21.88% -34.25% -590.93% -109.80% -2652.04% 192.44% -123.64% 416.86% -151.35% 5.88% -189.51% 182.91% -95.43% -651.41% -602.24% -203.91% -6.39% -109.35% -87.69% 25.06% 47.36% 31.35% 44.14% 31.30% 0.95% 42.28% -272.30% 111.04% 13.08% 1.81% -174.01% -182.07% 13.16% 105.06% 101.94% -257.74% 82.14%     
      qoq
    34.99% 33.76% -12.38% -31.28% -3.73% 75.40% 1.40% -40.61% 3.91% 6.88% 48.23% -26.75% 65.39% 2.04% 32.66% -34.43% 2.33% 7.18% 36.76% -14.77% -24.24% 1.88% -8.60% -15.50% 111.69% -6.38% -58.31% 28.68% 29.30% 115.25% 280.11% -96.42% 6.96% 204.77% -40.43% -3.76% 27.23% 116.80% -42.22% -19.43% -57.99% 382.30% 48.76% -38.78% 80.07% -57.26% 65.78% -48.47% -1444.60% -99.15% 43054.95% -105.90% 8.69% -118.66% -4387.14% -87.82% -191.89% -41.02% -169.25% -1569.01% -183.70% -87.80% -37.61% 46.78% 10.12% 24.03% -26.49% 30.84% 20.84% 12.98% -43.48% 84.42% -246.33% -238.38% -69.72% 66.04% 6.37% -253.45% -141.75% 200.88% 4.76% 19.86% -51.79%  
      net income margin %
    11.05% 11.97% 9.89% 12.05% 17.86% 18.47% 11.47% 11.25% 18.00% 16.09% 17.46% 12.58% 18.06% 9.85% 11.27% 8.84% 12.41% 11.66% 13.08% 10.34% 10.72% 13.12% 14.53% 14.45% 15.57% 7.34% 8.85% 19.67% 14.13% 11.42% 6.07% 1.49% 40.35% 41.73% 14.49% 21.32% 20.92% 18.76% 7.80% 15.60% 20.41% Infinity% Infinity% 8.54% 11.96% 7.30% 15.30% 10.05% 16.71% -1.56% -191.46% -0.38% 6.72% 6.06% -34.75% 0.90% 7.87% -9.16% -27.44% 18.44% -1.55% 2.16% 15.35% 19.57% 15.94% 14.52% 12.25% 15.95% 15.16% 14.50% 12.61% 19.83% 10.17% -9.46% 6.33% 17.91% 13.10% 13.08% -8.75% 17.78% 7.34% 7.25% 8.00% 10.69% 
      net income attributable to noncontrolling interest
    -545,000 -1,696,000 -571,000 -153,000 -672,000 -1,804,000 -2,219,000 -1,722,000 -1,763,000 -3,107,000 -879,000 -320,000 -4,432,000 -2,190,000 -1,716,000 -3,685,000 -4,363,000 -3,368,000 -5,878,000 -2,169,000 -2,570,000 -2,834,000 -7,419,000 -2,224,000 -3,873,000 -1,521,000 516,000 -2,259,000 -2,184,000 -4,869,000 474,000 -3,002,000 -4,748,000 -3,467,000 -3,599,000 -3,206,000 -4,423,000 -3,002,000 -2,326,000 -584,000 -1,674,000 -1,522,000 -859,000 -235,000 -256,000 -177,000 -237,000 -193,000 -322,000 -85,000 -69,500 -67,000 -81,000 -130,000     59,000 80,000 57,000 53,000 62,000 80,000 77,000 79,000                   
      net income attributable to the company's stockholders
    44,068,000 31,353,000 24,137,000 28,046,000 40,362,000 40,821,000 22,082,000 22,243,000 38,587,000 35,726,000 35,453,000 24,191,000 29,029,000 18,041,000 18,110,000 11,260,000 18,430,000 18,905,000 14,902,000 13,026,000 15,259,000 20,698,000 15,679,000 23,046,000 26,033,000 12,606,000 15,605,000 33,938,000 25,946,000 18,220,000 10,581,000 -343,000 69,508,000 65,960,000 19,181,000 35,036,000 35,312,000 28,230,000 12,080,000 24,349,000 29,271,000 72,139,000 14,414,000 10,032,000 16,514,000 9,136,000 21,552,000 12,950,000 25,185,000                                    
      comprehensive income:
                                                                                        
      other comprehensive income, net of related taxes:
                                                                                        
      change in foreign currency translation adjustments
    1,098,000 1,935,000 -2,578,000 7,547,000 2,761,000 -10,717,000 4,914,000 -266,000 -2,163,000 2,780,000 -1,220,000 393,000 -696,000 5,953,000 -3,824,000 -3,459,000 -1,156,000 -1,194,000 -632,000 416,000 -1,826,000 2,216,000 1,321,000 921,000 -645,000 1,247,000 -2,191,000 482,000 -1,348,000 -264,750 -91,000 -2,496,000 1,528,000 636,000 1,005,000 1,461,000                                                 
      change in unrealized gains or losses in respect of the company's share in derivatives instruments of an unconsolidated investment that qualifies as a cash flow hedge
    64,000 -343,250 -263,000 -214,000 -896,000 -231,000 -1,863,000 429,000 510,000                                                                            
      change in unrealized gains or losses in respect of a cross-currency swap derivative instrument that qualifies as a cash flow hedge
    369,000 2,243,000 -1,881,000                                                                                  
      change in unrealized gains or losses in respect of an interest rate swap derivative instrument that qualifies as a cash flow hedge
    1,478,000 -250,750 -258,000 -233,000 -512,000 -323,500 -2,401,000 41,000 1,066,000                                                                            
      other changes in comprehensive income
    1,000 8,250 10,000 11,000 12,000 9,000 11,000 -28,000 53,000 13,000 12,000 14,000 14,000 14,000 15,000 15,000 15,000 180,000 15,000 17,000 16,000                                                                
      total other comprehensive income, net of related taxes:
    3,010,000 341,000 -4,970,000 8,435,000 -2,101,000 -743,500 -1,988,000 -1,013,000 27,000 -2,023,750 -5,284,000 4,288,000 -7,099,000 -1,052,500 -1,111,000 -3,854,000 755,000                                                                    
      comprehensive income
    47,623,000 23,826,250 19,738,000 36,634,000 38,933,000 21,410,500 22,313,000 22,952,000 40,377,000 43,531,000 31,048,000 28,799,000 26,362,000 28,599,000 18,715,000 11,091,000 23,548,000 29,289,000 18,454,000 14,601,000 16,956,000 33,375,000 21,848,000 25,550,000 24,511,000 16,666,000 11,442,000 34,601,000 25,651,000 22,538,500 11,034,000 697,000 78,423,000 25,894,250 24,405,000 38,792,000 40,302,000 16,612,000 15,741,000 22,944,000 27,763,000 69,336,000 18,725,000 6,964,000 14,733,000 5,189,000 21,753,000 13,103,000 25,465,000 -1,939,000 -222,294,000 -300,000 8,685,000 7,948,000 -42,970,000 839,000 7,999,000 -9,041,000 13,320,000 22,299,000 -1,570,000 1,708,000 14,956,000 23,798,000 16,592,000 14,389,000 10,741,000 16,682,000 11,951,000 9,715,000 8,286,000 15,676,000 8,388,000 -5,890,000 7,509,000 13,940,000 8,176,000 7,920,000 5,363,250 13,990,000 3,239,000 4,224,000   
      comprehensive income attributable to noncontrolling interest
    -135,000 -820,000 -555,000 -1,475,000 -1,250,000 -1,498,000 -3,071,000 -1,620,000 -1,301,000 -3,907,000 -655,000 -569,000 -4,042,000 -3,581,000 -934,000 -2,842,000 -4,064,000 -2,928,000 -5,553,000 -2,301,000 -1,997,000 -3,794,000 -7,751,000 -2,763,000 -3,486,000 -1,866,000 1,051,000 -2,443,000 -1,862,000 -1,772,000 458,000 -2,428,000 -5,118,000 -2,987,500 -4,006,000 -3,613,000 -4,412,000 -1,146,000 -2,326,000 -584,000 -1,674,000 -1,522,000 -859,000  -256,000 -177,000 -237,000 -193,000 -211,000 -85,000 -69,500 -67,000 -81,000 -130,000                               
      comprehensive income attributable to the company's stockholders
    47,488,000 23,006,250 19,183,000 35,159,000 37,683,000 19,912,500 19,242,000 21,332,000 39,076,000 39,624,000 30,393,000 28,230,000 22,320,000 25,018,000 17,781,000 8,249,000 19,484,000 26,361,000 12,901,000 12,300,000 14,959,000 29,581,000 14,097,000 22,787,000 21,025,000 14,800,000 12,493,000 32,158,000 23,789,000 20,766,500 11,492,000 -1,731,000 73,305,000 22,906,750 20,399,000 35,179,000 35,890,000 15,466,000 13,415,000 22,360,000 26,089,000 67,814,000 17,866,000 6,729,000 14,477,000 5,012,000 21,516,000 12,910,000 25,254,000                                    
      earnings per share attributable to the company's stockholders:
                                                                                        
      basic:
    0.72 0.383 0.4 0.46 0.67 0.343 0.37 0.37 0.64 0.59 0.59 0.4 0.51 0.32 0.32 0.2 0.33 0.34 0.27 0.23 0.27                                                                
      diluted:
    0.71 0.378 0.39 0.46 0.66 0.343 0.36 0.37 0.64 0.59 0.59 0.4 0.51 0.32 0.32 0.2 0.33 0.33 0.26 0.23 0.27                                                                
      weighted-average number of shares used in computation of earnings per share attributable to the company's stockholders:
                                                                                        
      basic
    60,960  60,749 60,689 60,559  60,480 60,451 60,386 59,424 60,299 60,245 56,710 56,063 55,999 56,114 56,063 56,004 56,003 55,992 55,988 51,567 51,072 51,043 51,036 50,867 50,933 50,800 50,709  50,645 50,623 50,614  50,367 49,771 49,680  49,599 49,456 49,173 49,023 48,881 47,244 45,690 45,606 45,479 45,438 45,431 45,431 45,431 45,431 45,431 45,431 45,431 45,431 45,431 45,431  45,413 45,431 45,431  45,413 45,369 45,353 44,182 45,337 43,828 42,163 38,762 38,125 38,123 38,109  35,588 35,105 31,563       
      diluted
    61,976  61,252 61,019 60,840  60,770 60,755 60,536 59,762 60,570 60,634 57,104 56,503 56,457 56,498 56,366 56,402 56,298 56,316 56,735 51,937 51,282 51,362 51,526 51,227 51,334 51,094 51,012  50,963 50,958 51,051  50,867 50,624 50,491  50,289 50,137 49,782 51,113 50,600 48,079 46,102 45,963 45,660 45,494 45,448 45,431 45,431 45,431 45,438 45,437 45,431 45,440 45,443 45,431  45,564 45,431 45,457  45,564 45,451 45,405 44,298 45,483 43,978 42,271 38,880 38,251 38,255 38,109  35,609 35,254 31,697       
      change in unrealized gains or losses in respect of a cross currency swap derivative instrument that qualifies as a cash flow hedge
       1,324,000 -3,466,000 -819,250 -2,649,000 -1,189,000 561,000 3,438,000 -4,749,000 2,477,000 -5,403,000 2,392,000 -217,000 -2,095,000 -1,905,000 7,673,000 -2,694,000 198,000 -2,798,000 6,914,000 -3,548,000                                                              
      write-off of long-lived assets
         320,000 323,000 957,000                                                                             
      write-off of unsuccessful exploration activities
         364,000 77,000 1,379,000      1,000 827,000               7,000   123,000     303,000 1,294,000 863,000 557,000 185,000  174,000  8,107,000     720,000  1,151,000 768,000     683,000 2,367,000 3,050,000                        
      write-off of energy storage project assets and unsuccessful exploration activities
             579,500 2,318,000                                                                          
      equity in losses of investees
             465,500 -405,000                         -428,000 -1,599,000 -3,001,000 -2,653,000 -1,144,000 -937,000 -3,133,000 -984,000 -775,000 -899,000  -197,000 -158,000   -385,500 -1,245,000 -157,000 -140,000                               
      change in unrealized gains or losses in respect of the company's share in derivatives instruments of unconsolidated investment that qualifies as a cash flow hedge
             -1,533,000 673,000 1,404,000 -1,014,000 9,000 2,916,000 1,543,000 3,902,000 388,000 983,000                                                                  
      change in unrealized gains or losses on marketable securities available-for-sale
                  -1,000 142,000 -101,000 -31,000 2,000 9,000 -20,000                              4,000 262,000 10,000 -30,000 83,000 -111,000 -186,000 -23,000 66,250 5,000 -18,000 -62,000 329,000 5,000 260,000  484,000  -136,000 -274,000 -541,000 -5,000 -78,000 34,000 20,250 91,000 -128,000        
      write-off of energy storage projects and assets
                 488,500  128,000 1,826,000                                                                    
      equity in losses of investees
               1,996,000                                                                         
      income tax provision
                -8,885,000 -5,880,000 -7,227,000 -6,130,000 -10,163,000 -15,527,000 -2,048,000 -4,268,000              -7,064,500 -11,003,000        -6,056,000 -5,459,000 -6,444,000 -4,967,000 -6,320,000 -5,201,000 -5,780,000 -1,217,000    -5,457,000     -2,558,000 -2,935,000   -4,617,000 -4,340,000 -4,478,000 -3,489,000 -91,000 -3,187,000   475,000 -2,300,000   2,009,000 -4,342,000 -2,156,000 -1,914,000 4,921,000 -6,977,000 -1,154,000 -1,480,000 -1,538,500 -4,197,000 
      business interruption insurance income
                      -248,000    -17,761,000                                                              
      change in unrealized gains or losses in respect of the company's share in derivatives instruments of unconsolidated investment
                       -1,234,000 3,755,000 486,000 947,000 -653,000 -4,755,000 1,282,000 -1,467,000 -2,087,000 -1,145,000 1,043,750 1,012,000 529,000 2,634,000 67,750 618,000 -916,000 569,000 -957,250 1,337,000 -1,987,000 -3,179,000 -4,318,000 3,460,000 -3,296,000                                         
      energy storage and management services
                         2,505,500 5,662,000 2,514,000 1,846,000                                                            
      change in respect of derivative instruments designated for cash flow hedge
                         16,500 36,000 17,000 13,000                                                            
      amortization of unrealized gains in respect of derivative instruments designated for cash flow hedge
                         -4,750 -6,000 -5,000 -8,000 -7,000 -7,000 -9,000 -8,000 -11,000 -14,000 -15,000 -15,000 -14,250 -18,000 -15,000 -24,000 -18,000 -24,000 -24,000 -24,000 -29,000 -31,000 -30,000      -42,000    -47,000 -53,000 -53,000 -53,000 -53,000   -58,000 -58,000 -48,750 -65,000  -65,000 -75,000 -69,000 -74,000 -75,000 -81,000 -81,000 -81,000 -83,000 -67,750 -90,000         
      other
                             2,610,500 3,484,000 2,956,000 4,002,000 2,428,000 1,150,000 1,205,000 2,862,000                                 -6,732,000 -6,903,000 -6,086,000 -6,078,000 -6,324,000 15,108,000 18,061,000 28,692,000 18,089,000 12,462,500 21,446,000 15,319,000 13,085,000       
      loss in respect of derivative instruments designated for cash flow hedge
                             14,500 18,000 18,000 22,000 15,000 20,000 20,000 20,000 15,500 20,000 20,000 22,000 16,250 22,000 22,000 21,000 22,000 23,000 23,000 -933,000                                    -828,000    
      income from continuing operations before income taxes and equity in earnings of investees
                                 22,222,000 11,408,000                                                      
      income from continuing operations
                                 23,089,000 10,107,000 2,659,000 74,256,000 69,427,000 22,780,000 38,242,000 39,735,000 17,571,000 14,406,000 24,933,000 30,945,000    16,770,000 9,313,000 21,789,000 13,143,000 21,390,000      -43,000,000 1,003,000 8,238,000 -8,965,000 -16,734,000 20,696,000 -2,064,000 -1,995,000                       
      income from continuing operations before income taxes and equity in losses of investees
                                   31,376,000  32,676,250 33,446,000 45,039,000 52,220,000 26,101,250 29,047,000 33,967,000                                             
      dividend per share declared
                                   0.1 0.23 0.083 0.08 0.08 0.17 0.113 0.07 0.07 0.31 0.06 0.06 0.08 0.05 0.05  0.04 0.04   0.04 0.04   0.04 0.04 0.05 0.048 0.06 0.05 0.12 0.06 0.06 0.06 0.07 0.05 0.05 0.05                
      other non-operating expense
                                    -20,000 12,000 -1,592,000                   -161,000    -797,000                           
      income from continuing operations before income taxes and equity in earnings (losses) of investees
                                    46,104,000                                                    
      equity in earnings (losses) of investees
                                    1,210,000                                                    
      gross margin
                                         51,039,500 74,489,000 65,796,000 63,873,000 59,332,000 50,783,000 44,025,000 55,475,000 39,957,000 53,459,000 39,756,000 50,381,000 27,732,000 22,027,000 32,541,000 40,066,000 39,794,000 32,991,000 35,763,000 33,153,000 14,993,000 24,520,500 39,161,000 18,653,000 15,694,000 23,187,000 39,654,000 28,035,000 31,762,000 25,099,000 31,254,000 23,011,000 22,661,000 19,608,000 28,966,000 24,510,000 6,101,000 19,716,000 32,372,000 23,570,000 22,922,000 16,942,500 31,362,000 16,807,000 19,601,000 19,868,000 27,312,000 
      foreign currency translation and transaction gains
                                            1,962,000 1,296,000   -2,946,000 -55,000 -638,000 1,258,000 904,000 1,682,000 1,369,000 615,000 -1,756,000 14,000 196,000 -2,659,000 596,000 517,000 2,881,000 25,000 -1,033,000 434,000 -222,000 1,320,000 2,569,000    -1,359,000    41,000    -69,000    39,000    
      and equity in losses of investees
                                            41,391,000                                            
      total revenue
                                             162,852,000 140,487,000                                          
      total cost of revenue
                                             103,520,000 89,704,000                                          
      gain from sale of property, plant and equipment
                                                 7,628,000                                       
      income before income taxes and equity in losses of investees
                                             38,583,000 22,313,000 16,501,000 24,113,000  28,306,000 18,502,000   7,254,750 2,209,000                                 
      revenue:
                                                                                        
      cost of revenue:
                                                                                        
      foreign currency translation and transaction losses
                                              -571,000 -1,366,000                      -2,560,000 -5,151,000 -1,028,000  -183,000 -568,000 -96,000  -716,000 -252,500 -933,000  -8,000 -16,250 -21,000  -83,000   
      comprehensive loss attributable to noncontrolling interest
                                               -235,000               59,000 80,000 57,000 53,000 62,000 80,000 77,000 79,000                   
      earnings per share attributable to the company's stockholders - basic and diluted
                                                                                        
      discontinued operations:
                                                                                        
      income from discontinued operations
                                                    4,480,000          0.015 0.03 0.02 0.08                       
      total income from discontinued operations
                                                    4,117,000                                    
      change in unrealized gains or losses in respect of the company's share in derivative instruments of unconsolidated investment
                                                -1,069,000 -4,088,000                                       
      amortization of unrealized gains or losses in respect of derivative instruments designated for cash flow hedge
                                                -35,000 -36,000   -42,000  -35,000 -47,000 -47,000                                
      earnings per share attributable to the company's stockholders
                                                                                        
      discontinued operations
                                                    0.09                                    
      income before income taxes and equity in income (losses) of investees
                                                 14,394,000   27,161,000                                    
      equity in income (losses) of investees
                                                 -114,000   9,000      -407,000 -71,000 -69,000 -412,000 374,000 591,000                         
      earnings per share attributable to the company's stockholders - basic and diluted:
                                                                                        
      amortization of gains in respect of derivative instruments designated for cash flow hedge
                                                  -36,000                                      
      income from continuing operations:
                                                  0.47                                      
      net income:
                                                  0.47                                      
      impairment charge
                                                      1,816,000 7,264,000                                 
      amortization of gains or losses in respect of derivative instruments designated for cash flow hedge
                                                   -40,000                                     
      change in fair value of marketable securities available-for-sale
                                                                                        
      income, before income taxes and equity in losses of investees
                                                     -680,000   13,188,000 13,622,000                               
      net income attributable to the company’s stockholders
                                                     -1,982,000 -222,384,000 -582,000 8,641,000 7,895,000 -43,080,000 866,000 8,133,000 -8,975,000 -15,345,000 22,027,000 -1,437,000 1,838,000 14,689,000 23,526,000 16,051,000 14,585,000                   
      comprehensive income attributable to the company’s stockholders
                                                     -2,024,000 -222,430,000 -367,000 8,604,000 7,818,000 -43,050,000 702,000 7,894,000 -9,051,000 13,379,000 22,379,000 -1,513,000 1,761,000 15,018,000 23,878,000 16,669,000 14,468,000                   
      earnings per share attributable to the company’s stockholders — basic and diluted
                                                     -0.04 0.088 -0.01 0.19 0.17         0.298 0.52  0.32                   
      weighted-average number of shares used in computation of earnings per share attributable to the company’s stockholders:
                                                                                        
      basic
    60,960  60,749 60,689 60,559  60,480 60,451 60,386 59,424 60,299 60,245 56,710 56,063 55,999 56,114 56,063 56,004 56,003 55,992 55,988 51,567 51,072 51,043 51,036 50,867 50,933 50,800 50,709  50,645 50,623 50,614  50,367 49,771 49,680  49,599 49,456 49,173 49,023 48,881 47,244 45,690 45,606 45,479 45,438 45,431 45,431 45,431 45,431 45,431 45,431 45,431 45,431 45,431 45,431  45,413 45,431 45,431  45,413 45,369 45,353 44,182 45,337 43,828 42,163 38,762 38,125 38,123 38,109  35,588 35,105 31,563       
      diluted
    61,976  61,252 61,019 60,840  60,770 60,755 60,536 59,762 60,570 60,634 57,104 56,503 56,457 56,498 56,366 56,402 56,298 56,316 56,735 51,937 51,282 51,362 51,526 51,227 51,334 51,094 51,012  50,963 50,958 51,051  50,867 50,624 50,491  50,289 50,137 49,782 51,113 50,600 48,079 46,102 45,963 45,660 45,494 45,448 45,431 45,431 45,431 45,438 45,437 45,431 45,440 45,443 45,431  45,564 45,431 45,457  45,564 45,451 45,405 44,298 45,483 43,978 42,271 38,880 38,251 38,255 38,109  35,609 35,254 31,697       
      other comprehensive loss, net of related taxes:
                                                                                        
      gain on acquisition of controlling interest
                                                                                        
      income from continuing operations, before income taxes and equity in income (losses) of investees
                                                          6,668,000 769,000 7,300,000 -7,967,000 14,587,000 23,040,000                         
      income from discontinued operations, net of related tax of 0, 0, 0 and 6, respectively
                                                                                        
      gain on sale of a subsidiary in new zealand, net of related tax of 0, 0, 0 and 2,000, respectively
                                                                                        
      net (income) loss attributable to noncontrolling interest
                                                          -63,000 -137,000                             
      currency translation adjustment
                                                              195,750 412,000  43,000 59,000 412,000 423,000 -52,000                   
      comprehensive (income) loss attributable to noncontrolling interest
                                                          -63,000 -137,000                             
      earnings per share attributable to the company’s stockholders — basic and diluted:
                                                                                        
      gain on sale of a subsidiary in new zealand, net of related tax of 0, (570), 0 and 2,000, respectively
                                                                                        
      net income (income) attributable to noncontrolling interest
                                                            -105,000 -10,000                           
      comprehensive loss (income) attributable to noncontrolling interest
                                                            -105,000 -10,000                           
      income from discontinued operations, net of related tax of 0 and 6 , respectively
                                                                                        
      gain on sale of a subsidiary in new zealand, net of related tax of 2,570
                                                                 3,766,000                       
      income from discontinued operations, net of related tax of 0, 536, 6 and 1,206, respectively
                                                              703,750 1,251,000                         
      gain on sale of a subsidiary in new zealand net of tax of 2,000
                                                                                        
      amortization of unrealized gains in respect of derivative instruments
                                                                                        
      designated for cash flow hedge
                                                              -48,750 -65,000     -65,000                    
      income from continuing operations, before income taxes and equity in income of investees
                                                                -5,908,000                        
      equity in income of investees
                                                                479,000 546,000 640,000 591,000 355,000 550,000 406,000 372,000 408,000 539,000 878,000 1,452,000 1,181,000 1,231,000 507,000 1,429,000 931,000 1,279,000 1,623,000 1,641,000 2,097,000 1,533,000 562,000 213,000 
      income from discontinued operations, net of related tax of 0, 604, 6 and 670, respectively
                                                                                        
      gain on sale of a subsidiary in new zealand, net of related tax of 570, 0, 2,000 and 0, respectively
                                                                570,000                        
      income from continuing operations before income taxes and equity in income of investees
                                                                 -5,098,000                       
      income from discontinued operations, net of related tax of 6 and 60, respectively
                                                                 14,000                       
      income attributable to sale of equity interests
                                                                  3,100,750 3,869,000 4,366,000 4,168,000                   
      income before income taxes and equity in income of investees
                                                                  18,604,000 27,195,000 20,097,000 17,445,000       9,053,000 -9,067,000    8,527,000       
      reclassification of unrealized losses on marketable securities available-for-sale to other income
                                                                      119,750 840,000                 
      earnings per share attributable to the company’s stockholders:
                                                                                        
      basic
                                                                    0.35                    
      diluted
                                                                    0.35                    
      products
                                                                     37,251,000 33,373,000 30,889,000 18,447,000 9,868,000 12,852,000 15,046,000 24,214,000 15,924,000 40,185,000 13,157,000 9,580,000 10,532,000 11,245,000 17,905,000 13,631,000 13,444,000 10,992,750 14,480,000 
      interest expense:
                                                                                        
      parent
                                                                     -443,000 -808,000 -790,000 -914,000 -1,086,000 -1,397,000 -1,397,000 -1,514,000 -1,633,000 -1,591,000 -2,003,000 -2,135,000 -2,226,000       
      liability related to sale of equity interests
                                                                     -1,930,000                   
      less — amount capitalized
                                                                     5,815,000 7,363,000 6,017,000 4,125,000                
      impairment of auction rate securities
                                                                     -280,000 -1,822,000 -2,045,000  -328,000               
      electricity:
                                                                                        
      energy and capacity
                                                                      19,170,500 27,731,000 23,716,000 25,235,000 23,346,000 23,081,000 24,490,000 19,910,000 18,837,000 33,823,000 28,857,000 25,165,000 24,966,000 30,042,000 25,458,000 24,509,000 17,900,000 34,333,000 
      lease portion of energy and capacity
                                                                      27,858,500 40,435,000 37,386,000 33,613,000 31,527,000 37,654,000 30,198,000 23,077,000 27,072,000 21,908,000 19,238,000 17,897,000 17,600,000 20,772,000 16,650,000 15,943,000   
      lease income
                                                                      503,500 671,000 672,000 671,000 672,000 671,000 672,000 671,000 672,000 671,000 672,000 671,000 572,000 571,000     
      total electricity
                                                                      47,532,500 68,837,000 61,774,000 59,519,000 55,545,000 61,406,000 55,360,000 43,658,000 46,581,000 56,402,000 48,767,000 43,733,000 33,557,750 51,385,000 42,108,000 40,452,000 29,754,500 48,803,000 
      lease expense
                                                                      983,000 1,311,000 1,310,000 1,311,000 1,311,000 1,311,000 1,310,000 1,311,000 1,311,000 1,311,000 1,310,000 1,311,000 1,229,000 1,228,000     
      income before income taxes, minority interest and equity in income of investees
                                                                      8,286,000 15,810,000 11,416,000 9,391,000 5,258,000 15,330,000           4,264,000 10,747,000 
      minority interest
                                                                      3,095,000 2,916,000 2,950,000 2,205,000 2,297,000 1,280,000 305,000            
      earnings per share — basic and diluted
                                                                      0.218 0.35 0.28                
      weighted-average number of shares used in computation of earnings per share:
                                                                                        
      basic
    60,960  60,749 60,689 60,559  60,480 60,451 60,386 59,424 60,299 60,245 56,710 56,063 55,999 56,114 56,063 56,004 56,003 55,992 55,988 51,567 51,072 51,043 51,036 50,867 50,933 50,800 50,709  50,645 50,623 50,614  50,367 49,771 49,680  49,599 49,456 49,173 49,023 48,881 47,244 45,690 45,606 45,479 45,438 45,431 45,431 45,431 45,431 45,431 45,431 45,431 45,431 45,431 45,431  45,413 45,431 45,431  45,413 45,369 45,353 44,182 45,337 43,828 42,163 38,762 38,125 38,123 38,109  35,588 35,105 31,563       
      diluted
    61,976  61,252 61,019 60,840  60,770 60,755 60,536 59,762 60,570 60,634 57,104 56,503 56,457 56,498 56,366 56,402 56,298 56,316 56,735 51,937 51,282 51,362 51,526 51,227 51,334 51,094 51,012  50,963 50,958 51,051  50,867 50,624 50,491  50,289 50,137 49,782 51,113 50,600 48,079 46,102 45,963 45,660 45,494 45,448 45,431 45,431 45,431 45,438 45,437 45,431 45,440 45,443 45,431  45,564 45,431 45,457  45,564 45,451 45,405 44,298 45,483 43,978 42,271 38,880 38,251 38,255 38,109  35,609 35,254 31,697       
      less – amount capitalized
                                                                         3,807,000 956,750 1,487,000 874,000 1,466,000 1,429,000 1,674,000 2,039,000        
      earnings per share – basic and diluted
                                                                         0.24 0.12 0.41 0.22 -0.15 0.223 0.39 0.24 0.25       
      products:
                                                                                        
      related party
                                                                              875,750   3,503,000       
      total products
                                                                          15,108,000 18,061,000 28,692,000 18,089,000 13,338,250 21,446,000 15,319,000 16,588,000       
      income before income taxes, minority interest, and equity in income of investees
                                                                              8,953,000 17,094,000 10,191,000  6,165,000 17,654,000 3,151,000 3,855,000   
      minority interest in earnings of subsidiaries
                                                                               -242,000 -571,000      -27,000  
      amortization of unrealized gain in respect of derivative instruments designated for cash flow hedge
                                                                                -91,000        
      gain in respect of derivative instruments designated for cash flow hedge
                                                                                 -90,000 292,000 1,742,000  254,000   
      unrealized gain on marketable securities available-for-sale
                                                                                 118,000   -27,000 62,000   
      unrealized loss on marketable securities available-for-sale
                                                                                  -8,750 -70,000     
      basic and diluted income per share:
                                                                                        
      weighted-average number of shares outstanding
                                                                                   31,563 31,563 31,563  24,374,995 
      lease
                                                                                      9,159,250 14,470,000 
      total cost or revenues
                                                                                      24,926,250 35,971,000 
      foreign currency translation and transaction loss
                                                                                      -147,250 -192,000 
      income before cumulative effect of change in accounting principle
                                                                                      3,260,500 6,763,000 
      cumulative effect of change in accounting principle
                                                                                        
      income from operations
                                                                                      0.138 0.28 
    Balance Sheets:
    Quarterly
    Annual
      Unit: USD2026-03-31 2025-12-31 2025-09-30 2025-06-30 2025-03-31 2024-12-31 2024-09-30 2024-06-30 2024-03-31 2023-12-31 2023-09-30 2023-06-30 2023-03-31 2022-12-31 2022-09-30 2022-06-30 2022-03-31 2021-12-31 2021-09-30 2021-06-30 2021-03-31 2020-12-31 2020-09-30 2020-06-30 2020-03-31 2019-12-31 2019-09-30 2019-06-30 2019-03-31 2018-12-31 2018-09-30 2018-06-30 2018-03-31 2017-12-31 2017-09-30 2017-06-30 2017-03-31 2016-12-31 2016-09-30 2016-06-30 2016-03-31 2015-09-30 2015-06-30 2015-03-31 2014-09-30 2014-06-30 2014-03-31 2013-03-31 2012-12-31 2012-09-30 2012-06-30 2012-03-31 2011-12-31 2011-09-30 2011-06-30 2011-03-31 2010-09-30 2010-06-30 2010-03-31 2009-12-31 2009-09-30 2009-06-30 2009-03-31 2008-12-31 2008-09-30 2008-06-30 2008-03-31 2007-09-30 2007-06-30 2007-03-31 2006-09-30 2006-06-30 2006-03-31 2005-12-31 2005-09-30 2005-06-30 2005-03-31 2004-12-31 2004-09-30 
                                                                                     
        assets
                                                                                     
        current assets:
                                                                                     
        cash and cash equivalents
      654,645,000 147,448,000 79,555,000 88,492,000 112,704,000 94,395,000 88,129,000 66,262,000 201,506,000 195,808,000 78,079,000 275,066,000 414,856,000 95,872,000 154,633,000 263,425,000 130,006,000 239,278,000 267,802,000 250,009,000 376,630,000 448,252,000 197,309,000 173,718,000 231,149,000 71,173,000 97,602,000 110,665,000 79,366,000 98,802,000 71,965,000 66,696,000 54,723,000 47,818,000 77,212,000 118,390,000 174,138,000 230,214,000 90,066,000 192,556,000 148,498,000 171,541,000 137,665,000 70,724,000 42,451,000 80,120,000 47,927,000 57,627,000 66,628,000 37,524,000 66,684,000 84,580,000 99,886,000 59,077,000 44,338,000 40,675,000 49,240,000 54,195,000 43,111,000 46,307,000 20,343,000 46,028,000 42,711,000 34,393,000 38,143,000 137,767,000 30,722,000 20,331,000 24,904,000 22,244,000 19,856,000 24,736,000 19,094,000 26,976,000 48,538,000 47,224,000 44,447,000 36,750,000 29,639,000 
        restricted cash and cash equivalents
      108,297,000 133,418,000 126,182,000 117,572,000 112,001,000 111,377,000 88,646,000 97,480,000 97,455,000 91,962,000 108,188,000 120,316,000 107,466,000 130,804,000 98,402,000 92,956,000 111,127,000 104,166,000 88,498,000 79,868,000 88,449,000 88,526,000 92,233,000 76,116,000 88,627,000 81,937,000 82,435,000 70,974,000 93,098,000 78,693,000 83,101,000 76,041,000 50,332,000 48,825,000 42,559,000 49,510,000 59,879,000 34,262,000 50,525,000 38,005,000 64,129,000 70,523,000 104,870,000 115,530,000   74,406,000                               19,339,000 27,068,000 
        receivables:
                                                                                     
        trade less allowance for credit losses of 474 and 308, respectively
      170,917,000                                                                               
        other
      31,333,000 36,711,000 38,747,000 39,227,000 45,489,000 50,792,000 47,265,000 44,568,000 33,916,000 44,530,000 37,961,000 35,525,000 36,409,000 32,415,000 20,646,000 18,910,000 20,756,000 18,144,000 27,346,000 11,881,000 10,513,000 17,987,000 23,349,000 18,121,000 27,718,000 22,048,000 18,482,000 19,499,000 18,319,000 19,393,000 18,328,000 20,731,000 10,018,000 13,828,000 11,591,000 20,128,000 10,976,000 17,482,000 13,645,000 14,350,000 8,646,000 9,946,000 14,066,000 9,732,000 9,165,000 7,963,000 28,756,000 10,962,000 8,632,000 10,265,000 8,064,000 8,058,000 9,415,000 7,028,000 7,795,000 6,544,000 10,395,000 9,471,000 9,629,000 7,884,000 19,981,000 16,758,000 9,216,000 15,654,000 12,572,000 13,176,000 10,026,000 5,825,000 3,404,000 7,520,000 4,135,000 2,620,000 2,311,000 2,629,000 1,938,000 2,146,000 3,092,000 1,816,000 2,102,000 
        inventories
      45,561,000 45,268,000 44,604,000 44,907,000 42,107,000 38,092,000 47,408,000 44,647,000 53,874,000 45,037,000 44,844,000 37,900,000 45,447,000 22,832,000 29,805,000 32,213,000 32,888,000 28,445,000 27,356,000 28,526,000 38,408,000 35,321,000 34,384,000 38,932,000 34,107,000 34,949,000 39,324,000 38,880,000 42,982,000 45,024,000 37,442,000 36,696,000 20,069,000 19,551,000 18,685,000 18,569,000 17,804,000 12,000,000 12,973,000 16,690,000 16,795,000 16,595,000 16,401,000 17,286,000 17,337,000 18,292,000 22,671,000 18,258,000 20,669,000 17,786,000 18,119,000 17,200,000 12,541,000 17,899,000 14,408,000 14,554,000 14,615,000 15,175,000 20,014,000 15,486,000 14,193,000 14,609,000 12,724,000 13,724,000 12,196,000 13,391,000 13,184,000 10,460,000 9,671,000 8,572,000 5,880,000 5,117,000 6,191,000 5,224,000 5,241,000 9,141,000 6,521,000 6,046,000 10,900,000 
        costs and estimated earnings in excess of billings on uncompleted contracts
      35,671,000 30,011,000 23,127,000 12,926,000 20,940,000 29,243,000 31,345,000 29,719,000 23,616,000 18,367,000 25,766,000 21,786,000 17,136,000 16,405,000 17,354,000 13,823,000 11,522,000 9,692,000 9,324,000 13,837,000 20,876,000 24,544,000 18,123,000 19,477,000 22,305,000 38,365,000 43,125,000 27,352,000 29,762,000 42,130,000 47,811,000 46,573,000 41,134,000 40,945,000 42,087,000 59,901,000 56,550,000 52,198,000 38,025,000 15,259,000 29,897,000 14,459,000 7,093,000 7,426,000 14,784,000 25,918,000 27,789,000 10,135,000 9,613,000 7,704,000 10,051,000 8,618,000 3,966,000 3,518,000 570,000 3,531,000 771,000 12,633,000 3,112,000 14,640,000 23,955,000 14,622,000 12,849,000 6,982,000 4,057,000 1,560,000 2,252,000 2,986,000 8,018,000 14,082,000 8,625,000 2,493,000 1,290,000 8,883,000 5,511,000 3,457,000 5,320,000 3,164,000 1,784,000 
        prepaid expenses and other
      35,801,000 40,141,000 42,434,000 51,508,000 94,023,000 59,173,000 81,624,000 86,991,000 44,311,000 41,595,000 56,073,000 47,328,000 45,474,000 29,571,000 36,858,000 40,883,000 42,208,000 35,920,000 29,320,000 20,220,000 22,613,000 15,354,000 9,696,000 10,948,000 11,456,000 12,667,000 12,116,000 9,225,000 18,224,000 51,441,000 44,452,000 39,836,000 42,274,000 40,269,000 41,727,000 41,151,000 40,482,000 45,867,000 38,940,000 44,334,000 35,135,000 34,011,000 31,055,000 29,566,000 36,879,000 38,156,000 33,728,000 30,151,000 34,144,000 31,497,000 24,467,000 19,863,000 18,672,000 22,972,000 22,481,000 13,791,000 16,329,000 12,118,000 9,914,000 12,080,000 10,286,000 8,451,000 14,303,000 16,222,000 10,508,000 8,721,000 5,737,000 6,793,000 5,768,000 4,795,000 6,768,000 5,397,000 3,509,000 3,256,000 4,096,000 2,141,000 1,756,000 2,377,000 2,881,000 
        total current assets
      1,082,225,000 597,769,000 504,715,000 508,909,000 600,854,000 547,122,000 537,491,000 516,995,000 609,235,000 646,003,000 515,657,000 685,981,000 810,987,000 456,717,000 474,975,000 585,608,000 507,989,000 601,932,000 635,439,000 587,989,000 724,935,000 779,154,000 532,591,000 517,069,000 584,286,000 415,664,000 432,310,000 412,351,000 421,621,000 473,064,000 421,774,000 395,634,000 322,130,000 321,646,000 332,245,000 387,236,000 428,749,000 472,830,000 309,372,000 380,236,000 379,565,000 370,732,000 369,506,000 307,060,000 327,381,000 306,823,000 292,613,000 299,813,000 276,234,000 266,522,000 275,463,000 275,473,000 292,185,000 248,672,000 215,425,000 230,980,000 218,771,000 189,301,000 193,166,000 195,255,000 209,337,000 195,220,000 197,906,000 165,679,000 197,971,000 263,286,000 147,929,000 167,677,000 228,831,000 196,623,000 195,766,000 203,079,000 122,865,000 162,962,000 196,287,000 194,215,000 144,981,000 173,322,000 114,107,000 
        investment in unconsolidated companies
      200,901,000 162,111,000 160,369,000 160,178,000 158,618,000 144,585,000 126,767,000 129,664,000 127,386,000 125,439,000 128,218,000 126,451,000 119,185,000 115,693,000 117,182,000 114,699,000 112,522,000 105,886,000 109,725,000 103,890,000 104,519,000 98,217,000 91,277,000 84,414,000 76,008,000 81,140,000                                                      
        deposits and other
      157,536,000 137,744,000 119,873,000 102,483,000 89,021,000 75,383,000 59,592,000 48,737,000 43,832,000 44,631,000 44,327,000 41,991,000 36,920,000 39,762,000 38,250,000 40,942,000 70,398,000 78,915,000 61,716,000 57,347,000 52,956,000 66,989,000 39,293,000 37,278,000 37,734,000 38,284,000 21,078,000 20,281,000 18,154,000 18,209,000 20,109,000 20,532,000 21,205,000 21,599,000 17,371,000 18,125,000 20,075,000 18,553,000 18,738,000 18,487,000 17,415,000 17,506,000 18,038,000 17,963,000 21,679,000 23,480,000 24,743,000 39,670,000 36,187,000 27,416,000 25,477,000 22,940,000 22,194,000 21,481,000 22,989,000 22,086,000 20,862,000 18,754,000 19,259,000 18,314,000 18,738,000 17,209,000 16,006,000 16,876,000 19,444,000 18,669,000 16,355,000 15,449,000 15,195,000 15,058,000 14,137,000 14,386,000 13,349,000 13,489,000 15,745,000 12,677,000 13,543,000 13,759,000 15,126,000 
        deferred income taxes
      127,557,000 138,903,000 159,667,000 176,897,000 165,983,000 153,936,000 199,010,000 186,194,000 173,627,000 152,570,000 166,212,000 166,477,000 155,966,000 161,365,000 134,585,000 137,961,000 138,709,000 143,450,000 149,178,000 124,284,000 119,217,000 119,299,000 108,145,000 116,758,000 118,682,000 129,510,000 131,820,000 130,461,000 109,821,000 113,760,000 113,363,000 102,162,000 124,304,000 20,135,000 54,495,000 44,113,000 42,283,000 35,382,000 34,961,000 21,907,000 16,502,000 1,344,000 267,000 496,000 2,613,000 2,484,000 684,000 1,238,000 637,000 1,729,000 2,260,000 2,315,000 1,842,000 1,582,000 1,361,000 1,582,000 3,410,000 3,573,000 3,860,000 3,617,000 2,864,000 3,746,000 4,423,000 3,003,000 1,601,000 1,784,000 1,747,000 1,852,000 2,129,000 2,047,000 1,796,000 4,246,000 3,675,000 1,663,000 1,411,000 1,235,000 1,043,000 1,001,000 20,375,000 
        property, plant and equipment
      3,792,223,000 3,672,569,000 3,590,567,000 3,544,564,000 3,497,915,000 3,501,886,000 3,326,187,000 3,328,676,000 3,220,246,000 2,998,949,000 2,883,130,000 2,836,003,000 2,541,677,000 2,493,457,000 2,509,932,000 2,287,498,000 2,293,720,000 2,294,973,000 2,298,903,000 2,175,637,000 2,148,589,000 2,099,046,000 2,036,821,000 2,038,038,000 1,981,086,000 1,971,415,000 1,962,637,000 1,963,086,000 1,962,580,000 1,959,578,000 1,835,939,000 1,840,558,000 1,723,560,000 1,734,691,000 1,621,012,000 1,526,485,000 1,542,687,000 1,556,378,000 1,570,307,000 1,562,315,000 1,570,074,000 1,580,379,000 1,519,945,000 1,535,757,000 1,459,316,000 1,468,012,000 1,463,574,000 1,207,410,000 1,226,758,000 1,491,411,000 1,560,127,000 1,505,543,000 1,518,532,000 1,422,450,000 1,417,931,000 1,426,485,000 1,289,137,000 1,319,358,000 1,320,754,000 998,693,000 971,316,000 972,433,000 975,997,000 958,186,000 825,069,000 820,018,000 789,248,000 737,210,000 742,009,000 648,299,000 613,844,000 594,732,000 541,061,000 491,835,000 449,330,000 455,893,000 457,790,000 466,826,000 467,365,000 
        construction-in-process
      923,262,000 1,048,174,000 1,067,942,000 1,024,241,000 844,873,000 755,589,000 847,048,000 799,868,000 837,205,000 814,967,000 841,536,000 714,850,000 905,505,000 893,198,000 795,891,000 912,376,000 819,560,000 721,483,000 615,482,000 531,634,000 471,548,000 479,315,000 463,073,000 394,123,000 413,789,000 376,555,000 352,013,000 306,810,000 266,083,000 261,690,000 351,288,000 316,447,000 345,563,000 293,542,000 350,872,000 408,939,000 351,636,000 306,709,000 271,853,000 241,199,000 220,981,000 230,561,000 277,990,000 230,037,000 268,349,000 247,901,000 249,777,000 439,301,000 396,141,000 367,762,000 325,206,000 413,998,000 370,551,000 399,002,000 337,969,000 296,930,000 341,507,000 290,307,000 239,505,000 518,595,000 514,205,000 469,069,000 422,536,000 386,501,000 429,660,000 320,249,000 272,904,000 166,973,000 106,369,000 170,339,000 145,064,000 132,443,000 155,778,000 128,256,000 144,568,000 104,085,000 80,308,000 60,177,000 45,721,000 
        operating leases right of use
      48,976,000 41,756,000 35,583,000 35,240,000 32,232,000 32,114,000 30,205,000 26,192,000 27,318,000 24,057,000 23,895,000 23,223,000 22,770,000 23,411,000 20,958,000 19,935,000 19,753,000 19,357,000 19,690,000 19,765,000 15,627,000 16,347,000 16,762,000 17,638,000 17,611,000 17,405,000 58,170,000 58,921,000 60,656,000                                                   
        finance leases right of use
      4,458,000 4,690,000 4,467,000 3,648,000 2,935,000 2,841,000 2,843,000 2,887,000 3,216,000 3,510,000 3,901,000 4,365,000 4,277,000 3,806,000 3,974,000 5,541,000 5,762,000 6,414,000 7,002,000 7,633,000 8,336,000 11,633,000 12,399,000 13,280,000 14,149,000 14,161,000 18,046,000 15,469,000 14,433,000                                                   
        intangible assets
      267,224,000 274,548,000 281,804,000 289,061,000 295,225,000 301,745,000 309,853,000 316,515,000 323,657,000 307,609,000 313,667,000 320,847,000 327,537,000 333,845,000 339,042,000 347,216,000 355,185,000 363,314,000 370,889,000 185,508,000 189,249,000 194,421,000 197,002,000 179,659,000 182,305,000 186,220,000 188,815,000 193,142,000 196,125,000 199,874,000 203,382,000 207,206,000 84,771,000 85,420,000 86,806,000 86,986,000 86,800,000 52,753,000 56,052,000 24,236,000 25,056,000 26,202,000 27,029,000 27,846,000 29,481,000 30,302,000 31,122,000 34,681,000 35,492,000 36,319,000 37,145,000 37,963,000 38,781,000 37,864,000 38,676,000 39,479,000 40,206,000 40,413,000 41,203,000 41,981,000 42,507,000 43,297,000 44,057,000 44,853,000 45,641,000 46,429,000 47,209,000 48,779,000 49,656,000 49,319,000 45,801,000 46,505,000 47,210,000 47,915,000 46,854,000 47,540,000 48,253,000 48,930,000 49,078,000 
        goodwill
      168,076,000 168,244,000 167,871,000 170,391,000 151,291,000 151,023,000 151,345,000 151,074,000 151,122,000 90,544,000 90,269,000 90,456,000 90,446,000 90,325,000 89,742,000 90,200,000 90,591,000 89,954,000 91,342,000 24,863,000 24,237,000 24,566,000 23,584,000 20,120,000 19,963,000 20,140,000 19,933,000 20,225,000 20,123,000 19,950,000 40,111,000 40,133,000 21,253,000 21,037,000 20,667,000 20,121,000 19,710,000 6,650,000 7,071,000                                         
        total assets
      6,772,438,000 6,246,508,000 6,092,858,000 6,015,612,000 5,838,947,000 5,666,224,000 5,590,341,000 5,506,802,000 5,516,844,000 5,208,279,000 5,010,812,000 5,010,644,000 5,015,270,000 4,611,579,000 4,524,531,000 4,541,976,000 4,414,189,000 4,425,678,000 4,359,366,000 3,818,550,000 3,859,213,000 3,888,987,000 3,520,947,000 3,418,377,000 3,445,613,000 3,250,494,000 3,259,493,000 3,193,781,000 3,143,214,000 3,121,350,000 3,059,583,000 2,994,149,000 2,710,817,000 2,586,662,000 2,503,738,000 2,510,633,000 2,499,888,000 2,461,569,000 2,279,271,000 2,273,013,000 2,260,134,000 2,286,333,000 2,276,550,000 2,183,333,000 2,171,913,000 2,144,929,000 2,134,347,000 2,143,568,000 2,094,114,000 2,258,363,000 2,294,100,000 2,327,769,000 2,314,718,000 2,210,721,000 2,110,813,000 2,093,947,000 1,964,709,000 1,940,759,000 1,896,700,000 1,855,001,000 1,831,482,000 1,772,757,000 1,728,194,000 1,637,691,000 1,579,434,000 1,530,495,000 1,338,286,000 1,187,983,000 1,197,603,000 1,138,517,000 1,077,197,000 1,053,304,000 942,953,000 914,480,000 925,116,000 894,624,000 828,395,000 850,088,000 774,023,000 
        liabilities and equity
                                                                                     
        current liabilities:
                                                                                     
        accounts payable and accrued expenses
      190,710,000 234,757,000 190,079,000 212,617,000 201,354,000 234,334,000 217,927,000 183,386,000 197,035,000 214,518,000 227,510,000 174,715,000 172,751,000 149,423,000 159,637,000 144,522,000 164,752,000 143,186,000 127,432,000 108,408,000 148,071,000 152,763,000 144,473,000 149,591,000 140,867,000 141,857,000 137,176,000 115,011,000 108,309,000 116,362,000 105,351,000 103,342,000 103,551,000 153,796,000 103,335,000 101,827,000 95,518,000 91,650,000 102,854,000 87,511,000 82,487,000 85,226,000 98,481,000 83,676,000 78,411,000 79,800,000 93,820,000 78,406,000 98,001,000 96,516,000 106,264,000 98,993,000 105,112,000 99,362,000 76,607,000 76,743,000 86,414,000 90,338,000 87,511,000 73,993,000 77,423,000 79,367,000 100,171,000 103,336,000 115,706,000 87,778,000 97,399,000 65,869,000 77,532,000 79,399,000 60,919,000 44,008,000 58,350,000 50,048,000 61,617,000 49,819,000 51,183,000 37,565,000 38,160,000 
        short term revolving credit lines with banks
       80,000,000 35,000,000 96,500,000      20,000,000 35,000,000             100,057,000 270,500,000 40,550,000  53,100,000 60,900,000 159,000,000 209,500,000 158,600,000 38,500,000 51,500,000 33,900,000 30,000,000 30,000,000    9,000,000   30,600,000  42,600,000                                  
        commercial paper
      99,984,000 99,983,000 99,981,000 99,980,000 99,978,000 99,977,000 99,975,000 99,974,000 99,972,000 99,971,000              3,775,000 8,275,000 50,000,000 50,000,000                                                     
        convertible senior notes
      360,112,000 472,334,000 471,663,000 470,981,000 470,299,000 469,617,000 469,108,000 424,268,000 423,686,000 423,104,000 422,522,000 421,957,000 421,376,000 420,805,000 420,250,000 420,418,000                                                                
        billings in excess of costs and estimated earnings on uncompleted contracts
      5,256,000 13,159,000 32,681,000 37,693,000 52,198,000 23,091,000 10,005,000 16,277,000 21,376,000 18,669,000 10,619,000 18,651,000 24,651,000 8,785,000 14,034,000 12,707,000 10,964,000 9,248,000 15,829,000 13,452,000 12,686,000 11,179,000 7,683,000 5,599,000 5,937,000 2,755,000 6,003,000 14,130,000 15,508,000 18,402,000 21,760,000 16,136,000 10,458,000 20,241,000 6,015,000 17,574,000 17,595,000 31,630,000 37,134,000 42,912,000 30,917,000 22,616,000 49,731,000 57,861,000 45,310,000 28,185,000 3,817,000 21,749,000 25,408,000 32,546,000 25,272,000 32,155,000 33,104,000 35,664,000 18,818,000 15,376,000 4,771,000 11,546,000 7,681,000 3,351,000 5,494,000 14,584,000 30,245,000 15,670,000 21,371,000 15,409,000 12,755,000 8,591,000 7,960,000 9,537,000 7,707,000 9,827,000 5,198,000 12,657,000 12,361,000 10,844,000 6,076,000 6,139,000 5,152,000 
        current portion of long-term debt:
                                                                                     
        limited and non-recourse
      125,211,000 79,885,000 79,313,000 70,570,000 70,453,000 70,262,000 67,979,000 67,921,000 68,211,000 57,207,000 56,752,000 59,938,000 63,465,000 64,044,000 76,668,000 76,976,000 77,190,000 61,695,000                                    13,485,000 14,304,000 14,667,000 14,918,000 15,493,000 16,055,000 19,191,000 20,024,000 18,290,000 11,513,000 6,676,000 6,579,000 6,484,000 7,083,000 8,234,000 8,787,000 8,632,000 8,335,000 8,503,000 8,054,000 2,888,000 9,847,000 9,082,000 9,840,000 8,295,000 21,358,000 
        full recourse
      214,301,000 214,207,000 201,843,000 201,251,000 184,227,000 161,313,000 160,847,000 154,246,000 150,835,000 116,864,000 109,194,000 110,070,000 110,706,000 101,460,000 101,268,000 101,614,000 313,178,000 313,846,000 312,661,000 56,843,000 26,168,000 17,768,000 17,768,000 76,572,000 76,572,000 76,572,000 76,572,000 9,368,000 9,368,000 5,000,000 5,000,000 5,000,000 2,809,000 3,087,000 864,000 10,673,000 10,598,000 12,242,000 12,302,000 11,229,000 11,229,000 17,228,000 17,203,000 17,203,000 24,116,000 23,994,000   28,649,000 20,755,000 20,647,000 20,647,000 20,543,000 18,543,000 14,775,000 14,775,000 13,010,000 12,916,000 12,916,000 12,823,000 2,824,000      1,000,000 1,000,000 1,000,000 1,000,000 1,000,000 1,000,000 1,000,000 1,000,000 1,000,000 1,000,000 1,021,000 24,361,000 20,210,000 
        current portion of financing liability
      9,962,000                                                                               
        operating lease liabilities
      5,357,000 4,764,000 4,310,000 4,464,000 3,657,000 3,633,000 4,178,000 4,041,000 3,914,000 3,329,000 3,229,000 2,703,000 2,381,000 2,347,000 2,291,000 2,242,000 2,490,000 2,564,000 2,902,000 2,978,000 2,935,000 2,922,000 3,026,000 3,016,000 2,974,000 2,743,000 6,253,000 9,906,000 7,532,000                                                   
        finance lease liabilities
      1,807,000 1,884,000 1,881,000 1,696,000 1,451,000 1,375,000 1,330,000 1,267,000 1,291,000 1,313,000 1,365,000 1,678,000 1,552,000 1,581,000 1,860,000 2,013,000 2,378,000 2,782,000  3,139,000 3,171,000 3,169,000 3,148,000 3,151,000 3,169,000 3,068,000 3,191,000 3,555,000 3,147,000                                                   
        total current liabilities
      1,012,700,000 738,388,000 654,837,000 730,676,000 619,223,000 598,078,000 566,334,000 530,732,000 546,254,000 537,012,000 540,034,000 383,209,000 390,960,000 343,910,000 372,028,000 353,113,000 583,991,000 544,156,000 534,272,000 246,229,000 254,234,000 248,647,000 236,303,000 404,646,000 567,319,000 376,476,000 352,723,000 276,594,000 268,090,000 361,944,000 396,365,000 341,031,000 205,211,000 283,345,000 193,456,000 214,177,000 207,491,000 189,251,000 201,905,000 193,145,000 185,045,000 180,737,000 217,366,000 244,854,000 197,043,000 225,994,000 211,828,000 194,209,000 212,134,000 189,170,000 198,320,000 187,654,000 193,770,000 187,676,000 145,126,000 142,551,000 139,696,000 150,876,000 154,588,000 139,603,000 135,542,000 141,787,000 171,749,000 162,383,000 197,963,000 163,196,000 175,687,000 144,921,000 214,941,000 206,751,000 135,437,000 118,610,000 129,436,000 126,346,000 131,360,000 116,079,000 105,304,000 122,981,000 103,134,000 
        long-term debt
                                                                                     
        financing liability
      203,822,000 9,749,000 9,749,000 5,905,000 5,905,000 4,093,000 4,093,000 3,620,000 3,620,000 5,141,000 96,365,000 15,454,000 15,454,000 16,270,000 16,270,000 13,039,000 13,039,000 10,835,000                                                              
        liability associated with sale of tax benefits
      181,384,000 190,168,000 195,364,000 136,778,000 144,081,000 152,292,000 150,542,000 167,188,000 175,586,000 184,612,000 142,562,000 150,212,000 159,305,000 166,259,000 117,113,000 122,894,000 129,381,000 134,953,000 97,714,000 101,883,000 107,105,000 111,476,000 112,950,000 118,072,000 121,627,000 123,468,000 118,811,000 66,999,000 68,852,000 69,893,000 69,071,000 70,574,000 42,622,000 44,634,000 46,803,000 48,810,000 51,122,000 54,662,000 1,043,000 2,064,000 6,714,000 18,580,000 27,298,000 33,685,000 44,757,000 50,829,000 56,090,000 77,216,000 51,126,000 56,528,000 60,247,000 64,383,000 69,269,000 74,448,000 78,519,000 83,894,000 70,965,000 71,765,000  73,246,000                    
        liability for unrecognized tax benefits
      10,360,000 10,378,000 7,125,000 7,583,000 6,481,000 6,272,000 7,860,000 7,520,000 9,255,000 8,673,000 6,638,000 6,684,000 6,581,000 6,559,000 6,572,000 6,244,000 6,034,000 5,730,000 3,677,000 3,464,000 3,094,000 1,970,000 12,643,000 15,309,000 14,560,000 14,643,000 15,053,000 14,478,000 12,482,000 11,769,000 10,139,000 9,637,000 9,074,000 8,890,000 6,188,000 6,015,000 6,312,000 5,738,000 10,260,000 9,974,000 10,639,000 7,112,000 7,151,000 7,190,000 5,606,000 5,589,000 5,132,000 7,795,000 7,280,000 7,139,000 6,712,000 6,409,000 5,875,000 4,245,000 4,380,000 4,294,000 5,648,000 5,365,000 5,184,000 4,931,000 4,079,000 4,077,000 3,657,000 3,425,000 5,817,000 5,817,000 5,578,000 4,308,000 3,642,000 3,558,000          
        liabilities for severance pay
      12,339,000 11,942,000 11,378,000 11,984,000 11,147,000 10,488,000 10,234,000 10,009,000 10,703,000 11,844,000 11,091,000 12,083,000 12,394,000 12,833,000 13,601,000 14,288,000 15,552,000 15,694,000 16,598,000 17,691,000 18,202,000 18,749,000 18,132,000 18,835,000 18,208,000 18,751,000 18,570,000 18,058,000 18,400,000 17,994,000 19,903,000 20,159,000 20,874,000 21,141,000 20,364,000 21,025,000 19,530,000 18,600,000 19,020,000 19,026,000 19,118,000 18,826,000 19,424,000 18,499,000 21,984,000 23,794,000 24,182,000 23,501,000 22,887,000 20,818,000 20,857,000 21,674,000 20,547,000 20,987,000 22,565,000 21,987,000 19,840,000 18,572,000 19,477,000 18,332,000 18,461,000 17,454,000 16,303,000 17,640,000 19,104,000 19,204,000 17,758,000 14,251,000 13,480,000 13,667,000 13,018,000 12,668,000 11,858,000 11,409,000 11,322,000 11,202,000 11,519,000 11,129,000 10,263,000 
        asset retirement obligation
      138,334,000 135,574,000 139,443,000 137,266,000 131,431,000 129,651,000 126,980,000 125,035,000 123,087,000 114,370,000 103,751,000 102,190,000 99,192,000 97,660,000 92,426,000 87,483,000 86,109,000 84,891,000 71,628,000 65,342,000 64,354,000 63,457,000 52,193,000 51,414,000 50,786,000 50,183,000 44,810,000 43,094,000 41,246,000 39,475,000 37,946,000 37,188,000 27,639,000 27,110,000 24,740,000 24,267,000 23,803,000 23,348,000 22,099,000 21,677,000 21,262,000 20,282,000 19,894,000 19,514,000 19,801,000 19,422,000 19,053,000 19,665,000 19,289,000 22,548,000 22,118,000 21,697,000 21,284,000 21,086,000 20,684,000 20,290,000 18,508,000 14,630,000 14,350,000 14,238,000 14,226,000 13,958,000 13,696,000 13,438,000 14,429,000 14,153,000 13,266,000 12,280,000 15,734,000 17,117,000 13,201,000 12,578,000 12,339,000 11,461,000 11,240,000 11,045,000 10,853,000 10,665,000 8,339,000 
        other long-term liabilities
      31,308,000 33,637,000 34,857,000 37,314,000 33,533,000 29,270,000 42,843,000 33,858,000 28,954,000 22,107,000 33,721,000 23,360,000 11,021,000 3,317,000 5,682,000 4,254,000 4,374,000 4,951,000 6,009,000 6,094,000 6,086,000 6,235,000 7,812,000 7,814,000 7,867,000 6,838,000 5,400,000 5,499,000 5,464,000 16,087,000 22,354,000 21,817,000 21,625,000 18,853,000 19,121,000 22,823,000 32,130,000 21,294,000 20,862,000 7,053,000 5,018,000 697,000 697,000 3,872,000 3,633,000 4,830,000 5,282,000 4,917,000 5,148,000 2,857,000 3,789,000 4,021,000 4,253,000 4,242,000 4,473,000 4,704,000 2,267,000 2,115,000 2,297,000 3,358,000                    
        total liabilities
      4,053,890,000 3,555,232,000 3,440,001,000 3,385,839,000 3,243,601,000 3,105,844,000 3,065,502,000 2,999,554,000 3,030,213,000 2,756,693,000 2,595,832,000 2,593,594,000 2,668,880,000 2,581,014,000 2,523,822,000 2,553,686,000 2,389,932,000 2,417,888,000 2,377,468,000 1,848,824,000 1,899,628,000 1,937,720,000 1,940,401,000 1,851,760,000 1,902,560,000 1,725,834,000 1,745,964,000 1,693,320,000 1,671,514,000 1,667,651,000 1,621,365,000 1,567,084,000 1,318,989,000 1,259,787,000 1,239,812,000 1,277,136,000 1,298,192,000 1,286,790,000 1,138,357,000 1,155,578,000 1,161,801,000 1,228,376,000 1,282,737,000 1,364,161,000 1,388,369,000 1,374,329,000 1,368,653,000 1,437,049,000 1,391,916,000 1,335,209,000 1,369,889,000 1,411,732,000 1,408,074,000 1,262,616,000 1,163,096,000 1,153,911,000 1,025,894,000 1,033,680,000 987,336,000 943,306,000 926,522,000 890,632,000 862,227,000 674,018,000 622,529,000 586,489,000 615,043,000 664,881,000 687,997,000 705,689,000 732,403,000 716,252,000 748,712,000 732,157,000 738,458,000 721,027,000 657,115,000 682,110,000 708,681,000 
        commitments and contingencies
                                                                                     
        redeemable noncontrolling interest
      10,088,000 10,402,000 9,904,000 10,985,000 9,573,000 9,448,000 10,856,000 9,985,000 10,112,000 10,599,000 9,952,000 10,008,000 9,361,000 9,590,000 8,433,000 8,996,000 9,408,000 9,329,000 9,542,000 9,871,000 9,706,000 9,830,000 8,743,000 9,806,000 9,402,000 9,250,000 8,741,000 8,820,000 8,705,000 8,603,000 8,522,000 8,268,000 6,943,000 6,416,000  5,898,000                                            
        equity:
                                                                                     
        the company's stockholders' equity:
                                                                                     
        common stock, par value 0.001 per share...
      62,000 61,000 61,000 61,000 61,000 61,000 61,000 61,000 60,000 60,000 60,000 60,000 60,000 56,000 56,000 56,000 56,000 56,000 56,000 56,000 56,000 56,000 51,000 51,000 51,000 51,000 51,000 51,000 51,000 51,000 51,000 51,000 51,000 51,000 51,000 50,000 50,000 50,000 50,000 49,000 49,000 49,000 49,000 49,000 46,000 46,000 46,000 46,000 46,000 46,000 46,000 46,000 46,000 46,000 46,000   46,000 46,000  46,000 46,000 45,000 45,000 45,000 45,000 42,000 38,000 38,000 38,000 35,000 35,000 31,000 31,000 31,000 31,000 31,000 31,000 24,000 
        additional paid-in capital
      1,666,043,000 1,654,635,000 1,649,718,000 1,644,777,000 1,640,910,000 1,635,245,000 1,630,335,000 1,624,763,000 1,619,593,000 1,614,769,000 1,610,577,000 1,609,298,000 1,560,445,000 1,259,072,000 1,256,058,000 1,253,242,000 1,274,838,000 1,271,925,000 1,269,568,000 1,267,451,000 1,264,828,000 1,262,446,000 920,210,000 917,403,000 915,139,000 913,150,000 910,651,000 906,366,000 903,723,000 901,363,000 896,160,000 892,601,000 890,485,000 888,778,000 896,005,000 875,591,000 871,176,000 869,463,000 859,855,000 856,827,000 854,260,000 846,998,000 845,173,000 771,591,000 740,651,000 738,842,000 736,735,000 733,683,000 732,140,000 730,583,000 728,873,000 727,403,000 725,746,000 724,074,000 722,522,000 720,801,000 713,991,000 712,324,000 710,770,000 709,354,000 706,616,000 704,854,000 702,567,000 701,273,000 699,883,000 698,433,000 547,482,000 356,644,000 355,526,000 354,260,000 260,080,000 259,545,000 124,066,000 124,008,000 124,008,000 124,008,000 124,008,000 124,008,000 27,001,000 
        treasury stock
      -42,359,000 -17,964,000 -17,964,000 -17,964,000 -17,964,000 -17,964,000 -17,964,000 -17,964,000 -17,964,000 -17,964,000 -17,964,000 -17,964,000 -17,964,000 -17,964,000 -17,964,000 -17,964,000                                                                
        retained earnings
      945,905,000 909,343,000 885,233,000 868,371,000 847,607,000 814,518,000 780,959,000 766,137,000 751,238,000 719,894,000 691,391,000 663,166,000 646,204,000 623,907,000 612,832,000 601,441,000 596,912,000 585,209,000 573,408,000 565,222,000 558,644,000 550,103,000 534,984,000 524,864,000 507,537,000 487,873,000 480,879,000 470,880,000 442,531,000 422,222,000 410,870,000 405,353,000 410,758,000 351,622,000 289,561,000 274,566,000 243,508,000 216,644,000 191,627,000 183,018,000 162,195,000 128,352,000 59,155,000 47,673,000 36,835,000 22,597,000 15,737,000  -37,735,000 184,649,000 187,048,000 180,226,000 172,331,000 215,411,000 216,362,000 210,046,000 219,122,000 189,627,000 193,333,000 196,950,000 191,210,000 170,409,000 155,875,000 144,465,000 135,037,000 121,393,000 111,503,000 96,713,000 82,851,000 76,211,000 82,256,000 69,741,000 62,769,000 55,824,000 61,914,000 50,549,000 47,402,000 44,441,000 38,445,000 
        accumulated other comprehensive income
      1,288,000  -7,251,000 -2,297,000 -9,410,000  -4,594,000 -1,754,000 -843,000  -5,230,000 -170,000 -4,209,000  -4,477,000 -4,148,000 -1,137,000  -9,647,000 -7,646,000 -6,920,000  -15,503,000 -13,921,000 -13,662,000  -10,848,000 -7,736,000 -5,956,000  -1,386,000 -2,297,000  -4,314,000 -5,634,000 -6,933,000 -7,076,000 -7,732,000 -11,503,000 -12,838,000 -10,849,000 -12,844,000 -8,519,000 -11,971,000 -5,710,000 -3,673,000 451,000 609,000 651,000 697,000 482,000 518,000 595,000 565,000 729,000 968,000 1,101,000 469,000 545,000 622,000 293,000 -59,000 528,000 645,000 1,600,000 829,000 1,039,000 2,010,000 2,096,000 2,255,000 2,359,000 2,358,000 2,577,000 2,549,000 811,000     
        total stockholders' equity attributable to company's stockholders
      2,570,939,000 2,543,943,000 2,509,797,000 2,492,948,000 2,461,204,000 2,425,129,000 2,388,797,000 2,371,243,000 2,352,084,000 2,315,427,000 2,278,834,000 2,254,390,000 2,184,536,000 1,867,571,000 1,846,505,000 1,832,627,000 1,870,669,000 1,854,999,000 1,833,385,000 1,825,083,000 1,816,608,000 1,805,985,000 1,439,742,000 1,428,397,000 1,409,065,000 1,392,420,000 1,380,733,000 1,369,561,000 1,340,349,000 1,319,837,000 1,305,695,000 1,295,708,000    1,143,274,000                                            
        noncontrolling interest
      137,521,000 136,931,000 133,156,000 125,840,000 124,569,000 125,803,000 125,186,000 126,020,000 124,435,000 125,560,000 126,194,000 152,652,000 152,493,000 153,404,000 145,771,000 146,667,000 144,180,000 143,462,000 138,971,000 134,772,000 133,271,000 135,452,000 132,061,000 128,414,000 124,586,000 122,990,000 124,055,000 122,080,000 122,646,000 125,259,000 124,001,000 123,089,000 84,500,000 84,322,000 77,462,000 84,325,000 88,843,000 91,582,000 95,913,000 90,379,000 92,678,000 95,402,000 97,955,000 11,830,000 11,722,000 12,788,000 12,725,000 11,898,000 7,096,000 7,179,000 7,762,000 7,844,000 7,926,000 8,009,000 8,058,000 8,175,000 4,555,000 4,613,000 4,670,000 4,723,000 6,795,000 6,875,000 6,952,000                 
        total equity
      2,708,460,000 2,680,874,000 2,642,953,000 2,618,788,000 2,585,773,000 2,550,932,000 2,513,983,000 2,497,263,000 2,476,519,000 2,440,987,000 2,405,028,000 2,407,042,000 2,337,029,000 2,020,975,000 1,992,276,000 1,979,294,000 2,014,849,000 1,998,461,000 1,972,356,000 1,959,855,000 1,949,879,000 1,941,437,000 1,571,803,000 1,556,811,000 1,533,651,000 1,515,410,000 1,504,788,000 1,491,641,000 1,462,995,000 1,445,096,000 1,429,696,000 1,418,797,000 1,384,885,000 1,320,459,000 1,257,445,000 1,227,599,000 1,196,501,000 1,170,007,000 1,135,942,000 1,117,435,000 1,098,333,000 1,057,957,000 993,813,000 819,172,000 783,544,000 770,600,000 765,694,000 706,519,000 702,198,000 923,154,000 924,211,000 916,037,000 906,644,000 948,105,000 947,717,000 940,036,000 938,815,000 907,079,000 909,364,000 911,695,000 904,960,000 882,125,000 865,967,000                 
        total liabilities, redeemable noncontrolling interest and equity
      6,772,438,000 6,246,508,000 6,092,858,000 6,015,612,000 5,838,947,000 5,666,224,000 5,590,341,000 5,506,802,000 5,516,844,000 5,208,279,000 5,010,812,000 5,010,644,000 5,015,270,000 4,611,579,000 4,524,531,000 4,541,976,000 4,414,189,000 4,425,678,000 4,359,366,000 3,818,550,000 3,859,213,000 3,888,987,000 3,520,947,000 3,418,377,000 3,445,613,000 3,250,494,000 3,259,493,000 3,193,781,000 3,143,214,000 3,121,350,000 3,059,583,000  2,710,817,000 2,586,662,000  2,510,633,000                                            
        trade less allowance for credit losses of 308 and 224, respectively
       164,772,000                                                                              
        accumulated other comprehensive loss
       -2,132,000    -6,731,000            -2,191,000    -6,620,000    -8,654,000       -909,000                                           -861,000 -6,000 -322,000  
        trade less allowance for credit losses of 290 and 224, respectively
        150,066,000                                                                             
        trade less allowance for credit losses of 275 and 224, respectively
         154,277,000                                                                            
        trade less allowance for credit losses of 249 and 163, respectively
          173,590,000                                                                           
        trade less allowance for credit losses of 224 and 90, respectively
           164,050,000                                                                          
        trade less allowance for credit losses of 210 and 90 respectively
            153,074,000                                                                         
        trade less allowance for credit losses of 200 and 90 respectively
             147,328,000                                                                        
        trade less allowance for credit losses of 163 and 90 respectively
              154,557,000                                                                       
        trade less allowance for credit losses of 90 and 90, respectively
               208,704,000 164,746,000 148,060,000 144,199,000 128,818,000 117,277,000 123,398,000 116,555,000                                                               
        accumulated other comprehensive gain
               -1,332,000    2,500,000                                                                  
        marketable securities at fair value
                      42,927,000 43,343,000 45,479,000 45,960,000 27,735,000                                                           
        trade less allowance for credit losses of 90 and 597, respectively
                       122,944,000                                                              
        trade less allowance for credit losses of 253 and 597, respectively
                        140,314,000                                                             
        senior secured notes
                        25,391,000 25,144,000 24,963,000 24,949,000 24,836,000 28,544,000 24,617,000 24,473,000 39,393,000 37,343,000 33,639,000 33,493,000 33,259,000 36,458,000 28,398,000 33,226,000 27,847,000 32,608,000 32,285,000 32,234,000 28,121,000 29,998,000 29,917,000 33,197,000 32,981,000 36,544,000 31,211,000 30,208,000 29,337,000 29,408,000 28,231,000 25,609,000 32,460,000 22,247,000 21,464,000 20,622,000 20,622,000 20,990,000 20,583,000 20,583,000 20,227,000 20,227,000 19,943,000 19,896,000 20,088,000 20,085,000 21,655,000 21,655,000 25,475,000 27,488,000 36,853,000 25,329,000 24,090,000 24,091,000 23,754,000 23,754,000 7,814,000 7,814,000 6,090,000 6,090,000 3,279,000 
        other loans
                        36,203,000 36,265,000 36,240,000 35,897,000 35,369,000 34,341,000 34,408,000 34,458,000 34,135,000 34,181,000 29,687,000 29,687,000 21,495,000 21,495,000 21,495,000 21,495,000 21,495,000 21,495,000 21,495,000 21,495,000 21,494,000 21,495,000 21,495,000 21,495,000 17,995,000 17,995,000 17,995,000 21,207,000 21,127,000 15,494,000 11,453,000 13,744,000 13,677,000 13,612,000 13,547,000                           
        finance liabilities
                        13,854,000                                                             
        trade less allowance for credit losses of 419 and 597, respectively
                         137,688,000                                                            
        full recourse:
                                                    28,994,000 28,760,000                                
        senior unsecured bonds
                         674,643,000 698,271,000 717,534,000 696,868,000 415,751,000 286,505,000 286,453,000 286,401,000 353,554,000 353,626,000 303,575,000 303,528,000 303,527,000 303,469,000 203,752,000 203,715,000 203,678,000 203,649,000 203,577,000 203,483,000 249,632,000 249,665,000 250,058,000 250,136,000 250,212,000 250,366,000 250,443,000 250,520,000 250,827,000 250,904,000 250,982,000 249,888,000 249,964,000 250,042,000 250,119,000 250,189,000 251,425,000 142,003,000                       
        trade less allowance for credit losses of 597 and 597, respectively
                          139,711,000                                                           
        trade less allowance for credit losses of 597 and 0, respectively
                           149,170,000                                                          
        trade less allowance for credit losses of 779 and 0, respectively
                            157,497,000 179,757,000 168,924,000                                                       
        trade
                               154,525,000 139,226,000 135,756,000 139,870,000 137,581,000 118,675,000 109,061,000 103,580,000 110,410,000 98,384,000 79,587,000 68,920,000 80,807,000 65,198,000 59,042,000 76,465,000 52,313,000 58,089,000 56,300,000 75,224,000 78,764,000 55,676,000 42,779,000 55,680,000 80,166,000 42,315,000 43,545,000 51,274,000 53,084,000 72,185,000 70,491,000 59,223,000 47,057,000 49,904,000 53,423,000 55,332,000 53,323,000 57,393,000 49,839,000 68,600,000 52,461,000 48,824,000 53,561,000 52,552,000 33,682,000 42,360,000 36,879,000 35,079,000 33,515,000 35,941,000 35,344,000 29,450,000 26,913,000  
        deferred financing and lease costs
                                957,000 1,988,000 1,733,000 3,242,000 5,878,000 4,926,000 4,922,000 4,674,000 5,426,000 5,186,000 3,465,000 3,923,000 5,188,000 5,131,000 4,430,000 24,718,000 25,836,000 27,369,000 28,969,000 29,429,000 29,127,000 31,748,000 31,371,000 26,821,000 27,188,000 28,054,000 28,482,000 23,238,000 19,609,000 19,774,000 19,093,000 19,433,000 20,175,000 20,940,000 22,116,000 22,911,000 19,969,000 16,127,000 13,034,000 13,195,000 13,620,000 14,292,000 14,792,000 15,430,000 16,331,000 16,862,000 17,764,000 17,412,000 18,059,000 18,557,000    
        deferred lease income
                               1,201,000 43,264,000 44,040,000 47,658,000 48,433,000 49,203,000 49,973,000 50,745,000 51,520,000 52,273,000 53,036,000 53,798,000 54,561,000 55,460,000 56,925,000 57,516,000 58,325,000 59,070,000 59,815,000 61,294,000 62,029,000 62,762,000 65,696,000 66,398,000 67,051,000 67,686,000 68,321,000 68,955,000 69,483,000 70,010,000 70,324,000 71,673,000 72,193,000 72,590,000 72,867,000 73,254,000 73,809,000 74,338,000 74,427,000 74,774,000 74,856,000 75,527,000 76,869,000 77,540,000 78,212,000 79,554,000 80,226,000 80,897,000 81,569,000 70,141,000 70,713,000    
        investment in an unconsolidated company
                                73,714,000 71,047,000 71,885,000 71,983,000 67,739,000 66,551,000 63,109,000 34,084,000 25,367,000 13,957,000 2,806,000                                           
        deferred charges
                                       49,834,000 43,972,000 43,598,000 43,960,000 43,773,000 40,690,000 41,409,000 42,613,000 36,235,000 36,512,000 37,301,000 35,399,000 35,674,000 35,881,000 35,217,000 35,351,000 38,636,000 39,711,000 40,066,000 40,236,000 36,930,000 37,059,000 37,294,000 30,064,000 30,270,000 30,466,000                     
        total liabilities, redeemable nonconrolling interest and equity
                                     2,994,149,000   2,503,738,000                                             
        total equity attributable to the company's stockholders
                                      1,300,385,000                                               
        total equity attributable to company's stockholders
                                       1,236,137,000                                              
        redeemable nonconrolling interest
                                        6,481,000   4,772,000                                          
        investment in an unconsolidated company in excess of accumulated losses
                                                                                     
        reedemable noncontrolling interest
                                          5,195,000  4,972,000                                         
        total liabilities and equity
                                          2,499,888,000 2,461,569,000 2,279,271,000 2,273,013,000 2,260,134,000 2,286,333,000 2,276,550,000 2,183,333,000 2,171,913,000 2,144,929,000 2,134,347,000 2,143,568,000 2,094,114,000 2,258,363,000 2,294,100,000 2,327,769,000 2,314,718,000 2,210,721,000 2,110,813,000 2,093,947,000 1,964,709,000 1,940,759,000 1,896,700,000 1,855,001,000 1,831,482,000 1,772,757,000 1,728,194,000                 
        accumulated losses of unconsolidated company in excess of investment
                                           11,081,000 16,664,000 15,347,000 12,216,000                                       
        related entity
                                                  506,000 442,000 442,000 397,000 373,000 351,000 329,000 307,000 287,000 381,000 355,000 332,000 274,000 518,000 647,000 441,000 478,000 477,000 546,000 338,000 734,000 602,000 602,000 334,000 121,000          2,126,000 
        due from parent
                                                  970,000 607,000 534,000 364,000 311,000 196,000 161,000 123,000 260,000 151,000 122,000 503,000 182,000 1,347,000 709,000 422,000 1,059,000 1,951,000 2,068,000 1,085,000 1,276,000 668,000 1,739,000   1,067,000          
        unconsolidated investments
                                               12,667,000 5,215,000 7,688,000 1,339,000 3,308,000 7,510,000 2,789,000 2,591,000 3,476,000 3,783,000 3,732,000 3,757,000 3,997,000 4,068,000 3,832,000 2,040,000 29,876,000 29,104,000 35,527,000 34,219,000 33,425,000 32,743,000 30,559,000 29,916,000 29,306,000 31,398,000 31,992,000 35,093,000 37,749,000 38,984,000 38,189,000 40,241,000 47,235,000 48,554,000 48,362,000 50,018,000 48,818,000 47,766,000 
        restricted cash, cash equivalents and marketable securities
                                                  127,452,000 54,077,000  124,887,000 76,537,000 76,296,000 97,792,000 75,145,000 75,521,000 61,791,000 28,713,000 54,828,000 64,332,000 33,214,000 52,266,000 40,955,000 60,846,000 35,255,000 41,673,000 24,439,000 48,284,000 33,156,000 33,096,000 56,895,000 74,166,000 49,274,000 45,444,000 36,126,000 39,569,000 36,732,000 38,719,000 34,908,000 21,768,000 3,676,000  
        revolving credit lines with banks
                                                  28,100,000 82,000,000 62,467,000 88,349,000 73,606,000 187,474,000 203,369,000 227,642,000 214,049,000 221,322,000 151,461,000 118,500,000 116,464,000 234,395,000 158,500,000 134,000,000 112,000,000 120,000,000 80,000,000 100,000,000                
        short-term revolving credit lines with banks
                                                    34,733,000                                 
        short-term bank deposit
                                                     3,015,000 3,010,000 3,008,000                              
        the company’s stockholders’ equity:
                                                                                     
        accumulated deficit
                                                     -39,717,000                                
        marketable securities
                                                        5,221,000 15,719,000 18,521,000 21,189,000 23,097,000 24,149,000            8,640,000 48,098,000 52,434,000 60,018,000 83,823,000 9,070,000 43,560,000 54,447,000 57,756,000 29,045,000 89,166,000  
        long-term marketable securities
                                                              1,289,000 1,296,000 1,304,000 652,000 2,057,000 2,053,000 1,873,000 1,994,000 2,848,000 3,142,000 3,234,000             
        authorized; 45,430,886 shares issued and outstanding, respectively
                                                             46,000                        
        due to parent, including current portion of notes payable to parent
                                                                10,198,000 10,018,000 9,834,000 9,650,000 9,732,000 16,616,000 32,652,000 31,870,000 31,975,000 33,739,000 82,809,000 82,854,000 33,386,000 31,181,000 33,080,000 32,003,000 38,721,000 37,520,000 31,094,000 40,531,000  
        authorized; 45,430,886 shares issued and outstanding
                                                              46,000                       
        liability associated with sale of equity interests
                                                                72,454,000  106,641,000 108,616,000 111,089,000                 
        notes payable to parent
                                                                                    193,187,000 
        authorized; 45,430,886 and 45,353,120 shares issued and outstanding, respectively
                                                                 46,000                    
        notes payable to parent, net of current portion
                                                                    9,600,000 9,600,000 9,600,000 9,600,000 19,200,000 91,912,000 41,241,000 50,827,000 123,555,000 123,572,000 133,162,000 140,162,000 155,198,000 155,198,000 164,809,000 171,809,000  
        liabilities and stockholders’ equity
                                                                                     
        minority interest
                                                                     117,245,000 120,340,000 123,306,000 63,177,000 67,697,000 69,095,000           
        stockholders’ equity:
                                                                                     
        total stockholders’ equity
                                                                     846,428,000 836,565,000 820,700,000 660,066,000 455,405,000 440,511,000 432,764,000          
        total liabilities and stockholders’ equity
                                                                     1,637,691,000 1,579,434,000 1,530,495,000 1,338,286,000 1,187,983,000 1,197,603,000 1,138,517,000          
        revenues:
                                                                                     
        electricity:
                                                                                     
        energy and capacity
                                                                        25,235,000 23,081,000 24,490,000 19,910,000          
        lease portion of energy and capacity
                                                                        33,613,000 37,654,000 30,198,000 23,077,000          
        lease income
                                                                        671,000 671,000 672,000 671,000          
        total electricity
                                                                        59,519,000 61,406,000 55,360,000 43,658,000          
        products
                                                                        9,868,000 15,046,000 24,214,000 15,924,000          
        total revenues
                                                                        69,387,000 79,467,000 84,052,000 61,747,000          
        cost of revenues:
                                                                                     
        lease expense
                                                                        1,311,000 1,311,000 1,310,000 1,311,000          
        total cost of revenues
                                                                        46,726,000 50,501,000 59,542,000 55,646,000          
        gross margin
                                                                        22,661,000 28,966,000 24,510,000 6,101,000          
        operating expenses:
                                                                                     
        research and development expenses
                                                                        696,000 952,000 1,061,000 704,000          
        selling and marketing expenses
                                                                        3,519,000 2,043,000 3,822,000 1,986,000          
        general and administrative expenses
                                                                        6,027,000 4,979,000 5,162,000 5,747,000          
        operating income
                                                                        12,419,000 20,992,000 14,465,000 -2,336,000          
        other income:
                                                                                     
        interest income
                                                                        1,046,000 1,171,000 1,621,000 1,415,000          
        interest expense:
                                                                                     
        parent
                                                                        -1,086,000 -1,397,000 -1,514,000 -1,633,000          
        less – amount capitalized
                                                                        3,807,000 1,487,000 874,000 1,466,000          
        foreign currency translation and transaction losses
                                                                        -183,000 -96,000  -716,000          
        impairment of auction rate securities
                                                                        -328,000             
        other non-operating income
                                                                        40,000 247,000 -4,000 352,000          
        income before income taxes, minority interest and equity in income of investees
                                                                        9,391,000 15,330,000            
        income tax benefit
                                                                        -2,071,000  -1,992,000 1,995,000          
        equity in income of investees
                                                                        539,000 1,452,000 1,181,000 1,231,000          
        net income
                                                                        10,064,000 15,762,000 8,547,000 -5,841,000          
        other comprehensive income, net of related taxes:
                                                                                     
        amortization of unrealized gains in respect of derivative instruments designated for cash flow hedge
                                                                        -75,000 -81,000 -81,000 -83,000          
        change in unrealized gains or losses on marketable securities available-for-sale
                                                                        -274,000 -5,000 -78,000 34,000          
        comprehensive income
                                                                        9,715,000 15,676,000 8,388,000 -5,890,000          
        earnings per share – basic and diluted
                                                                        240 410 220 -150          
        weighted-average number of shares used in computation of earnings per share:
                                                                                     
        basic
                                                                        42,163,000 38,125,000 38,123,000 38,109,000          
        diluted
                                                                        42,271,000 38,251,000 38,255,000 38,109,000          
        contingencies
                                                                                     
        products:
                                                                                     
        related party
                                                                                     
        total products
                                                                         18,061,000 28,692,000 18,089,000          
        income tax provision
                                                                         -2,300,000            
        foreign currency translation and transaction gains
                                                                          41,000           
        income before income taxes and equity in income of investees
                                                                          9,053,000 -9,067,000          
        other comprehensive loss, net of related taxes:
                                                                                     
        related entities
                                                                           906,000 884,000 1,642,000 3,077,000 524,000 445,000 863,000 2,539,000 2,413,000  
        minority interest in net assets of a subsidiary
                                                                           64,000          
        current assets
                                                                                     
        liabilities and stockholders' equity
                                                                                     
        short-term bank credit
                                                                               3,996,000      
        other liabilities
                                                                               1,309,000 1,349,000 1,349,000 1,369,000 1,389,000 1,409,000 
        minority interest in net assets of subsidiaries
                                                                            64,000 5,373,000 4,798,000 64,000 64,000 64,000 64,000 64,000 68,000 
        stockholders' equity:
                                                                                     
        unearned stock-based compensation
                                                                               -153,000 -170,000 -194,000 -219,000 -244,000 -196,000 
        total stockholders' equity
                                                                            344,730,000 331,679,000 189,443,000 182,259,000 186,594,000 173,533,000 171,216,000 167,914,000 65,274,000 
        total liabilities and stockholders' equity
                                                                            1,077,197,000 1,053,304,000 942,953,000 914,480,000 925,116,000  828,395,000 850,088,000  
        total liabilities and stockholder's equity
                                                                                 894,624,000   774,023,000 
        deferred financing costs
                                                                                  17,240,000 15,873,000 15,510,000 
        divisional deficit
                                                                                     
        trade, net of allowance of 0 and 627 in 2004 and 2003, respectively
                                                                                    37,607,000 
        restricted cash equivalents
                                                                                    19,350,000 
        liabilities and stockholder's equity
                                                                                     
        due to parent
                                                                                    14,975,000 
        capital surplus
                                                                                     
      Cashflow Statements:
      Quarterly
      Annual
        Unit: USD2026-03-31 2025-12-31 2025-09-30 2025-06-30 2025-03-31 2024-12-31 2024-09-30 2024-06-30 2024-03-31 2023-12-31 2023-09-30 2023-06-30 2023-03-31 2022-12-31 2022-09-30 2022-06-30 2022-03-31 2021-12-31 2021-09-30 2021-06-30 2021-03-31 2020-12-31 2020-09-30 2020-06-30 2020-03-31 2019-12-31 2019-09-30 2019-06-30 2019-03-31 2018-12-31 2018-09-30 2018-06-30 2018-03-31 2017-12-31 2017-09-30 2017-06-30 2017-03-31 2016-12-31 2016-09-30 2016-06-30 2016-03-31 2015-09-30 2015-06-30 2015-03-31 2014-09-30 2014-06-30 2014-03-31 2013-09-30 2013-06-30 2013-03-31 2012-12-31 2012-09-30 2012-06-30 2012-03-31 2011-12-31 2011-09-30 2011-06-30 2011-03-31 2010-09-30 2010-06-30 2010-03-31 2009-12-31 2009-09-30 2009-06-30 2009-03-31 2008-12-31 2008-09-30 2008-06-30 2008-03-31 2007-12-31 2007-09-30 2007-06-30 2007-03-31 2006-12-31 2006-09-30 2006-06-30 2006-03-31 2005-12-31 2005-09-30 2005-06-30 2005-03-31 2004-12-31 
                                                                                          
          cash flows from operating activities:
                                                                                          
          net income
        44,613,000 33,049,000 24,708,000 28,199,000 41,034,000 42,625,000 24,301,000 23,965,000 40,350,000 38,833,000 36,332,000 24,511,000 33,461,000 20,231,000 19,826,000 14,945,000 22,793,000 22,273,000 20,780,000 15,195,000 17,829,000 23,532,000 23,098,000 25,270,000 29,906,000 14,127,000 15,089,000 36,197,000 28,130,000 23,089,000 10,107,000 2,659,000 74,256,000 69,427,000 22,780,000 38,242,000 39,735,000 31,232,000 14,406,000 24,933,000 30,945,000 73,661,000 15,273,000 10,267,000 16,770,000 9,313,000 21,789,000 13,143,000 22,430,000 -1,897,000 -222,248,000 -515,000 8,722,000 8,025,000 -43,000,000 1,003,000 8,238,000 -8,965,000 32,401,000 -1,494,000 1,785,000 14,627,000 23,446,000 15,974,000 14,506,000 11,696,000 15,911,000 12,161,000 10,064,000 8,908,000 15,762,000 8,547,000 -5,841,000 4,221,000 13,939,000 8,395,000 7,892,000 -5,143,000 12,318,000 4,094,000 3,908,000 4,749,000 
          adjustments to reconcile net income to net cash from operating activities:
                                                                                          
          depreciation and amortization
        76,364,000 77,335,000 74,981,000 70,031,000 69,777,000 70,050,000 66,661,000 63,801,000 62,351,000 59,892,000 57,488,000 54,256,000 53,161,000 51,334,000 50,453,000 48,897,000 48,108,000 48,605,000 48,828,000 43,439,000 42,100,000 40,940,000 40,813,000 37,907,000 36,952,000 37,433,000 37,997,000 36,430,000 36,901,000 33,862,000 34,791,000 33,027,000 30,553,000 34,136,000 26,928,000 27,023,000 27,059,000 28,412,000 26,307,000 25,077,000 26,181,000 27,904,000 26,920,000 25,639,000 26,017,000 25,402,000 23,417,000 25,027,000 22,747,000 23,137,000 26,528,000 26,055,000 25,013,000 24,744,000 25,137,000 23,256,000 24,635,000 23,370,000 24,132,000 19,880,000 20,449,000 15,582,000 17,601,000 15,061,000 16,132,000 15,810,000 16,478,000 13,906,000 13,934,000 13,178,000 12,766,000 12,526,000 12,012,000 11,558,000 11,118,000 10,562,000 10,201,000 8,621,000 9,121,000 8,764,000 9,500,000 11,224,000 
          accretion of asset retirement obligation
        2,231,000 1,951,000 2,178,000 2,102,000 2,099,000 1,908,000 1,944,000 1,985,000 1,910,000 1,520,000 1,561,000 1,551,000 1,532,000 1,337,000 1,329,000 1,361,000 1,230,000 1,034,000 1,032,000 956,000 955,000 913,000 774,000 773,000 772,000 694,000 692,000 672,000 651,000 648,000 758,000 539,000 529,000 482,000 473,000 464,000 455,000 535,000 422,000 415,000 406,000 388,000 380,000 372,000 379,000 369,000 374,000 389,000 382,000 376,000 437,000 430,000 421,000 413,000 410,000 402,000 394,000 387,000 332,000 280,000 276,000 272,000 268,000 262,000 258,000 284,000 276,000 257,000 252,000 241,000 235,000 344,000 285,000    223,000 199,000     
          stock-based compensation
        4,724,000 4,916,000 4,941,000 4,622,000 4,911,000 5,310,000 5,042,000 5,076,000 4,769,000 4,243,000 3,934,000 4,311,000 2,990,000 3,017,000 2,816,000 2,999,000 2,814,000 2,328,000 2,120,000 2,623,000 2,097,000 2,770,000 2,807,000 2,264,000 1,989,000 2,127,000 2,228,000 2,643,000 2,360,000 2,836,000 3,559,000 2,116,000 1,707,000 1,556,000 1,861,000 3,630,000 1,713,000 1,774,000 1,724,000 817,000 842,000 921,000 1,029,000 1,127,000 1,502,000 1,366,000 1,440,000 1,691,000 1,314,000 1,543,000 1,557,000 1,710,000 1,470,000 1,657,000 1,672,000 1,552,000 1,721,000 1,727,000 1,667,000 1,554,000 1,416,000 1,502,000 1,525,000 1,466,000 1,262,000 1,251,000 1,119,000 1,015,000 1,059,000 1,159,000             
          income attributable to sale of tax benefits, net of interest expense
        -9,250,000 -5,640,000 -7,181,000 -6,768,000 -6,663,000 2,220,000 -7,846,000 -7,892,000 -8,627,000 434,000 -7,464,000 -8,787,000 -7,645,000 3,526,000 -5,627,000 -6,449,000 -4,603,000 1,294,000 -4,087,000 -5,163,000 -4,245,000 -1,244,000 -5,308,000 -3,451,000 -2,087,000 -2,346,000 -1,649,000 -1,775,000 -4,314,000 1,197,000 -1,503,000 -2,008,000 -6,295,000 -3,105,000 -2,007,000 -2,509,000 -4,335,000 -1,042,000 -844,000 -1,601,000 -3,475,000 -6,348,000 -2,676,000 -4,044,000 -2,590,000 -3,068,000 -4,472,000 -2,043,000 -3,445,000 -1,133,000 -1,228,000 -875,000 -1,031,000 -869,000 -2,072,000 -523,000 -1,178,000 -542,000 -800,000 -689,000 -792,000                      
          equity in losses of investees
        -512,000    367,000     1,827,000 405,000   1,498,000 589,000      -542,000 -288,000 1,119,000 -1,658,000 735,000 1,481,000 -1,085,000 -1,202,000 -1,047,000     267,000 -337,000 427,000 1,600,000 3,000,000 2,654,000 1,144,000 937,000 3,134,000 984,000 775,000   197,000     145,000 157,000 140,000                             
          mark-to-market of derivative instruments
        186,000 1,756,000 1,198,000 -3,343,000 939,000 -14,000 -409,000 466,000 813,000 -2,490,000 -307,000 -402,000 993,000 -1,064,000 -1,234,000 3,634,000 277,000 -355,000 -990,000 2,086,000 420,000 431,000 -1,482,000 -561,000 507,000 -330,000 -370,000 -1,209,000 830,000 -297,000 537,000 962,000 -709,000 1,698,000 -943,000 -1,519,000 700,000 -219,000 -162,000 -234,000 11,000 4,129,000 -4,165,000 -526,000 224,000 1,117,000 -3,390,000 5,760,000                                 
          disposal of property, plant and equipment
        -7,000  15,000 -11,000 -321,000  25,000 350,000 -312,000  12,000 146,000 -123,000  -86,000 111,000 -109,000                                                                  
          write-off of unsuccessful exploration and storage activities
        2,082,000  377,000 251,000 516,000                                                                              
          write-off of long-lived assets
        8,112,000      323,000                                                                            
          loss on severance pay fund asset
        -111,000    26,000 -370,000   -371,000 229,000 412,000 -116,000 68,000 -27,000 817,000 161,000  -814,000 -253,000 358,000 -869,000 -62,000 -497,000 535,000 -154,000 -315,000 -217,000 -330,000               140,000      -372,000    -641,000     -1,614,000                        
          changes in fair value of equity investments without a readily determinable fair value
        -1,714,000                                                                                  
          bargain purchase gain
        -9,618,000                                                                                  
          induced conversion expense
        33,652,000                                                                                  
          loss on foreign currency exchange rates
        345,000   -5,913,000 -2,416,000  -1,181,000 222,000 741,000                                                                          
          deferred income tax provision
        -20,423,000 -11,138,000 -6,998,000 -5,637,000 -9,401,000 35,901,000 -12,335,000 -8,583,000 -9,683,000 20,409,000 -12,493,000 -14,434,000 501,000 -21,248,000 685,000 -1,221,000 2,805,000 5,879,000 -4,466,000 -4,445,000 -83,000 -20,420,000 5,791,000 4,608,000 15,123,000 20,719,000 5,643,000 -8,935,000 10,469,000     -80,610,000 8,131,000 1,763,000 6,612,000 -2,269,000 7,488,000 6,611,000 6,643,000 -41,637,000 2,970,000 4,054,000 4,184,000 2,991,000 5,896,000 4,601,000 8,966,000 668,000 -17,221,000 638,000 796,000 4,460,000 39,866,000   145,000 11,082,000 -4,509,000 -856,000 -6,124,000 3,461,000 3,579,000 3,041,000 2,652,000 2,259,000 964,000 970,000    -3,176,000 -4,266,000   1,846,000 -5,303,000 3,342,000 -193,000 -28,000 -2,031,000 
          liability for unrecognized tax benefits
        -18,000 3,253,000 -458,000 1,102,000 209,000 -1,588,000 340,000 -1,735,000 582,000 2,035,000 -46,000 103,000 22,000 -13,000 328,000 210,000 304,000 2,053,000 213,000 370,000 1,124,000 -10,673,000 -2,666,000 749,000 -83,000 -410,000 575,000 1,996,000 713,000 1,630,000 502,000 563,000 184,000 2,702,000 173,000 -297,000 574,000 -4,522,000 286,000 -665,000 254,000 -39,000 -39,000 -321,000 17,000 457,000 182,000 524,000 559,000 515,000 141,000 427,000 303,000 534,000 1,630,000 -135,000 86,000 -1,137,000 283,000 181,000 253,000 505,000 349,000 420,000 232,000 -675,000 239,000 248,000 1,022,000 386,000 84,000 84,000          
          gain from sale of a power plant
        -24,756,000                                                                                  
          changes in operating assets and liabilities, net of businesses acquired:
                                                                                          
          receivables
        -3,859,000 -14,671,000 3,274,000 30,510,000 -14,645,000 -15,355,000 -10,620,000 -4,046,000 57,193,000 -48,835,000 -19,202,000 -2,977,000 -26,626,000 -23,546,000 4,263,000 -5,773,000 5,127,000 26,511,000 -9,699,000 1,070,000 8,856,000 9,273,000 19,078,000 177,000 -25,008,000 -15,073,000 -2,260,000 3,319,000 -1,119,000 -20,224,000 -12,681,000 -6,800,000 9,777,000 -13,232,000 -10,183,000 -19,717,000 19,092,000 -19,569,000 -3,505,000 11,719,000 -21,925,000 9,896,000 -6,574,000 -6,201,000 1,665,000 -23,159,000 43,118,000 -5,433,000 -28,319,000 10,571,000 26,119,000 -40,052,000 1,224,000 9,086,000 -577,000 19,868,000 -2,945,000 -14,367,000 -9,851,000 3,005,000 1,155,000 14,028,000 -3,424,000 -4,972,000 -1,711,000 19,318,000 -15,535,000 -6,787,000 -3,323,000 3,859,000 -3,430,000 -14,754,000 538,000 4,755,000 -5,180,000 -1,725,000 -352,000 1,735,000 -389,000 -5,628,000 -3,133,000 10,980,000 
          costs and estimated earnings in excess of billings on uncompleted contracts
        -6,418,000 -6,833,000 -10,171,000 8,342,000 8,452,000 1,364,000 -1,626,000 -6,103,000 -5,249,000 7,399,000 -3,980,000 -4,650,000 -731,000 949,000 -3,531,000 -2,301,000 -1,830,000 -368,000 4,513,000 7,039,000 3,668,000 -6,421,000 1,354,000 2,828,000 16,060,000 4,760,000 -15,773,000 2,410,000 12,368,000 5,681,000 -1,238,000 -5,439,000 -189,000 1,142,000 17,814,000 -3,351,000 -4,352,000 -14,173,000 -22,766,000 14,638,000 -4,777,000 -7,366,000 333,000 20,367,000 11,134,000 1,871,000 -6,572,000 -19,878,000 -6,188,000 -522,000 -1,909,000 2,347,000 -1,433,000 -4,652,000 -448,000 -2,948,000 2,961,000 2,615,000 11,862,000 -9,521,000 11,528,000 9,315,000 -9,333,000 -1,773,000 -5,867,000 -2,925,000 -2,497,000 692,000 1,356,000  5,032,000 6,064,000 -2,866,000 -2,591,000 -6,132,000 -1,203,000 7,593,000 -3,372,000 -2,054,000 1,863,000 -2,156,000 -1,380,000 
          long-term costs and estimated earnings in excess of billings on uncompleted contracts
        -4,659,000 -8,867,000 -10,667,000 -14,274,000 -15,122,000 -13,781,000 -6,882,000                                                                            
          inventories
        1,112,000 -664,000 303,000 -2,800,000 -4,015,000 9,316,000 -2,761,000 9,227,000 -8,837,000 -193,000 -6,944,000 7,547,000 -22,615,000 6,973,000 2,408,000 675,000 -4,443,000 5,941,000 -8,609,000 9,882,000 -3,087,000 -387,000 4,548,000 -4,825,000 842,000 1,720,000 -444,000 2,206,000 2,018,000 -7,590,000 -747,000 -478,000 -503,000 -861,000 -106,000 5,697,000 -5,800,000 958,000 3,955,000 105,000 1,279,000 -194,000 885,000 -356,000 955,000 4,379,000 -382,000 -2,490,000 352,000 2,411,000 -2,883,000 333,000 -919,000 -4,659,000 5,358,000 -3,491,000 146,000 -2,016,000 560,000 4,839,000 -4,528,000 -1,293,000 416,000 -1,885,000 1,000,000 -1,528,000 1,195,000 -207,000 -2,872,000 148,000 -789,000 -1,099,000 -1,169,000 -1,523,000 -763,000 1,074,000 -967,000 17,000 3,900,000 -2,620,000 -475,000  
          prepaid expenses and other
        7,514,000 2,356,000 -2,066,000 5,102,000 -4,571,000 2,203,000 3,291,000 -10,294,000 -3,710,000 8,454,000 -7,431,000 11,632,000 -15,903,000 7,287,000 4,025,000 755,000 -7,179,000 -5,139,000 -9,100,000 2,393,000 -7,259,000 -5,658,000 1,252,000 508,000 1,211,000 -551,000 -2,891,000 8,999,000 -2,105,000 -6,989,000 -4,616,000 2,438,000 -2,005,000 844,000 -2,456,000 -5,053,000 6,873,000 -7,176,000 5,643,000 -9,199,000 -1,808,000 -2,733,000 -1,489,000 1,189,000 3,575,000 -4,664,000 -4,074,000 -2,002,000 -4,029,000 -144,000 -2,647,000 -7,030,000 -4,604,000 -1,191,000 4,300,000 -491,000 -8,690,000 1,138,000 -3,957,000 -2,204,000 2,166,000 -1,797,000 -1,828,000 5,853,000 1,918,000 -5,714,000 -1,787,000 -2,984,000 1,322,000 -266,000 -1,025,000 -973,000 116,000 1,857,000 -1,371,000 -1,888,000 -171,000 840,000 -1,955,000 -385,000 621,000 540,000 
          change in operating lease right of use asset
        1,389,000 1,352,000 1,337,000 1,239,000 1,165,000 1,418,000 1,038,000 977,000 935,000 887,000 1,434,000 720,000 720,000 598,000 533,000 894,000 692,000 688,000 900,000 764,000 658,000 1,130,000 830,000 1,081,000 784,000                                                          
          deposits and other
        637,000 3,232,000 -3,929,000 4,182,000 2,274,000 -973,000 -3,805,000 25,000 262,000 128,000 -2,872,000 -5,134,000 -22,000 1,209,000 -221,000 744,000 839,000 -686,000 -3,149,000 -411,000 92,000 384,000 -2,325,000 705,000 343,000 -19,903,000 -338,000 -2,310,000 26,000 8,000 4,000 -56,000 62,000 -3,801,000 579,000 1,209,000 -557,000 -142,000 -714,000 -233,000 80,000 68,000 -283,000 -79,000 193,000 1,315,000 -1,229,000 7,136,000 141,000 -2,981,000 -7,390,000 -1,796,000 -3,391,000 -169,000 -239,000 14,000 -353,000 -132,000 -44,000 -26,000 -183,000 -34,000 6,000 101,000 -122,000 722,000 -768,000 -357,000 179,000 387,000 314,000 -939,000 540,000 -253,000 19,000 -180,000 230,000 54,000 21,000 -186,000 -224,000 -261,000 
          accounts payable and accrued expenses
        -13,610,000 32,952,000 -16,573,000 -6,340,000 -11,821,000 4,404,000 49,787,000 -26,432,000 -16,333,000 35,816,000 7,754,000 2,794,000 22,226,000 -956,000 14,039,000 -28,210,000 13,082,000 8,384,000 7,394,000 -41,508,000 3,794,000 -7,990,000 -7,392,000 9,659,000 350,000 -5,499,000 20,433,000 -1,925,000 -4,271,000 -6,668,000 4,127,000 -5,156,000 -49,027,000 55,296,000 981,000 -5,317,000 681,000 -11,838,000 8,655,000 6,654,000 -4,846,000 -19,304,000 2,303,000 -4,903,000 226,000 -3,369,000 -7,725,000 -12,622,000 5,938,000 -14,765,000 1,891,000 -5,378,000 10,024,000 4,877,000 16,238,000 -1,023,000 -5,385,000 -3,184,000 -3,805,000 -5,939,000 15,315,000 -2,436,000 1,317,000 -2,062,000 1,100,000 -6,907,000 18,490,000 -3,642,000 5,580,000 -2,501,000 -6,880,000 -6,612,000 3,781,000 7,778,000 9,998,000 -12,433,000 6,751,000 -8,481,000 898,000 -481,000 15,235,000 -3,903,000 
          billings in excess of costs and estimated earnings on uncompleted contracts
        -8,096,000 -19,518,000 -4,395,000 -16,293,000 28,884,000 13,994,000 -6,272,000 -5,099,000 2,707,000 8,050,000 -8,032,000 -6,000,000 15,866,000 -5,249,000 1,327,000 1,743,000 1,716,000 -6,581,000 2,377,000 766,000 1,507,000 3,496,000 2,084,000 -338,000 3,182,000 -3,248,000 -8,127,000 -1,378,000 -2,894,000 -3,358,000 5,624,000 5,678,000 -9,783,000 13,955,000 -11,288,000 -21,000 -14,035,000 -5,504,000 -5,778,000 11,995,000 -2,975,000 -27,115,000 -8,130,000 33,137,000 17,125,000 24,368,000 -4,086,000 1,738,000 -10,779,000 -3,659,000 -7,138,000 7,274,000 -6,883,000 -949,000 -2,560,000 16,846,000 3,442,000 12,223,000 -6,775,000 3,865,000 4,330,000 -2,143,000 -9,090,000 -15,661,000 14,575,000 -5,701,000 5,962,000 2,654,000 7,937,000  631,000 -1,577,000 3,734,000 -1,904,000 -2,120,000 4,629,000 -7,459,000 296,000 1,517,000 4,768,000 -63,000 987,000 
          liabilities for severance pay
        397,000 564,000 -606,000 837,000 659,000 254,000 225,000 -694,000 -1,141,000 753,000 -992,000 -311,000 -439,000 -768,000 -687,000 -1,264,000 -142,000 -904,000 -1,093,000 -511,000 -547,000 617,000 -703,000 627,000 -543,000 181,000 512,000 -342,000 406,000 -1,909,000 -256,000 -715,000 -267,000 777,000 -661,000 1,495,000 930,000 -417,000 -72,000 -92,000 -205,000 -598,000 925,000 -1,900,000 -1,810,000 -388,000 341,000 759,000 -305,000 614,000 2,069,000 -39,000 -817,000 1,127,000 -440,000 -1,578,000 578,000 1,281,000 1,268,000 -905,000 1,145,000 -129,000 1,007,000 1,151,000 -1,337,000 -1,464,000 -100,000 1,446,000 2,557,000 950,000 771,000 -187,000 289,000 360,000         
          change in operating lease liabilities
        -1,268,000 -2,731,000 -1,730,000 -866,000 -1,060,000 -3,742,000 -3,053,000 -1,861,000 -816,000 -938,000 -1,575,000 -633,000 -289,000 -1,509,000 -513,000 -1,012,000 -547,000 -881,000 -782,000 -660,000 -493,000 -1,329,000 -802,000 -900,000 -734,000                                                          
          other long-term liabilities
        -460,000  -3,000,000 3,473,000 -3,269,000  8,508,000 1,552,000 -1,770,000  -378,000 11,390,000 -236,000  -564,000 -1,081,000 -896,000  -35,000 -21,000 -35,000  -2,000 -120,000 -100,000  -5,542,000 -80,000 -616,000 -11,139,000 138,000 -1,251,000 1,008,000 -220,000 -1,817,000 1,305,000 -1,553,000 1,509,000 1,779,000 -295,000 317,000 -3,175,000 916,000 -840,000 -452,000 765,000 1,184,000 6,000 -231,000 2,291,000 -932,000 -232,000 -232,000 11,000 -231,000 -231,000 -257,000 152,000 -182,000 -1,061,000                      
          net cash from operating activities
        78,579,000 105,040,000 45,154,000 96,897,000 88,010,000 158,619,000 106,396,000 30,695,000 115,209,000 139,145,000 39,751,000 74,049,000 56,456,000 74,727,000 90,957,000 33,514,000 81,776,000 114,031,000 45,947,000 29,920,000 68,924,000 26,115,000 84,536,000 74,598,000 79,756,000 35,041,000 45,373,000 78,642,000 77,437,000 42,666,000 36,106,000 47,281,000 19,769,000 79,042,000 52,375,000 42,695,000 71,463,000 1,258,000 38,454,000 92,529,000 27,044,000 10,239,000 29,579,000 83,147,000 75,191,000 35,503,000 68,076,000 12,276,000 1,734,000 18,216,000 27,087,000 -9,695,000 30,205,000 41,874,000 34,220,000 59,008,000 26,440,000 13,066,000 20,710,000 10,694,000 48,240,000 33,076,000 22,364,000 12,798,000 42,534,000 27,052,000 40,273,000 15,808,000 33,816,000 15,257,000 28,786,000 6,254,000 8,428,000 17,807,000 26,301,000 5,072,000 23,855,000 73,386,000 26,352,000 12,676,000 22,524,000 24,582,000 
          cash flows from investing activities:
                                                                                          
          capital expenditures
        -113,787,000 -145,083,000 -147,267,000 -134,824,000 -192,602,000 -127,737,000 -109,716,000 -146,839,000 -103,386,000 -169,592,000 -182,078,000 -159,836,000 -106,877,000 -155,098,000 -144,939,000 -126,193,000 -137,246,000 -130,849,000 -80,535,000 -119,992,000 -87,896,000 -88,954,000 -80,530,000 -70,879,000 -80,375,000 -89,456,000 -75,650,000 -63,577,000 -51,303,000 -57,864,000 -61,532,000 -72,163,000 -66,962,000 -81,824,000 -61,395,000 -63,130,000 -52,885,000 -43,979,000 -40,172,000 -36,748,000 -31,031,000 -31,446,000 -43,756,000 -42,386,000 -33,462,000 -40,795,000 -48,330,000 -42,618,000 -52,458,000 -49,561,000 -46,688,000 -56,453,000 -64,449,000 -65,430,000 -88,906,000 -71,157,000 -54,562,000 -55,052,000 -55,755,000 -62,679,000 -76,492,000 -58,341,000 -64,669,000 -73,818,000 -73,795,000 -118,035,000 -120,666,000 -96,285,000 -81,620,000 -71,321,000 -75,684,000 -38,125,000 -31,228,000 -44,639,000 -34,843,000 -40,313,000 -39,702,000 -29,444,000 -38,532,000 -29,614,000 -19,159,000 -21,594,000 
          free cash flows
        -35,208,000 -40,043,000 -102,113,000 -37,927,000 -104,592,000 30,882,000 -3,320,000 -116,144,000 11,823,000 -30,447,000 -142,327,000 -85,787,000 -50,421,000 -80,371,000 -53,982,000 -92,679,000 -55,470,000 -16,818,000 -34,588,000 -90,072,000 -18,972,000 -62,839,000 4,006,000 3,719,000 -619,000 -54,415,000 -30,277,000 15,065,000 26,134,000 -15,198,000 -25,426,000 -24,882,000 -47,193,000 -2,782,000 -9,020,000 -20,435,000 18,578,000 -42,721,000 -1,718,000 55,781,000 -3,987,000 -21,207,000 -14,177,000 40,761,000 41,729,000 -5,292,000 19,746,000 -30,342,000 -50,724,000 -31,345,000 -19,601,000 -66,148,000 -34,244,000 -23,556,000 -54,686,000 -12,149,000 -28,122,000 -41,986,000 -35,045,000 -51,985,000 -28,252,000 -25,265,000 -42,305,000 -61,020,000 -31,261,000 -90,983,000 -80,393,000 -80,477,000 -47,804,000 -56,064,000 -46,898,000 -31,871,000 -22,800,000 -26,832,000 -8,542,000 -35,241,000 -15,847,000 43,942,000 -12,180,000 -16,938,000 3,365,000 2,988,000 
          cash received from sale of a power plant
        93,136,000                                                                                  
          investment in unconsolidated companies
        -25,500,000 -1,500,000 1,000 -1,001,000 -15,296,000 -17,154,000 -590,000 -617,000 -608,000 -581,000 -1,499,000 -3,866,000 -4,235,000 -156,000 -2,196,000 -2,157,000 -193,000 -4,203,000 -2,005,000 -6,166,000 -7,035,000 -7,401,000 -358,000 -7,578,000    -2,525,000 -1,275,000 -8,451,000 -10,455,000 -12,494,000 -14,918,000        -631,000 -1,543,000 -726,000 -198,000 -130,000 -937,000 -208,000 -115,000 -167,000                           
          cash paid for business acquisition, net of cash acquired
        -78,282,000     -1,000 -274,631,000                                                                          
          decrease in severance pay fund asset, net of payments to retired employees
        -56,000  -105,000 -3,000 -50,000                                                                              
          net cash from investing activities
        -124,489,000 -146,638,000 -147,371,000 -224,478,000 -207,948,000 -135,139,000 -120,153,000 -147,128,000 -377,834,000 -170,177,000 -183,224,000 -163,765,000 -111,177,000 -153,829,000 -144,541,000 -85,704,000 -139,332,000 -128,248,000 -255,433,000 -137,038,000 -117,474,000 -92,999,000 -133,943,000 -78,207,000 -80,820,000 -61,527,000 -78,843,000 -63,224,000 -50,944,000 -50,884,000 -55,360,000 -168,156,000 -68,034,000 -106,551,000 -67,465,000 -65,367,000 -128,738,000 -33,342,000 -69,900,000 -10,669,000 -44,620,000 2,895,000 -32,176,000 -47,257,000 -106,423,000 6,311,000 -35,323,000 -25,029,000 -4,925,000 -98,244,000 -47,179,000 13,417,000 -4,695,000 -62,333,000 -102,816,000 -102,445,000 -27,817,000 -107,924,000 -44,006,000 -44,033,000 -64,981,000 -37,155,000 -90,479,000 -67,177,000 -91,225,000 -95,289,000 -136,325,000 -95,063,000 -72,314,000 -57,499,000 -19,930,000 -58,607,000 19,725,000 -91,566,000 -27,759,000 -110,000,000 -19,822,000 -15,887,000 -30,612,000 -66,983,000 30,074,000 -86,629,000 
          cash flows from financing activities:
                                                                                          
          proceeds from long-term loans, net of transaction costs
        5,238,000 103,921,000 145,241,000 99,775,000 199,564,000 71,991,000 49,848,000 61,446,000 331,345,000 49,987,000 99,850,000 60,259,000      289,855,000   41,347,000 91,500,000 114,700,000 100,000,000                                                  
          proceeds from exercise of options by employees
            754,000  1,000 94,000 55,000 287,000 27,000 -3,000 -57,000 99,000         372,000        -271,000 15,597,000   -1,000 1,305,000 1,750,000 4,195,000 646,000 1,262,000 2,704,000 349,000                 151,000 237,000 822,000 32,000 55,000 331,000   340,000 34,000 67,000 302,000          
          proceeds from issuance of convertible notes, net of transaction costs
        976,500,000     -162,000        -702,000                                                                    
          purchase of treasury stock
        -24,395,000                                                                                
          proceeds related to tax monetization transactions
        46,413,000 42,158,000                                                                                 
          prepayments of convertible notes
        -310,862,000                                                                                  
          proceeds from revolving credit lines with banks
        414,000,000 525,000,000 766,500,000 352,000,000 330,000,000 51,000,000 94,500,000 40,000,000 20,000,000            -1,239,000 377,739,000 872,900,000 139,350,000 13,000,000 383,800,000 914,700,000 1,277,200,000 1,028,400,000 930,600,000 860,800,000 401,900,000 258,100,000 387,500,000 50,000,000 49,500,000 125,400,000 84,800,000 49,700,000 108,900,000 489,900,000 658,300,000 854,800,000 887,583,000 815,526,000 757,568,000 597,193,000 818,648,000 1,051,133,000 901,113,000 182,641,000 472,427,000 219,861,000 119,961,000 79,334,000 385,969,000 84,895,000 47,200,000 273,500,000 302,000,000                    
          repayment of revolving credit lines with banks
        -494,000,000 -480,000,000 -828,000,000 -255,500,000 -330,000,000 -51,000,000 -94,500,000 -60,000,000             -98,818,000 -548,182,000 -642,950,000 -98,800,000 -66,100,000 -391,600,000 -1,012,800,000 -1,327,700,000 -977,500,000 -810,500,000 -873,800,000 -384,300,000 -254,200,000 -387,500,000 -20,000,000 -49,500,000 -125,400,000 -93,800,000 -40,700,000 -139,500,000 -479,600,000 -754,800,000 -827,400,000 -902,400,000 -772,485,000 -765,670,000 -582,450,000 -932,516,000 -1,067,028,000 -925,386,000 -169,048,000 -479,700,000 -150,000,000 -87,000,000 -150,300,000 -503,900,000 -9,000,000 -22,700,000    -20,000,000                  
          cash received from noncontrolling interest
        5,473,000 10,276,000 12,251,000 7,341,000 5,443,000 5,390,000 1,307,000 6,270,000 3,346,000 4,134,000 606,000 1,411,000                                              
          repayments of long-term debt
        -70,636,000  -66,474,000 -79,082,000 -57,708,000  -55,972,000 -70,818,000 -37,826,000  -60,678,000 -72,368,000 -42,814,000  -38,781,000 -57,817,000 -39,058,000  -21,876,000 -19,908,000 -16,573,000 -19,778,000 -83,822,000 -15,368,000 -16,416,000 -19,711,000 -16,230,000 -21,010,000 -15,757,000 -20,916,000 -13,594,000 -11,577,000 -16,687,000 -10,997,000 -22,049,000 -19,772,000 -13,405,000 -21,055,000 -9,611,000 -19,755,000 -11,631,000 -11,128,000 -18,910,000 -10,494,000 -39,145,000 -30,550,000 -10,528,000 -18,693,000 -13,592,000 -5,195,000  -11,940,000 -13,142,000 -3,845,000  -2,959,000 -20,609,000 -2,434,000      -9,359,000 -1,590,000 -15,561,000 -1,586,000                
          cash paid to noncontrolling interest
        -2,421,000 -446,000 -4,087,000 -305,000 -2,996,000 -298,000 -2,068,000 -839,000 -3,168,000 24,667,000 -30,939,000 -599,000 -2,985,000 62,000 -2,079,000 -489,000 -3,374,000 128,000 -1,817,000 -1,017,000 -4,197,000 -505,000 -5,573,000 -382,000 -3,279,000 -331,000 -1,571,000 -3,369,000 -4,459,000 -3,551,000 -1,525,000 -3,356,000 -4,674,000 -3,281,000 -3,438,000 -7,787,000 -6,807,000 -46,769,000         -3,091,000   -3,783,000                                 
          payments under finance lease obligations
        -524,000 -556,000 -519,000 -386,000 -379,000 -360,000 -336,000 -335,000 -352,000 -373,000 -635,000 -385,000 -570,000 -636,000 -670,000 -849,000 -828,000 4,762,000 -6,385,000 -794,000 -764,000 -685,000 -816,000 -714,000 -675,000                                                          
          debt issuance costs
        -8,628,000  -7,873,000 -5,579,000 -3,385,000                                                                              
          cash dividends paid
        -7,506,000 -7,242,000 -7,275,000 -7,282,000 -7,273,000 -7,262,000 -7,260,000 -7,344,000 -7,243,000 -7,223,000 -7,228,000 -7,229,000 -6,732,000 -6,966,000 -6,719,000 -6,731,000 -6,727,000 -7,104,000 -6,716,000 -6,448,000 -6,718,000 -5,579,000 -5,559,000 -5,719,000 -5,614,000 -5,612,000 -5,606,000 -5,589,000 -5,579,000 -5,068,000 -5,064,000 -5,062,000 -11,640,000 -3,899,000 -4,186,000 -3,978,000 -8,448,000 -3,213,000 -3,471,000 -3,526,000 -15,472,000 -2,942,000 -2,932,000 -3,898,000 -2,276,000 -2,276,000 -2,727,000    -1,817,000   -1,817,000 -1,817,000 -2,290,000 -2,271,000 -2,269,000 -5,455,000 -2,725,000 -2,725,000 -2,722,000 -3,175,000 -2,268,000 -2,267,000 -2,271,000 -2,106,000 -2,076,000 -1,900,000 -1,907,000 -2,673,000 -1,424,000 -1,424,000   -947,000 -953,000    
          net cash from financing activities
        528,652,000 116,665,000 102,151,000 108,077,000 138,853,000 5,886,000 26,837,000 -18,751,000 273,944,000 132,396,000 -65,519,000 -37,294,000 350,381,000 52,673,000 -49,410,000 167,731,000 -44,721,000 1,373,000 235,988,000 -28,169,000 -22,807,000 313,486,000 88,570,000 -66,673,000 168,095,000 -1,118,000 32,979,000 -6,587,000 -31,039,000 31,307,000 31,583,000 131,564,000 56,677,000 -1,885,000 -26,088,000 -33,076,000 1,199,000 172,232,000 -71,044,000 -37,802,000 -19,845,000 20,742,000 69,538,000 -5,396,000 -6,437,000 -9,621,000 -42,180,000 19,295,000 -25,543,000 71,027,000 49,196,000 -32,882,000 -43,406,000 5,153,000 109,405,000 58,176,000 5,040,000 52,718,000 18,341,000 44,423,000 13,545,000 30,117,000 42,400,000 57,533,000 56,986,000 64,565,000 -3,572,000 186,300,000 21,993,000 69,138,000 -13,429,000 55,013,000 -26,163,000 74,157,000 -3,422,000 110,570,000 -11,915,000 -79,061,000 5,574,000 57,084,000 -44,901,000 69,158,000 
          effect of exchange rate changes
        -666,000  -261,000 862,000 19,000  -47,000 -35,000 -128,000  -123,000 70,000 -14,000  -352,000 -293,000 -34,000 -12,000 -79,000 85,000 -342,000 634,000 545,000 340,000 -365,000 677,000 -1,111,000 344,000 -485,000                                                      
          net change in cash and cash equivalents and restricted cash and cash equivalents
        482,076,000 75,129,000 -327,000 -18,641,000 18,933,000 28,997,000 13,033,000 -135,219,000 11,191,000 101,503,000 -209,115,000 -126,940,000 295,646,000 -26,359,000 -103,346,000 115,248,000 -102,311,000 -12,856,000 26,423,000 -135,202,000 -71,699,000 247,236,000 39,708,000 -69,942,000 166,666,000 -26,927,000 -1,602,000 9,175,000 -5,031,000 22,429,000 12,329,000 10,689,000 8,412,000                                                  
          cash and cash equivalents and restricted cash and cash equivalents at beginning of period
        280,866,000 205,772,000 287,770,000 226,676,000 343,444,000 536,778,000 153,110,000 177,495,000                                                    
          cash and cash equivalents and restricted cash and cash equivalents at end of period
        762,942,000 75,129,000 -327,000 -18,641,000 224,705,000 28,997,000 13,033,000 -135,219,000 298,961,000 101,503,000 -209,115,000 -126,940,000 522,322,000 -26,359,000 -103,346,000 115,248,000 241,133,000 -12,856,000 26,423,000 -135,202,000 465,079,000 247,236,000 39,708,000 -69,942,000 319,776,000 -26,927,000 -1,602,000 9,175,000 172,464,000 22,429,000 12,329,000 37,682,000 105,055,000                                                  
          supplemental non-cash investing and financing activities:
                                                                                          
          change in accounts payable related to purchases of property, plant and equipment
        -20,696,000  -10,007,000 20,903,000 -22,093,000  -13,980,000 -19,107,000 -3,158,000  42,834,000                                                                        
          right of use assets obtained in exchange for new lease liabilities
        1,955,000 8,062,000 2,548,000 3,772,000 1,469,000 4,315,000 5,497,000 1,651,000 1,897,000 1,083,000 2,123,000 2,168,000 1,028,000 3,510,000 2,936,000 1,000,000 1,313,000 596,000 906,000 4,206,000 467,000    1,194,000 1,191,000                                                         
          loss on disposal of property, plant and equipment
                          6,000 -10,000 91,000  -183,000 713,000 88,000  290,000 759,000 377,000  423,000                                                  
          write-off of unsuccessful exploration activities
             2,474,000 77,000       1,000                7,000 -4,000 123,000     303,000 1,294,000 863,000 557,000 186,000 174,000      720,000 1,151,000 768,000                            
          impairment of long-lived assets
                                                                                          
          loss on foreign currency exchange rate
                                                                                          
          other liabilities
                                                                                 -20,000 -40,000 -20,000 -20,000 -20,000 
          cash paid for acquisition of a business, net of cash acquired
                                                                                          
          decrease in severance pay fund asset, net of payments made to retired employees
               329,000 791,000 -4,000 353,000 -63,000 -65,000 669,000 554,000 -25,000 -27,000  1,000,000 1,170,000 182,000 316,000 543,000 73,000 -87,000 72,000 -97,000 353,000 359,000       -112,000 -18,000 -57,000 927,000 -45,000 1,037,000 -6,000                                         
          proceeds from issuance of common stock, net of stock issuance costs
                                                                                          
          proceeds from issuance of commercial paper, net of transaction costs
                                                                                          
          transaction with noncontrolling interest
                                                                                          
          repayments of long-term debt and financing liability
                                                                                          
          deferred debt and tax monetization transactions issuance costs
                                                                                          
          effect of exchange rate changes on cash and cash equivalents and restricted cash and cash equivalents
                                                                                          
          supplemental disclosure of cash flow information:
                                                                                          
          cash paid during the year for:
                                                                                          
          interest, net of interest capitalized
                                                                                          
          income taxes, net of refunds
                                                                                          
          increase in accounts payable related to purchases of property, plant and equipment
                    -1,221,000 -9,208,000 2,990,000 2,534,000 8,448,000 6,881,000 5,594,000 4,233,000 -8,732,000 4,143,000 1,231,000 -790,000 -1,436,000 1,927,000 1,486,000 5,857,000 153,000 3,512,000 -4,188,000 -4,529,000 -1,673,000  -1,356,000 537,000 1,801,000 2,298,000 2,439,000 -1,660,000 -5,296,000 6,318,000   2,068,000   3,681,000   -694,000    2,071,000 16,152,000      2,527,000 -2,704,000 -18,991,000 -4,722,000 -5,817,000 9,181,000 -5,979,000 15,983,000 13,530,000 -4,567,000 4,663,000 5,039,000 1,832,000 6,666,000 -72,000 -1,280,000      
          increase in asset retirement cost and asset retirement obligation
                                                                         -1,275,000   493,000 -3,689,000   3,372,000 373,000 655,000      
          equity in earnings of investees
          -455,000    1,624,000 -1,232,000 -829,000    -271,000    -577,000                                                                  
          gain on severance pay fund asset
          -118,000      -97,000                      -91,000 592,000 129,000 -283,000 74,000 -590,000 -947,000 386,000 -437,000 311,000 -564,000 470,000     17,000 4,000       306,000 1,501,000 -605,000 -614,000   -420,000   -1,113,000 1,219,000 1,863,000 553,000 -1,803,000 -937,000 25,000 -776,000 212,000 -183,000          
          gain on foreign currency exchange rates
                                                                                          
          buyout of class b membership in opal geo
                                                                                          
          proceeds related to tax monetization transaction
                                                                                          
          loss from prepayment of a long-term loan
                                                                                        
          other
                     -1,000 248,000 328,000 259,000                236,000          -181,000 -819,000           -5,478,000                     
          purchase of marketable securities
                     -19,192,000 -10,750,000 -1,699,000 -19,866,000 -27,755,000                                                              
          maturities of marketable securities
                     13,355,000 19,290,000 12,707,000 1,915,000                                                                
          sale of marketable securities
                                                                                        
          cash received from insurance recoveries
                                                                                          
          purchase of capped call instruments
                                                                                        
          proceeds from the sale of limited liability company interest, net of transaction costs
                                 -382,000                                                         
          repayments of commercial paper and prepayments of long-term debt
                                                                                          
          deferred debt issuance costs
             -3,406,000 -1,579,000 -955,000 -1,118,000 -1,070,000 -1,047,000 -1,255,000 -857,000 -866,000 -459,000 -98,000 -276,000 1,106,000 -2,215,000 -2,000 -230,000 562,000 -1,683,000 -261,000 -416,000 -599,000 -221,000 -3,122,000 -1,223,000 -2,285,000 -1,574,000 -408,000 -1,020,000 -638,000 -921,000 -2,587,000 -1,144,000 -2,896,000 -575,000 -1,339,000 -1,592,000 -1,389,000 -1,490,000 -2,159,000 -2,053,000 -2,280,000 -391,000   -47,000 -1,020,000 -907,000 -904,000 -366,000 2,968,000 -3,175,000 -1,076,000 -1,301,000 -446,000 -25,000 -22,000             32,000 -522,000 -198,000    -1,912,000  
          income taxes
                                                                                          
          proceeds from issuance of common stock, net of related costs
                  8,000 44,542,000 297,121,000                                                                      
          other investing activities
                            -2,819,000                                                             
          write-off of energy storage project assets and unsuccessful exploration activities
                                                                                          
          prepayments of a long-term loan
                                                                                         
          write-off of storage projects and assets
                      128,000 1,826,000                                                                  
          stock issuance costs reimbursement
                          -3,000 285,000                                                              
          amortization of deferred lease income
                                 -671,000 -670,000 -569,000 -775,000 -671,000 -672,000 -671,000 -671,000 -671,000 -671,000 -672,000 -671,000 -671,000 -671,000 -672,000 -671,000 -672,000 -671,000 -671,000 -671,000 -672,000 -671,000 -671,000 -672,000 -671,000 -671,000 -671,000 -672,000 -671,000 -671,000 -671,000 -672,000 -671,000 -671,000 -672,000 -671,000 -671,000 -671,000 -672,000 -671,000 -671,000 -672,000 -671,000 -671,000 -671,000 -672,000 -672,000 -671,000 -671,000 -672,000 -672,000 -671,000 -572,000     
          equity in losses (earnings) of investees
                                      -176,000 -388,000 -1,210,000                                                  
          deferred lease revenues
                                 -104,000 -106,000   -99,000 -98,000 -101,000 -104,000 -82,000 -92,000 -90,000 -92,000 -228,000 -794,000 81,000 88,000 -73,000 -74,000 -74,000 -64,000 -61,000 -63,000 -50,000 -86,000 -31,000 18,000 36,000 37,000 37,000 143,000 144,000 358,000 -269,000 151,000 275,000 394,000 284,000 116,000 143,000 582,000                  
          decrease (increase) in severance pay fund asset, net of payments made to retired employees
                                      510,000 137,000 203,000 -3,000                                                 
          proceeds from issuance of commercial paper
                                                                                         
          repayments of commercial paper and prepayment of loans
                              -3,775,000                                                            
          impairment charge
                                                          229,113,000                                
          gain from insurance recoveries
                                     2,687,000                                                     
          buyout of class b membership in opc
                                                                                          
          proceeds from sale of membership interests to noncontrolling interest, net of transaction costs
                                                                                        
          restricted cash and cash equivalents acquired in a business combination
                                                                                        
          repayments of commercial paper
                                -41,725,000                                                          
          buyout of class b membership in ortp
                                         -43,000                                                 
          cash paid for acquisition of controlling interest in a subsidiary, net of cash acquired
                                       -35,300,000 -2,000,000                                             
          intangible assets acquired
                                                                                         
          prepayment of long-term debt
                                                                                          
          cash paid for achievement of production threshold in gb
                                                                                          
          operating lease right of use asset
                                  1,444,000 2,478,000 1,698,000                                                      
          cash received from insurance recoveries related to destroyed equipment
                                     3,277,000                                                     
          proceeds from issuance of senior unsecured notes, net of transaction costs
                                                                                         
          purchase of senior unsecured notes
                                                                                         
          prepayment of loans
                                                                                         
          payments of finance leases
                                  -1,021,000 -946,000 -767,000                                                      
          proceeds from the sale of limited liability company interest in tungsten, net of transaction costs
                                     -228,000                                                    
          accrued liabilities related to financing activities
                                   2,131,000 2,154,000 2,720,000 3,885,000       163,000 2,360,000 3,768,000            513,000    325,000              82,000 134,000          
          amortization of premium from senior unsecured bonds
                                             -359,000 -77,000 -77,000 -76,000 -77,000 -77,000 -77,000 -76,000 -77,000 -78,000 -76,000 -77,000 -76,000 -77,000 -76,000 -78,000  -7,000                           
          deferred income tax provision and deferred charges
                                     25,972,000 -1,552,000 24,407,000 -29,467,000                                                  
          purchase of ofc senior secured notes
                                                  -12,860,000 -11,888,000                                 
          payments of capital leases
                                     -845,000 -734,000 -536,000 -436,000 -399,000 -721,000 -343,000 -408,000 -333,000                                             
          changes in operating assets and liabilities, net of amounts acquired:
                                                                                          
          proceeds from insurance recoveries
                                                                                          
          proceeds from insurance recoveries related to destroyed equipment
                                                                                          
          cash and cash equivalents and restricted cash and cash equivalentsat beginning of period
                                        96,643,000                                                  
          due from/to related entities
                                                      -23,000 -22,000 -24,000 -22,000 -22,000 -22,000 -20,000 94,000 -26,000 -23,000 -29,000 17,000 129,000 -206,000 37,000 -1,000 69,000 -208,000 396,000 -132,000 -217,000 -51,000 -213,000 785,000 -27,000 5,000 758,000 1,435,000 -2,807,000 -79,000 418,000 1,676,000 -126,000 -289,000 
          due from/to parent
                                                 -513,000 -363,000 -73,000 -152,000 95,000 -104,000 -53,000 -115,000 -35,000 -38,000 137,000 -109,000 -29,000 381,000 -231,000 1,165,000 -1,236,000 -107,000 1,059,000 1,076,000 35,000 -867,000 -695,000 174,000 966,000 -1,206,000 -2,297,000 1,601,000            
          cash acquired in organizational restructuring and share exchange with parent
                                                                                         
          net change in restricted cash, cash equivalents and marketable securities
                                         -6,266,000 6,951,000 10,369,000 -25,617,000 16,263,000 -12,520,000 26,124,000 -14,626,000 34,347,000 10,660,000 -22,282,000    1,315,000 39,375,000 -48,350,000 -241,000 21,496,000 -22,647,000 376,000 -13,730,000 -33,078,000 26,114,000 -29,920,000 -31,087,000 19,050,000 -11,315,000 20,346,000 -25,586,000 6,600,000 -17,233,000 23,846,000 -15,131,000 -91,000 -3,010,000 20,400,000 17,650,000 -25,165,000 7,232,000 -11,112,000 -9,183,000 3,251,000 759,000 2,806,000 4,326,000 -9,801,000 -11,027,000  
          cash paid for achievement of production threshold in guadeloupe
                                                                                          
          proceeds from the sale of limited liability company interest in opal geo llc, net of transaction costs
                                                                                          
          net change in cash and cash equivalents
                                         -29,394,000 -41,178,000 -55,748,000 -56,076,000 140,148,000 -102,490,000 44,058,000 -37,421,000 33,876,000 66,941,000 30,494,000 -37,669,000 32,193,000 -9,427,000 6,542,000 -28,734,000 -9,001,000 29,104,000 -29,160,000 -17,896,000 -15,306,000 40,809,000 14,739,000 3,663,000 -42,140,000 -4,955,000 11,084,000 -3,196,000 25,964,000 -25,685,000 3,317,000 8,318,000 -3,750,000                 
          cash and cash equivalents at beginning of period
                                         230,214,000 185,919,000 40,230,000 57,354,000 66,628,000  99,886,000  82,815,000    34,393,000  47,227,000 20,254,000 26,976,000  36,750,000  
          cash and cash equivalents at end of period
                                         -29,394,000 -41,178,000 -55,748,000 174,138,000 140,148,000 -102,490,000 44,058,000 148,498,000 33,876,000 66,941,000 70,724,000 -37,669,000 32,193,000 47,927,000 6,542,000 -28,734,000 57,627,000  -29,160,000 -17,896,000 84,580,000  14,739,000 3,663,000 40,675,000 -4,955,000    -25,685,000 3,317,000 42,711,000  -99,624,000 107,045,000 30,722,000 26,896,000 -4,573,000 2,660,000 22,244,000 398,000 -4,880,000 5,642,000 19,094,000  1,314,000 2,777,000 44,447,000  
          increase (decrease) in accounts payable related to purchases of property, plant and equipment
                                                                                          
          increase (decrease) in asset retirement cost and asset retirement obligation
                                                                                          
          prepayment of ofc senior secured notes
                                                                                          
          gain on sale of a subsidiary
                                                                 -14,000 -6,336,000                      
          cash received from sale of a subsidiary
                                                                 19,594,000                      
          cash grant received from the u.s. treasury under section 1603 of the arra
                                                    5,616,000 21,811,000                                    
          payment for acquisition of noncontrolling interest in crump
                                                                                          
          cash paid for interest rate cap
                                                                                          
          proceeds from sale of membership interests to uncontrolling interest, net of transaction costs
                                                                                          
          proceeds from long-term loans, net at transaction costs
                                                                                          
          cash received from non-controlling interest
                                              1,972,000 1,654,000 2,234,000                                    
          cash paid to non-controlling interest
                                               -5,932,000 -6,317,000 -6,445,000 -3,915,000 -3,503,000 -3,817,000   -3,194,000   -4,392,000 -3,494,000 -3,268,000 -4,229,000 -3,270,000 -3,734,000 -4,419,000 -2,616,000                         
          gain on acquisition of controlling interest
                                                                                          
          cash acquired in organizational restructuring and share exchange with ormat industries
                                                   15,391,000                                       
          cash received from sale of property, plant and equipment
                                                      15,000,000                                    
          increase in severance pay fund asset, net of payments made to retired employees
                                                   2,020,000 414,000 911,000 168,000 111,000 1,191,000 -130,000  -111,000 -151,000 64,000  -7,000 55,000 13,000 172,000 -404,000 -3,000                      
          decrease in accounts payable related to purchases of property, plant and equipment
                                                   -118,000   -5,641,000   -4,950,000   -2,240,000 -11,509,000    -5,947,000   -1,649,000                      
          gain on sale of a subsidiary and property, plant and equipment
                                                                                         
          short-term deposit
                                                       3,021,000                                   
          net change in restricted cash and cash equivalents
                                                    -73,375,000 20,329,000 -23,341,000                                    
          cash received from sale of a subsidiary and property, plant and equipment
                                                                                         
          proceeds from long-term loans
                                                       45,000,000            50,000,000                     
          proceeds from the sale of limited liability company interest in ortp, llc, net of transaction costs
                                                       -132,000 -689,000 32,197,000                                 
          equity in (income) losses of investees
                                                                                          
          adjustments to reconcile net income or loss to net cash from operating activities:
                                                                                          
          return of investment in unconsolidated investments
                                                         -5,000         3,516,000                      
          proceeds from the sale of limited liability company interest in ortp llc
                                                                                          
          write-off of unconsolidated investment
                                                          1,014,000                                
          changes in operating assets and liabilities:
                                                                                          
          marketable securities
                                                          5,483,000 10,508,000 2,772,000        1,380,000   4,000 1,000 1,000 12,588,000 -8,853,000 39,073,000 4,478,000 44,024,000 -36,203,000 23,800,000 -74,743,000 34,492,000 10,859,000 3,292,000 -28,667,000 60,122,000  
          cash grant received
                                                          46,947,000                               
          proceeds from issuance of senior unsecured bonds
                                                             107,447,000                         
          equity in income (losses) of investees
                                                              407,000 71,000 69,000 412,000                         
          impairment of auction rate securities
                                                              -2,000 207,000       280,000 1,822,000 2,045,000 328,000              
          return on investment in unconsolidated investments
                                                                  3,734,000                      
          premium from issuance of senior unsecured bonds
                                                                                          
          cash paid for investment in a joint venture
                                                                                          
          proceeds from issuance of senior secured notes, net of transaction costs
                                                                                          
          proceeds from the sale of limited liability company interest in opc llc, net of transaction costs
                                                              24,878,000         -50,000   -18,000 -334,000            
          parent
                                                                                        
          cash and cash equivalents at beginning of year
                                                                    46,307,000                      
          cash and cash equivalents at end of year
                                                                    43,111,000                      
          payable related to investment in joint venture
                                                                                          
          unrealized loss on interest rate lock transactions
                                                                                          
          premium from issuance senior unsecured bonds
                                                                1,975,000                         
          short-term bank deposit
                                                                                          
          proceeds from the sale of limited liability company interest in opc llc
                                                                                          
          amortization of premium from senior secured bonds
                                                                                          
          gain from extinguishment of liability
                                                                                          
          repayment from unconsolidated investment
                                                                     32,000 30,000 30,000 31,000 33,000 31,000 32,000 32,000 32,000 31,000 34,000 31,000        
          payment for acquiring opc llc shares
                                                                                          
          effect of exchange rate changes on cash and cash equivalents
                                                                     -74,000 30,000 163,000 23,000                  
          changes in unrealized loss in respect of derivative instruments
                                                                                         
          purchases of marketable securities
                                                               1,797,000 881,000 -22,965,000                         
          deferred income tax benefit
                                                                             -3,335,000 1,019,000            
          equity in income of investees
                                                                  83,000 -479,000 -546,000 -640,000 -591,000 -355,000 -550,000 -406,000 -372,000 -408,000 -539,000 -878,000 -1,452,000 -1,181,000 -1,231,000 -507,000 -1,429,000 -931,000 -1,279,000 -1,623,000 -1,641,000 -2,097,000 -1,533,000  
          changes in operating assets and liabilities net of amounts acquired:
                                                                                          
          investment in unconsolidated company
                                                                  -230,000 -281,000                      
          increase in accounts payable related to purchases of property, plant
                                                                                          
          and equipment
                                                                                          
          loss on disposal of property , plant and equipment
                                                                                          
          income from sell of auction rate securities
                                                                                          
          cash paid for acquisition
                                                                                          
          intangible asset acquired
                                                                                        
          proceeds from public offerings, net of issuance costs
                                                                                        
          proceeds from issuance of unregistered shares of common stock to the parent
                                                                         33,315,000              
          purchase of limited liability company interest in opc llc
                                                                                          
          proceeds from sale of interest rate caps
                                                                                          
          repayment of capital notes to parent
                                                                                          
          decrease in asset retirement cost and asset retirement obligation
                                                                                          
          income attributable to sale of equity interests, net of interest expense
                                                                      -1,975,000 -2,473,000 -2,238,000                  
          return on investment in unconsolidated investees
                                                                                          
          return of investment in unconsolidated investees
                                                                                          
          increase in severance pay fund asset
                                                                      -224,000 -191,000 -227,000 -17,000   -303,000    -334,000 -440,000 -166,000 -226,000 -40,000 -261,000 -18,000 -108,000 -116,000  
          repayments of revolving credit lines with banks
                                                                      -310,000,000                    
          repayments of long-term debt:
                                                                                          
          deferred financing costs
                                                                      -12,000 -3,608,000 -1,281,000                  
          distributions from unconsolidated investments
                                                                         1,118,000   -7,236,000 5,655,000 3,197,000 884,000 1,583,000 881,000 881,000 1,158,000 1,136,000 1,371,000 2,862,000 325,000 314,000 
          due to parent
                                                                       -9,600,000 -7,000,000 -15,047,000 -9,600,000 -7,000,000 -15,047,000 -9,600,000 -7,000,000 -33,023,000 2,188,000 -1,889,000 1,077,000 -21,754,000 1,201,000   4,178,000 
          proceeds from long-term loan
                                                                       42,000,000 90,000,000                  
          minority interest
                                                                         -3,095,000 -2,916,000 -2,950,000 -2,205,000 -2,297,000 -1,280,000            
          capital gain from purchase of ofc senior secured notes
                                                                                          
          cash paid for acquisitions, net of cash received
                                                                                 -7,398,000        
          proceeds from the sale of limited liability company interest in opc llc, net of
                                                                                          
          transaction costs
                                                                                          
          deferred revenues
                                                                                          
          decrease (increase) in severance pay fund asset
                                                                                          
          net increase in cash and cash equivalents
                                                                           107,045,000 -16,505,000 26,896,000 -4,573,000 2,660,000 1,990,000 398,000 -4,880,000 5,642,000 -7,882,000 -21,562,000 1,314,000 2,777,000 7,697,000 7,111,000 
          repayments of short-term and long-term debt
                                                                            -2,216,000 -18,140,000 -11,506,000 -3,099,000 -16,792,000 -2,030,000 -1,998,000 -11,991,000 -4,717,000 -150,610,000 -2,274,000 -7,029,000 -24,062,000  
          adjustments to reconcile net income to net cash from operating activities
                                                                                          
          extinguishment of deferred financing costs
                                                                                          
          distributions from unconsolidated investment
                                                                                          
          realization of loss related to interest rate cap transaction
                                                                                          
          changes in operating assets and liabilities, net of acquisitions
                                                                                          
          costs and estimated earnings in excess of billings on uncompleted contract
                                                                                          
          billings in excess of costs and estimated earnings on uncompleted contract
                                                                                          
          proceeds from operating lease transaction
                                                                                          
          deferred lease transaction costs
                                                                                          
          decrease in severance pay fund asset
                                                                             -257,000             
          proceeds from the sale of interest rate lock transactions
                                                                                          
          proceeds from the sale of interest rate caps
                                                                                         
          proceeds from short term bank credit
                                                                                          
          proceeds from issuance of long-term debt
                                                                                         
          cash paid during the year for
                                                                                          
          accrued liabilities for deferred debt issuance and lease costs
                                                                                          
          acquisitions — see note 2
                                                                                          
          changes in operating assets and liabilities, net of acquisitions:
                                                                                          
          proceeds from follow-on public offering, net of issuance costs
                                                                                         
          share-based compensation
                                                                               1,046,000 559,000 530,000 535,000 430,000 211,000      
          unrealized gain in respect of derivative instruments
                                                                                          
          unrealized loss in respect of derivative instruments
                                                                                -83,000 201,000         
          due from parent
                                                                                853,000          
          cash dividend declared
                                                                                    947,000    947,000  
          minority interest in earnings of subsidiaries
                                                                                 242,000        
          realization of loss related to interest rate cap transactions
                                                                                          
          gain on sale of geothermal resource rights
                                                                                          
          loss on severace pay fund asset
                                                                                 -452,000         
          decrease of cash resulting from deconsolidation of olcl
                                                                                         
          proceeds from sale of geothermal resource rights
                                                                                          
          proceeds from interest rate lock transactions
                                                                                          
          payment for interest rate caps
                                                                                          
          conversion of note payable to parent to equity
                                                                                         
          acquisitions — see notes 2 and 5
                                                                                          
          accretion of asset retirment obligation
                                                                                  250,000        
          acquisition – see note 5
                                                                                          
          gain on severace pay fund asset
                                                                                          
          liability for severance pay
                                                                                   770,000 489,000 277,000 -138,000 166,000 693,000  
          amortization of unrealized loss in respect of derivative instruments
                                                                                    -90,000      
          changes in operating assets and liabilities, net of acquisition:
                                                                                          
          cash paid for acquisition, net of cash received
                                                                                    -15,362,000      
          repayment from unconsolidated investments
                                                                                    31,000 129,000     
          accrued liabilities related to follow-on offering
                                                                                    887,000      
          acquisition – see note 5.
                                                                                          
          recovery of doubtful accounts
                                                                                          
          cumulative effect of change in accounting principle
                                                                                          
          proceeds from issuance of notes payable to parent
                                                                                          
          disributions to minority shareholders
                                                                                          
          proceeds from initial public offering, net of issuance costs
                                                                                          
          interest, net of capitalized interest
                                                                                          
          increase in asset retirement cost
                                                                                          
          increase in asset retirement obligation
                                                                                          
          conversion of amounts due to parent to notes payable to parent
                                                                                          
          conversion of notes payable to parent to equity
                                                                                          
          accounts payable related to purchases of property, plant and equipment
                                                                                     4,227,000 645,000 937,000 1,718,000  
          business acquisition — see note 2.
                                                                                          
          deferred debt issuance and lease costs
                                                                                         
          proceeds from lease transaction
                                                                                      7,600,000    
          deferred stock offering costs
                                                                                          
          deferred rental income
                                                                                          
          asset retirement obligation
                                                                                         116,000 
          repayment from joint ventures
                                                                                       187,000 254,000 138,000 
          distribution to parent
                                                                                          
          cash dividend paid
                                                                                        -2,500,000  
          loss on sale of subsidiary
                                                                                          
          changes in operating assets and liabilities, net of sale and acquisitions:
                                                                                          
          distribution from unconsolidated investments
                                                                                          
          change in restricted cash and cash equivalents
                                                                                         25,153,000 
          increase in severance fund asset
                                                                                          
          cash received from sale of subsidiary
                                                                                          
          distributions to minority shareholders
                                                                                          
          contributions from (distributions to) parent
                                                                                          
          proceeds from issuance of short-term debt
                                                                                          
          repayments of short term and long-term debt
                                                                                          
          payment for interest rate cap
                                                                                          
          effect of foreign currency translation adjustments
                                                                                          
          cash and cash equivalents at beginning of the year
                                                                                          
          cash and cash equivalents at end of the year
                                                                                          
          interest
                                                                                         11,126,000 
          effect of adopting sfas no. 143
                                                                                          
          asset retirement cost
                                                                                          
          deconsolidation of olcl non-cash assets
                                                                                          
          business acquisitions — see note 2
                                                                                          
          minority interest in earnings of subsidiary
                                                                                          
          equity in income of investee
                                                                                          
          inventory
                                                                                          
          increase in severance pay liabilities
                                                                                          
          distributions from partnership
                                                                                          
          investment in severance pay fund
                                                                                          
          cash paid for acquisitions
                                                                                          
          contribution from (distributions to) parent
                                                                                          
          payments of short-term and long-term debt
                                                                                          
          deferred debt issue costs
                                                                                          
          cash and cash equivalents, beginning of period
                                                                                          
          cash and cash equivalents, end of period
                                                                                          
          accounts payable related to purchases of fixed assets
                                                                                          
          •