7Baggers

American States Water Company
(NYSE:AWR) 

AWR stock logo

American States Water Company, through its subsidiaries, provides water and electric services to residential, commercial, industrial, and other customers in the United States. It operates through three segments: Water, Electric, and Contracted Services. The company purchases, produces, distributes, ...

Founded: 1929
Full Time Employees: 841
Sector: Utilities
Industry: Utilities-Regulated Water

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    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 2015-12-31 2015-09-30 2015-06-30 2015-03-31 2014-12-31 2014-09-30 2014-06-30 2014-03-31 2013-12-31 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 2004-06-30 2004-03-31 2003-12-31 2003-09-30 2003-06-30 2003-03-31 2002-12-31 2002-09-30 2002-06-30 2002-03-31 
                                                                                                     
      operating revenues
                                                                                                     
      water
    113,110,000 110,091,000 132,323,000 119,697,000 102,003,000 92,678,000 124,043,000 110,424,000 90,265,000 87,622,000 116,231,000 116,908,000 112,712,000 75,041,000 100,799,000 90,856,000 73,906,000 77,682,000 102,768,000 91,633,000 75,029,000 73,438,000 98,701,000 87,074,000 71,424,000 71,718,000 95,249,000 88,140,000 64,723,000 66,424,000 87,689,000 76,733,000 64,412,000 67,275,000 91,919,000 80,734,000 66,404,000 64,944,000 90,617,000 81,058,000 66,312,000 72,153,000 97,273,000 87,581,000 71,504,000 72,983,000 96,700,000 86,232,000 70,757,000 72,897,000 93,932,000 84,069,000 69,233,000 68,451,000 90,604,000 80,886,000 65,957,000 65,573,000 89,756,000 80,151,000 64,326,000 79,274,000 82,634,000 72,816,000 57,874,000 63,671,000 78,297,000 74,157,000 56,794,000 61,112,000 69,365,000 65,370,000 52,089,000   60,826,000 50,327,000 53,005,000 64,962,000 53,122,000 48,149,000 49,919,000 60,539,000 53,551,000 41,497,000 45,862,000 62,455,000 53,576,000 38,742,000 43,957,000 57,574,000 46,207,000 39,425,000 43,339,000 55,866,000 48,765,000 39,091,000 
      electric
    18,657,000 15,955,000 13,332,000 12,928,000 15,002,000 21,697,000 9,040,000 8,703,000 12,205,000 11,144,000 8,956,000 8,828,000 12,904,000 10,958,000 8,919,000 8,217,000 11,892,000 10,134,000 8,564,000 8,108,000 11,539,000 10,089,000 8,288,000 7,679,000 10,968,000 9,515,000 11,996,000 7,408,000 10,629,000 8,802,000 7,875,000 7,841,000 9,832,000 7,861,000 7,994,000 7,612,000 10,502,000 9,351,000 8,146,000 7,701,000 10,573,000 9,235,000 7,946,000 7,889,000 10,969,000 6,989,000 8,614,000 8,328,000 10,456,000 10,429,000 8,849,000 8,397,000 10,734,000 9,298,000 8,549,000 8,373,000 10,813,000 9,100,000 8,746,000 7,710,000 10,724,000 9,060,000 7,917,000 7,845,000 10,979,000 7,839,000 6,563,000 5,888,000 8,632,000 6,670,000 6,743,000 6,208,000 8,803,000   6,255,000 8,869,000 7,452,000 6,444,000 7,027,000 8,346,000 7,119,000 6,544,000 6,091,000 7,470,000 6,310,000 6,208,000 5,449,000 7,627,000 6,229,000 5,906,000 5,353,000 7,004,000 6,724,000 5,529,000 3,839,000 5,206,000 
      contracted services
    37,424,000 38,232,000 37,061,000 30,441,000 31,008,000 28,723,000 28,699,000 36,201,000 32,781,000 26,414,000 26,509,000 31,664,000 35,807,000 39,368,000 25,266,000 23,534,000 22,772,000 28,808,000 25,423,000 28,673,000 30,492,000 40,673,000 26,699,000 26,525,000 26,685,000 31,760,000 27,251,000 29,099,000 26,381,000 35,779,000 28,618,000 22,327,000 20,484,000 29,044,000 24,505,000 24,849,000 21,904,000 32,505,000 25,043,000 23,195,000 16,642,000 28,727,000 27,756,000 19,148,000 18,460,000 29,906,000 33,013,000 21,081,000 20,732,000 26,590,000 28,133,000 28,229,000 30,585,000 34,679,000 34,368,000 25,052,000 29,878,000 20,568,000 21,395,000 21,968,000 19,257,000 15,366,000 20,749,000 14,815,000 21,430,000 14,800,000 16,641,000 13,508,000 14,183,000 16,420,000 9,153,000 8,735,000 8,050,000   12,165,000 13,074,000                     
      total operating revenues
    169,191,000 164,278,000 182,716,000 163,066,000 148,013,000 143,098,000 161,782,000 155,328,000 135,251,000 125,180,000 151,696,000 157,400,000 161,423,000 125,367,000 134,984,000 122,607,000 108,570,000 116,624,000 136,755,000 128,414,000 117,060,000 124,200,000 133,688,000 121,278,000 109,077,000 112,993,000 134,496,000 124,647,000 101,733,000 111,005,000 124,182,000 106,901,000 94,728,000 104,180,000 124,418,000 113,195,000 98,810,000 106,800,000 123,806,000 111,954,000 93,527,000 110,115,000 132,975,000 114,618,000 100,933,000 109,878,000 138,327,000 115,641,000 101,945,000 109,916,000 130,914,000 120,695,000 110,552,000 112,428,000 133,521,000 114,311,000 106,648,000 95,241,000 119,897,000 109,829,000 94,307,000 103,700,000 111,300,000 95,476,000 90,283,000 86,310,000 101,501,000 93,553,000 79,609,000 84,202,000 85,261,000 80,313,000 68,942,000   79,246,000 72,270,000 72,143,000 73,741,000 62,138,000 60,613,000     53,049,000 68,961,000           
      yoy
    14.31% 14.80% 12.94% 4.98% 9.44% 14.31% 6.65% -1.32% -16.21% -0.15% 12.38% 28.38% 48.68% 7.50% -1.30% -4.52% -7.25% -6.10% 2.29% 5.88% 7.32% 9.92% -0.60% -2.70% 7.22% 1.79% 8.31% 16.60% 7.39% 6.55% -0.19% -5.56% -4.13% -2.45% 0.49% 1.11% 5.65% -3.01% -6.90% -2.32% -7.34% 0.22% -3.87% -0.88% -0.99% -0.03% 5.66% -4.19% -7.79% -2.23% -1.95% 5.58% 3.66% 18.05% 11.36% 4.08% 13.09% -8.16% 7.72% 15.03% 4.46% 20.15% 9.65% 2.06% 13.41% 2.50% 19.05% 16.49% 15.47%   1.35% -4.60%   27.53% 19.23%                     
      qoq
    2.99% -10.09% 12.05% 10.17% 3.43% -11.55% 4.16% 14.84% 8.05% -17.48% -3.62% -2.49% 28.76% -7.12% 10.09% 12.93% -6.91% -14.72% 6.50% 9.70% -5.75% -7.10% 10.23% 11.19% -3.47% -15.99% 7.90% 22.52% -8.35% -10.61% 16.17% 12.85% -9.07% -16.27% 9.91% 14.56% -7.48% -13.74% 10.59% 19.70% -15.06% -17.19% 16.02% 13.56% -8.14% -20.57% 19.62% 13.43% -7.25% -16.04% 8.47% 9.17% -1.67% -15.80% 16.81% 7.19% 11.98% -20.56% 9.17% 16.46% -9.06% -6.83% 16.57% 5.75% 4.60% -14.97% 8.50% 17.52% -5.45% -1.24% 6.16% 16.49%    9.65% 0.18% -2.17% 18.67% 2.52%      -23.07%            
      operating expenses
                                                                                                     
      water purchased
    21,360,000 30,260,000 27,745,000 23,911,000 16,308,000 18,486,000 24,059,000 17,968,000 13,761,000 17,274,000 23,216,000 18,070,000 14,304,000 17,824,000 20,304,000 19,963,000 17,848,000 17,666,000 24,093,000 20,916,000 15,239,000 18,263,000 23,445,000 18,754,000 14,092,000 17,026,000 23,361,000 18,762,000 13,140,000 16,847,000 21,842,000 16,608,000 13,607,000 17,683,000 20,576,000 17,937,000 12,106,000 15,177,000 19,631,000 15,835,000 13,799,000 15,893,000 18,127,000 16,415,000 12,291,000 12,466,000 17,837,000 16,263,000 11,224,000 12,282,000 19,246,000 16,670,000 10,732,000 11,753,000 18,874,000 13,831,000 9,552,000 9,851,000 16,094,000 12,924,000 8,661,000 9,606,000 15,693,000 13,564,000 8,257,000 11,491,000 14,151,000 12,257,000 8,214,000 10,498,000 15,087,000 13,079,000 7,953,000   12,077,000 8,873,000 10,315,000 15,066,000 10,916,000 8,344,000 10,584,000 15,779,000 12,277,000 7,686,000 9,088,000 15,339,000 12,802,000 8,881,000 8,440,000 13,740,000 10,470,000 7,888,000 10,336,000 14,205,000 10,746,000 7,572,000 
      power purchased for pumping
    3,297,000 2,919,000 4,454,000 3,554,000 3,149,000 3,676,000 4,996,000 3,521,000 2,832,000 3,315,000 4,291,000 2,869,000 2,354,000 2,679,000 3,878,000 2,930,000 2,374,000 2,513,000 3,584,000 2,861,000 2,145,000 2,508,000 3,369,000 2,398,000 1,859,000 2,098,000 3,042,000 1,982,000 1,538,000 1,830,000 3,217,000 2,231,000 1,693,000 1,851,000 2,913,000 2,157,000 1,597,000 1,911,000 2,988,000 2,132,000 1,632,000 1,866,000 2,982,000 2,123,000 2,017,000 2,252,000 3,914,000 2,570,000 1,964,000 2,133,000 3,414,000 2,332,000 1,639,000 1,713,000 3,067,000 2,019,000 1,556,000 1,756,000 3,141,000 2,165,000 1,536,000 2,051,000 3,459,000 2,046,000 1,655,000 2,568,000 3,335,000 2,688,000 1,688,000 2,609,000 3,484,000 2,655,000 1,680,000   2,673,000 2,118,000 2,387,000 3,600,000 2,416,000 1,604,000 1,565,000 3,252,000 2,184,000 1,487,000 1,879,000 2,971,000 2,415,000 1,717,000 2,536,000 3,330,000 2,410,000 1,956,000 2,809,000 3,327,000 2,465,000 1,975,000 
      groundwater production assessment
    5,527,000 2,713,000 6,972,000 6,125,000 5,679,000 6,502,000 6,971,000 5,818,000 4,854,000 5,662,000 5,990,000 5,365,000 3,833,000 4,345,000 5,650,000 4,865,000 4,211,000 4,567,000 5,185,000 5,220,000 4,440,000 5,252,000 5,962,000 5,030,000 4,148,000 4,942,000 5,634,000 4,640,000 3,746,000 4,294,000 5,961,000 4,534,000 4,651,000 4,462,000 5,870,000 4,931,000 3,375,000 3,843,000 4,482,000 3,968,000 2,700,000 2,991,000 3,146,000 4,122,000 3,389,000 3,766,000 4,291,000 4,853,000 3,540,000 3,875,000 4,656,000 3,823,000 3,187,000 3,504,000 3,923,000 3,982,000 3,323,000 3,243,000 3,795,000 3,886,000 2,626,000 2,876,000 3,311,000 2,664,000 2,622,000 2,942,000 3,247,000 2,857,000 2,517,000 2,567,000 2,791,000 2,890,000 2,375,000   2,549,000 2,279,000 2,234,000 2,477,000 2,239,000 2,083,000 2,239,000 2,315,000 1,843,000 1,921,000 1,986,000 2,120,000 1,338,000 1,822,000 1,859,000 2,089,000 1,729,000 1,667,000 1,989,000 1,831,000 1,801,000 1,795,000 
      power purchased for resale
    4,792,000 5,288,000 3,288,000 3,466,000 6,068,000 3,328,000 2,467,000 1,503,000 4,332,000 3,437,000 2,383,000 2,469,000 4,986,000 5,853,000 2,673,000 1,347,000 5,166,000 3,037,000 2,875,000 2,130,000 3,198,000 3,296,000 2,117,000 1,967,000 3,043,000 3,298,000 2,403,000 2,391,000 3,704,000 3,151,000 2,647,000 2,384,000 3,408,000 2,873,000 2,439,000 2,308,000 3,100,000 2,906,000 2,394,000 2,216,000 2,871,000 3,031,000 2,299,000 2,566,000 2,499,000 2,579,000 2,383,000 1,988,000 2,699,000 3,498,000 3,386,000 2,828,000 3,680,000 3,395,000 2,854,000 2,680,000 3,191,000 3,807,000 3,038,000 2,854,000 3,875,000 3,583,000 2,950,000 2,876,000 3,669,000 3,695,000 2,793,000 2,403,000 3,962,000 3,437,000 3,345,000 2,595,000 4,239,000   2,915,000 4,281,000 3,913,000 2,659,000 3,248,000 4,563,000 3,316,000 3,075,000 2,710,000 4,137,000 4,078,000 3,107,000 2,538,000 4,829,000 3,815,000 3,382,000 2,814,000 3,856,000 4,375,000 3,645,000 5,512,000 4,816,000 
      supply cost balancing accounts
    -318,000 -2,795,000 -367,000 -136,000 -1,716,000 -4,341,000 -381,000 3,436,000 -608,000 -3,008,000 723,000 2,837,000 11,566,000 -5,840,000 640,000 -457,000 -6,343,000 -3,462,000 -2,446,000 -3,086,000 -2,427,000 -5,197,000 -2,639,000 -1,802,000 -2,165,000 -4,181,000 -2,680,000 1,207,000 -1,372,000 -4,539,000 -5,212,000 -2,029,000 -3,869,000 -6,276,000 -4,621,000 -5,293,000 -1,749,000 -2,061,000 -4,213,000 -2,517,000 -3,415,000 -668,000 4,824,000 1,816,000 1,813,000 2,455,000 3,179,000 -106,000 818,000 223,000 -1,003,000 -377,000 1,371,000 2,149,000 1,960,000 4,163,000 3,437,000 4,374,000 5,050,000 4,245,000 5,079,000 5,902,000 6,219,000 4,686,000 3,815,000 768,000 4,806,000 3,332,000 3,528,000          244,000  487,000 260,500 514,000 -550,000 1,078,000 -647,000 1,016,000 3,598,000 221,000 4,481,000 650,000 501,000 958,000 -1,560,750 -428,000 -3,489,000 -2,326,000 
      other operation
    11,268,000 12,459,000 11,782,000 12,310,000 10,490,000 9,941,000 11,021,000 10,733,000 9,623,000 10,010,000 10,429,000 9,716,000 10,116,000 10,067,000 9,696,000 9,665,000 8,667,000 8,573,000 9,414,000 8,534,000 8,217,000 8,663,000 8,128,000 7,959,000 8,486,000 8,210,000 8,267,000 7,708,000 8,571,000 7,525,000 8,355,000 7,782,000 7,988,000 8,005,000 7,657,000 8,172,000 6,160,000 6,926,000 7,448,000 6,917,000 6,966,000 7,851,000 7,056,000 7,362,000 6,160,000 7,298,000 6,958,000 7,085,000 6,947,000 8,609,000 7,185,000                                               
      administrative and general
    28,154,000 25,301,000 25,413,000 25,222,000 26,875,000 27,907,000 24,200,000 23,487,000 25,347,000 22,241,000 20,982,000 21,503,000 23,547,000 21,160,000 21,594,000 20,464,000 22,972,000 20,609,000 20,255,000 20,630,000 22,053,000 19,623,000 20,644,000 20,398,000 22,950,000 21,207,000 20,626,000 19,529,000 21,672,000 20,519,000 21,570,000 20,213,000 20,293,000 19,128,000 21,790,000 20,458,000 20,286,000 19,165,000 19,768,000 21,288,000 20,773,000 20,547,000 19,272,000 20,471,000 19,527,000 18,554,000 20,178,000 19,407,000 20,184,000 21,188,000 20,083,000                                               
      depreciation and amortization
    12,684,000 12,587,000 11,934,000 11,681,000 11,582,000 11,306,000 10,849,000 10,770,000 10,722,000 10,758,000 10,184,000 10,258,000 11,203,000 10,913,000 10,117,000 10,171,000 10,114,000 10,440,000 9,826,000 9,770,000 9,560,000 9,660,000 9,348,000 9,031,000 8,811,000 8,904,000 9,006,000 6,655,000 10,832,000 10,631,000 10,118,000 10,010,000 9,666,000 9,847,000 9,854,000 9,647,000 9,683,000 9,972,000 9,486,000 9,601,000 9,791,000 10,437,000 10,512,000 10,536,000 10,548,000 9,469,000 10,549,000 10,525,000 10,530,000 10,753,000 9,753,000 9,768,000 9,816,000 10,258,000 10,230,000 10,407,000 10,490,000 9,520,000 9,554,000 9,538,000 9,737,000 12,284,000 8,397,000 8,365,000 8,842,000 8,409,000 8,400,000 8,387,000 8,361,000 8,077,000 7,882,000 7,810,000 7,793,000   7,088,000 7,089,000 6,546,000 6,634,000 6,610,000 6,483,000 5,810,000 4,705,000 5,696,000 5,635,000 4,984,000 5,589,000 5,073,000 5,177,000 4,956,000 4,944,000 4,945,000 4,947,000 4,574,000 4,622,000   
      maintenance
    5,700,000 5,906,000 5,481,000 6,129,000 4,147,000 9,776,000 3,719,000 3,535,000 3,225,000 3,192,000 4,097,000 3,779,000 3,150,000 3,272,000 3,408,000 3,572,000 3,140,000 3,873,000 2,979,000 3,267,000 2,662,000 3,478,000 4,246,000 4,094,000 3,884,000 5,738,000 4,109,000 3,053,000 2,566,000 4,761,000 3,422,000 3,670,000 3,829,000 4,884,000 3,222,000 3,606,000 3,464,000 4,562,000 4,203,000 3,635,000 4,070,000 4,810,000 4,393,000 4,205,000 3,477,000 3,886,000 4,390,000 4,327,000 3,489,000 4,259,000 4,666,000 4,913,000 3,934,000 4,472,000 4,232,000 3,852,000 3,331,000 4,662,000 4,346,000 4,623,000 3,726,000 5,267,000 4,314,000 4,375,000 4,296,000 5,517,000 4,052,000 3,887,000 4,073,000 3,762,000 4,027,000 4,770,000 3,772,000   4,353,000 2,973,000 3,141,000 3,395,000 3,246,000 2,755,000 3,517,000 3,080,000 2,522,000 2,466,000 4,033,000 2,593,000 2,609,000 2,327,000 3,502,000 2,181,000 2,299,000 1,950,000 3,207,000 2,546,000 2,194,000 1,892,000 
      property and other taxes
    8,023,000 6,330,000 7,771,000 6,955,000 6,952,000 6,929,000 7,063,000 6,612,000 6,487,000 6,162,000 6,034,000 5,555,000 6,295,000 5,647,000 5,942,000 5,452,000 5,853,000 5,257,000 6,052,000 5,273,000 5,940,000 6,101,000 5,693,000 5,246,000 5,159,000 5,042,000 5,234,000 4,870,000 4,896,000 4,541,000 4,692,000 4,372,000 4,799,000 4,519,000 4,475,000 4,345,000 4,566,000 3,938,000 4,317,000 4,168,000 4,378,000 3,974,000 4,326,000 4,060,000 4,276,000 4,073,000 4,359,000 3,965,000 4,325,000 3,861,000 4,108,000 3,748,000 4,148,000 3,682,000 3,878,000 3,716,000 4,105,000 3,570,000 3,682,000 3,406,000 3,552,000 3,696,000 3,566,000 3,281,000 3,683,000 3,401,000 3,555,000 2,712,000 3,400,000 3,092,000 3,461,000 2,839,000 2,920,000   2,843,000 2,930,000 2,513,000 2,656,000 2,475,000 2,547,000                 
      asus construction
    17,333,000 18,273,000 16,510,000 12,890,000 12,933,000 10,895,000 11,750,000 16,197,000 15,702,000 11,358,000 11,616,000 16,034,000 18,904,000 21,908,000 10,742,000 10,318,000 10,203,000 13,999,000 12,154,000 15,052,000 15,704,000 23,236,000 13,573,000 12,487,000 13,115,000 16,002,000 12,894,000 14,532,000 12,245,000 18,738,000 13,620,000 11,576,000 9,972,000 15,249,000 11,693,000 11,412,000 11,484,000 18,369,000 13,685,000 12,937,000 8,729,000 17,499,000 14,853,000 10,412,000 10,046,000 17,717,000 20,430,000 13,764,000 13,457,000 17,574,000 19,256,000                                               
      total operating expenses
    117,820,000 119,241,000 120,983,000 112,107,000 102,467,000 104,405,000 106,714,000 103,580,000 96,277,000 90,301,000 99,945,000 98,455,000 110,258,000 97,753,000 94,644,000 88,290,000 84,205,000 86,607,000 93,971,000 90,567,000 86,731,000 94,923,000 93,881,000 85,562,000 83,378,000 88,269,000 91,772,000 85,217,000 81,538,000 88,256,000 90,207,000 81,333,000 76,037,000 82,225,000 85,851,000 71,379,000 74,072,000 84,708,000 84,189,000 80,180,000 72,294,000 88,231,000 91,790,000 84,088,000 76,043,000 84,496,000 98,432,000 84,641,000 79,177,000 88,265,000 94,750,000 87,401,000 82,589,000 91,306,000 97,041,000 84,186,000 83,281,000 79,691,000 87,477,000 80,690,000 76,312,000 87,079,000 94,403,000 74,326,000 70,706,000 75,203,000 79,046,000 69,039,000 68,191,000 76,582,000 72,118,000 60,732,000 54,480,000   61,789,000 55,419,000 58,734,000 58,705,000 48,036,000 46,553,000 47,735,000 56,732,000 49,965,000 41,321,000 45,774,000 56,295,000 48,745,000 41,101,000         
      operating income
    51,371,000 45,037,000 61,733,000 50,959,000 45,546,000 38,693,000 55,068,000 51,748,000 38,974,000 34,879,000 51,751,000 58,945,000 51,165,000 27,614,000 40,340,000 34,317,000 24,365,000 30,017,000 42,784,000 37,847,000 30,329,000 29,277,000 39,807,000 35,716,000 25,699,000 24,724,000 42,724,000 39,430,000 20,195,000 22,749,000 33,975,000 25,568,000 18,691,000 21,955,000 38,567,000 41,816,000 24,738,000 22,092,000 39,617,000 31,774,000 21,233,000 21,884,000 41,185,000 30,530,000 24,890,000 25,382,000 39,895,000 31,000,000 22,768,000 21,651,000 36,164,000 33,294,000 27,963,000 21,122,000 36,480,000 30,125,000 23,367,000 15,550,000 32,420,000 29,139,000 17,995,000 16,621,000 16,897,000 21,150,000 19,577,000 11,107,000 22,455,000 24,514,000 11,418,000 7,620,000 13,143,000 19,581,000 14,462,000   17,457,000 16,851,000 13,409,000 15,036,000 14,102,000 14,060,000 10,101,000 11,339,000 10,531,000 8,473,000 7,275,000 12,666,000 10,599,000 5,550,000 6,452,000 12,179,000 7,419,000 7,555,000 7,980,000 11,864,000 9,886,000 7,918,000 
      yoy
    12.79% 16.40% 12.10% -1.52% 16.86% 10.93% 6.41% -12.21% -23.83% 26.31% 28.29% 71.77% 109.99% -8.01% -5.71% -9.33% -19.66% 2.53% 7.48% 5.97% 18.02% 18.42% -6.83% -9.42% 27.25% 8.68% 25.75% 54.22% 8.05% 3.62% -11.91% -38.86% -24.44% -0.62% -2.65% 31.60% 16.51% 0.95% -3.81% 4.07% -14.69% -13.78% 3.23% -1.52% 9.32% 17.23% 10.32% -6.89% -18.58% 2.50% -0.87% 10.52% 19.67% 35.83% 12.52% 3.38% 29.85% -6.44% 91.87% 37.77% -8.08% 49.64% -24.75% -13.72% 71.46% 45.76% 70.85% 25.19% -21.05%   12.17% -14.18%   23.79% 19.85% 32.75% 32.60% 33.91% 65.94% 38.85% -10.48% -0.64% 52.67% 12.76% 4.00% 42.86% -26.54% -19.15% 2.66% -24.95% -4.58%     
      qoq
    14.06% -27.05% 21.14% 11.88% 17.71% -29.74% 6.42% 32.78% 11.74% -32.60% -12.20% 15.21% 85.29% -31.55% 17.55% 40.85% -18.83% -29.84% 13.04% 24.79% 3.59% -26.45% 11.45% 38.98% 3.94% -42.13% 8.35% 95.25% -11.23% -33.04% 32.88% 36.79% -14.87% -43.07% -7.77% 69.04% 11.98% -44.24% 24.68% 49.64% -2.97% -46.86% 34.90% 22.66% -1.94% -36.38% 28.69% 36.16% 5.16% -40.13% 8.62% 19.06% 32.39% -42.10% 21.10% 28.92% 50.27% -52.04% 11.26% 61.93% 8.27% -1.63% -20.11% 8.03% 76.26% -50.54% -8.40% 114.70% 49.84% -42.02% -32.88% 35.40%    3.60% 25.67% -10.82% 6.62% 0.30% 39.19% -10.92% 7.67% 24.29% 16.47% -42.56% 19.50% 90.97% -13.98% -47.02% 64.16% -1.80% -5.33% -32.74% 20.01% 24.85%  
      operating margin %
    30.36% 27.42% 33.79% 31.25% 30.77% 27.04% 34.04% 33.32% 28.82% 27.86% 34.11% 37.45% 31.70% 22.03% 29.89% 27.99% 22.44% 25.74% 31.29% 29.47% 25.91% 23.57% 29.78% 29.45% 23.56% 21.88% 31.77% 31.63% 19.85% 20.49% 27.36% 23.92% 19.73% 21.07% 31.00% 36.94% 25.04% 20.69% 32.00% 28.38% 22.70% 19.87% 30.97% 26.64% 24.66% 23.10% 28.84% 26.81% 22.33% 19.70% 27.62% 27.59% 25.29% 18.79% 27.32% 26.35% 21.91% 16.33% 27.04% 26.53% 19.08% 16.03% 15.18% 22.15% 21.68% 12.87% 22.12% 26.20% 14.34% 9.05% 15.42% 24.38% 20.98% NaN% NaN% 22.03% 23.32% 18.59% 20.39% 22.69% 23.20% Infinity% Infinity% Infinity% Infinity% 13.71% 18.37% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% 
      other income and expenses
                                                                                                     
      interest expense
    -12,107,000 -10,875,000 -11,711,000 -12,108,000 -12,082,000 -11,165,000 -13,225,000 -13,137,000 -12,855,000 -10,862,000 -11,691,000 -10,728,000 -9,481,000 -7,781,000 -7,331,000 -6,309,000 -5,606,000 -4,991,000 -5,553,000 -6,032,000 -6,258,000 -4,998,000 -6,161,000 -5,322,000 -6,050,000 -5,708,000 -6,279,000 -6,282,000 -6,317,000 -5,514,000 -5,948,000 -6,048,000 -5,923,000 -4,976,000 -5,775,000 -5,926,000 -5,905,000 -5,036,000 -5,730,000 -5,603,000 -5,623,000 -4,849,000 -5,484,000 -5,527,000 -5,228,000 -4,693,000 -5,519,000 -5,778,000 -5,627,000 -5,017,000 -5,852,000 -5,768,000                                              
      interest income
    976,000 1,075,000 1,064,000 1,498,000 2,013,000 1,972,000 1,739,000 2,093,000 2,070,000 1,624,000 2,125,000 1,803,000 1,864,000 939,000 667,000 437,000 283,000 357,000 333,000 348,000 455,000 437,000 316,000 490,000 558,000 605,000 826,000 876,000 942,000 1,765,000 641,000 636,000 536,000 590,000 321,000 620,000 259,000 189,000 206,000 190,000 172,000 126,000 118,000 102,000 112,000 468,000 224,000 123,000 112,000 195,000 185,000 140,000 187,000 204,000 419,000 495,000 215,000 359,000 202,000 161,000 137,000 1,421,000 166,000 158,000 661,000 276,000 173,000 296,000 202,000 408,000 293,000 775,000 361,000   586,000 566,000 175,000 695,000 963,000 899,000                 
      other
    -420,000 1,238,000 3,006,000 3,576,000 -171,000 1,297,000 2,308,000 1,519,000 2,342,000 2,883,000 -1,073,000 1,705,000 1,611,000 2,495,000 338,000 -2,289,000 -419,000 2,136,000 467,000 1,875,000 656,000 2,465,000 1,613,000 3,009,000 -2,234,000 1,203,000 140,000 591,000 1,342,000 -1,084,000 1,223,000 579,000 42,000 603,000 401,000 589,000 464,000 125,000 254,000 437,000 181,000 352,000 -346,000 77,000 273,000 308,000 47,000 271,000 125,000 432,000 247,000 84,000 342,000 -4,000 219,000  229,000         131,000 38,000 82,000  -20,000  7,000 114,000   63,000 69,000 11,686,000 2,335,000 1,989,000 4,118,000 798,000 988,000 854,000 827,000 877,000 298,000 319,000 282,000 265,000 245,000 257,000 247,000 243,000 217,000 198,000 188,000 
      total other income and expenses
    -11,551,000 -8,562,000 -7,641,000 -7,034,000 -10,240,000 -7,896,000 -9,178,000 -9,525,000 -8,443,000 -6,355,000 -10,639,000 -7,220,000 -6,006,000 -4,347,000 -6,326,000 -8,161,000 -5,742,000 -2,498,000 -4,753,000 -3,809,000 -5,147,000 -2,096,000 -4,232,000 -1,823,000 -7,726,000 -3,900,000 -5,313,000 -4,815,000 -4,033,000 -4,833,000 -4,084,000 -4,833,000 -5,345,000 -3,783,000 -5,053,000 -4,717,000 -5,182,000 -4,722,000 -5,270,000 -4,976,000 -5,270,000 -4,371,000 -5,712,000 -5,348,000 -4,843,000 -3,917,000 -5,248,000 -5,384,000 -5,390,000 -4,390,000 -5,420,000 -5,544,000                                              
      income before income tax expense
    39,820,000 36,475,000 54,092,000 43,925,000 35,306,000 30,797,000 45,890,000 42,223,000 30,531,000 28,524,000 41,112,000 51,725,000 45,159,000 23,267,000 34,014,000 26,156,000 18,623,000 27,519,000 38,031,000 34,038,000 25,182,000 27,181,000 35,575,000 33,893,000 17,973,000 20,824,000 37,411,000 34,615,000 16,162,000 17,916,000 29,891,000 20,735,000 13,346,000 18,172,000 33,514,000 37,099,000 19,556,000                                                             
      income tax expense
    9,872,000 7,734,000 12,925,000 10,235,000 8,462,000 2,362,000 10,056,000 10,359,000 7,396,000 8,096,000 9,547,000 13,204,000 10,752,000 4,638,000 8,360,000 6,205,000 4,461,000 7,169,000 9,878,000 7,462,000 5,914,000 6,970,000 9,045,000 8,281,000 3,901,000 4,124,000 9,405,000 7,831,000 3,310,000 4,127,000 6,939,000 4,387,000 2,564,000 5,304,000 12,508,000 14,307,000 6,855,000 6,158,000 12,708,000 10,056,000 5,813,000 5,905,000 14,394,000 9,534,000 7,898,000 7,953,000 13,476,000 10,262,000 6,357,000 5,481,000 9,905,000 11,148,000 9,249,000 6,074,000 12,436,000 9,809,000 7,626,000 4,508,000 10,641,000 9,414,000 5,513,000 4,730,000 5,878,000 6,499,000 6,063,000 2,620,000 7,107,000 7,734,000 1,364,000 -88,000 3,426,000 5,786,000 4,255,000   5,214,000 5,006,000 3,620,000 4,809,000 3,449,000 3,804,000                 
      net income
    29,948,000 28,741,000 41,167,000 33,690,000 26,844,000 28,435,000 35,834,000 31,864,000 23,135,000 20,428,000 31,565,000 38,521,000 34,407,000 18,629,000 25,654,000 19,951,000 14,162,000 20,350,000 28,153,000 26,576,000 19,268,000 20,211,000 26,530,000 25,612,000 14,072,000 16,700,000 28,006,000 26,784,000 12,852,000 13,789,000 22,952,000 16,348,000 10,782,000 12,868,000 21,006,000 22,792,000 12,701,000 11,212,000 21,639,000 16,742,000 10,150,000 11,608,000 21,079,000 15,648,000 12,149,000 13,512,000 21,171,000 15,354,000 11,021,000 11,780,000 20,839,000 16,602,000 13,465,000 10,291,000 18,664,000 15,078,000 10,115,000 6,709,000 15,599,000 15,962,000 7,589,000 9,080,000 6,652,000 8,975,000 8,490,000 3,402,000 9,698,000 11,499,000 4,932,000 2,866,000 4,552,000 9,283,000 5,304,000   7,322,000 6,984,000 5,339,000 5,573,000 6,269,000 5,899,000 5,033,000 12,234,000 5,735,000 3,764,000 2,667,000 8,018,000 6,710,000 1,146,000 -1,805,000 7,796,000 2,911,000 2,990,000 3,458,000 7,639,000 5,435,000 3,807,000 
      yoy
    11.56% 1.08% 14.88% 5.73% 16.03% 39.20% 13.52% -17.28% -32.76% 9.66% 23.04% 93.08% 142.95% -8.46% -8.88% -24.93% -26.50% 0.69% 6.12% 3.76% 36.92% 21.02% -5.27% -4.38% 9.49% 21.11% 22.02% 63.84% 19.20% 7.16% 9.26% -28.27% -15.11% 14.77% -2.93% 36.14% 25.13% -3.41% 2.66% 6.99% -16.45% -14.09% -0.43% 1.91% 10.24% 14.70% 1.59% -7.52% -18.15% 14.47% 11.65% 10.11% 33.12% 53.39% 19.65% -5.54% 33.29% -26.11% 134.50% 77.85% -10.61% 166.90% -31.41% -21.95% 72.14% 18.70% 113.05% 23.87% -7.01%   26.78% -24.05%   16.80% 18.39% 6.08% -54.45% 9.31% 56.72% 88.71% 52.58% -14.53% 228.45% -247.76% 2.85% 130.50% -61.67% -152.20% 2.06% -46.44% -21.46%     
      qoq
    4.20% -30.18% 22.19% 25.50% -5.60% -20.65% 12.46% 37.73% 13.25% -35.28% -18.06% 11.96% 84.70% -27.38% 28.59% 40.88% -30.41% -27.72% 5.93% 37.93% -4.67% -23.82% 3.58% 82.01% -15.74% -40.37% 4.56% 108.40% -6.80% -39.92% 40.40% 51.62% -16.21% -38.74% -7.84% 79.45% 13.28% -48.19% 29.25% 64.95% -12.56% -44.93% 34.71% 28.80% -10.09% -36.18% 37.89% 39.32% -6.44% -43.47% 25.52% 23.30% 30.84% -44.86% 23.78% 49.07% 50.77% -56.99% -2.27% 110.33% -16.42% 36.50% -25.88% 5.71% 149.56% -64.92% -15.66% 133.15% 72.09% -37.04% -50.96% 75.02%    4.84% 30.81% -4.20% -11.10% 6.27% 17.21% -58.86% 113.32% 52.36% 41.13% -66.74% 19.49% 485.51% -163.49% -123.15% 167.81% -2.64% -13.53% -54.73% 40.55% 42.76%  
      net income margin %
    17.70% 17.50% 22.53% 20.66% 18.14% 19.87% 22.15% 20.51% 17.11% 16.32% 20.81% 24.47% 21.31% 14.86% 19.01% 16.27% 13.04% 17.45% 20.59% 20.70% 16.46% 16.27% 19.84% 21.12% 12.90% 14.78% 20.82% 21.49% 12.63% 12.42% 18.48% 15.29% 11.38% 12.35% 16.88% 20.14% 12.85% 10.50% 17.48% 14.95% 10.85% 10.54% 15.85% 13.65% 12.04% 12.30% 15.31% 13.28% 10.81% 10.72% 15.92% 13.76% 12.18% 9.15% 13.98% 13.19% 9.48% 7.04% 13.01% 14.53% 8.05% 8.76% 5.98% 9.40% 9.40% 3.94% 9.55% 12.29% 6.20% 3.40% 5.34% 11.56% 7.69% NaN% NaN% 9.24% 9.66% 7.40% 7.56% 10.09% 9.73% Infinity% Infinity% Infinity% Infinity% 5.03% 11.63% Infinity% Infinity% -Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% 
      weighted-average number of common shares outstanding
    39,111,000  38,567,000 38,509,000 38,253,000  37,564,000 37,309,000 37,030,000  36,977,000 36,976,000 36,968,000  36,958,000 36,956,000 36,944,000  36,933,000 36,916,000 36,898,000  36,886,000 36,884,000 36,860,000  36,835,000 36,804,000 36,773,000  36,737,000 36,733,000 36,712,000  36,659,000 36,624,000 36,590,000  36,561,000 36,554,000 36,521,000  37,063,000 37,702,000 38,205,000  38,704,000 38,781,000 38,747,000  38,696,000 19,306,000 19,265,000                     17,121,000        16,778,000    15,633,000    15,200,000    15,144,000    
      basic earnings per common share
    760 730 1,060 870 700 740 950 850 620 550 850 1,040 930 510 690 540 380 550 760 720 520 550 720 690 380 450 760 720 350 370 620 440 290 350 570 620 350 310 590 460 280 320 570 410 320 350 540 390 280 327.5 540 850 690            460 180 520 640 280 170 260 540 310   420 400 310 320 360 350 290 720 340 220 150 520 440 80 -120 510 190 200 230 500 360 380 
      weighted-average number of diluted shares
    39,210,000 38,673,000 38,702,000 38,642,000 38,354,000 37,583,000 37,683,000 37,418,000 37,107,000 37,077,000 37,071,000 37,067,000 37,047,000 37,039,000 37,042,000 37,039,000 37,019,000 37,010,000 37,025,000 37,007,000 36,993,000 36,995,000 37,002,000 37,000,000 36,969,000 36,964,000 36,996,000 36,963,000 36,951,000 36,936,000 36,950,000 36,912,000 36,874,000 36,844,000 36,856,000 36,825,000 36,782,000 36,750,000 36,762,000 36,752,000 36,697,000 37,614,000 37,266,000 37,909,000 38,408,000 38,880,000 38,930,000 39,001,000 38,944,000 38,869 38,923,000 19,346,000 19,311,000 19,131 19,103 18,945 18,973 18,837 18,852 18,738 18,778 18,736 18,734 18,720    17,987,000 17,440,000  17,404,000      17,114,000      16,887,000 16,834,000 16,805,000  15,338,000 15,269,000 15,255,000  15,244,000 15,247,000 15,194,000  15,170,000 15,386,000 10,171,000 
      fully diluted earnings per common share
    760 657.5 1,060 870 700 605 950 850 620 705 850 1,040 930 402.5 690 540 380 500 760 720 520 447.5 720 690 380 457.5 760 720 350 337.5 620 440 290 382.5 570 620 340 330 590 450 280 322.5 560 410 320 305 540 390 280 327.5 530 850 690                                             
      dividends paid per common share
    504 -1,433.061 504 465.5 465.5 -1,323.709 465.5 430 430 -1,223.345 430 397.5 397.5 -1,125.975 397.5 365 365 -1,033.6 365 335                 242 -671.086 224 224 224 162.5 224 213 213 154.5 213 202.5 202.5 139.375 202.5 355                                              
      dividends declared per common share
                        335 236.25 335 305 305 213.75 305 275 275 196.25 275 255 255 184.75 255 242                 355 0.355 0.355 0.28 0.28 0.28 0.28 0.28 0.26 0.26 0.26 0.26 0.26 1,009.25 0.25 0.25 0.25 999.25 0.25 0.25 0.25   0.235 0.235 909.325 0.225 0.225 0.225 899.325 0.225 0.225 0.225 887.337 0.221 0.221 0.221 883.337 0.221 0.221 0.221 871.35 0.22 0.22 0.325 
      gain on sale of assets
                         -2,250 -5,000  -4,000 -17,000 -124,000 -112,000  -42,000 -25,000 -18,000   -17,000 -8,301,000                                                              
      income from operations before income tax expense
                                         17,370,000 34,347,000 26,798,000 15,963,000 17,513,000 35,473,000 25,182,000 20,047,000 21,465,000 34,647,000 25,616,000 17,378,000 20,302,000 30,744,000 27,750,000 22,714,000            14,553,000 6,022,000 16,805,000 19,233,000 6,296,000 2,778,000 7,978,000 15,069,000 9,559,000   12,536,000 11,990,000 8,959,000 10,382,000 9,718,000 9,703,000                 
      net gain on sale of property
                                                 -19,000 -36,000   10,000                                                
      other operation expenses
                                                       6,519,000 5,454,000 8,119,000 7,394,000 6,851,000 7,426,000 7,392,000 7,586,000 6,946,000 6,917,000 7,450,000 7,788,000 7,262,000 6,839,000 7,495,000 7,663,000                               
      administrative and general expenses
                                                       18,113,000 17,907,000 18,817,000 17,362,000 17,792,000 16,585,000 19,270,000 18,585,000 18,305,000 18,984,000 25,657,000 26,282,000 16,569,000 18,863,000 20,740,000 17,018,000 15,522,000 16,865,000 16,639,000 16,307,000 14,943,000 14,827,000   13,664,000 13,007,000 12,482,000 12,614,000 10,902,000 10,832,000 12,435,000 10,074,000 11,495,000 10,129,000 10,643,000 10,591,000 11,497,000 9,079,000 6,254,000 10,058,000 11,890,000 7,524,000 5,719,000 7,848,000 8,879,000 7,564,000 
      asus construction expenses
                                                       19,064,000 20,733,000 23,444,000 23,332,000 14,896,000 20,285,000 12,246,000 12,606,000 11,926,000  7,306,250 12,424,000 8,633,000  6,385,000 9,266,000   3,356,500 5,117,000 4,434,000                          
      income from continuing operations before income tax expense
                                                         16,365,000 31,100,000 24,887,000 17,741,000 11,218,000 26,258,000 22,142,000 12,468,000 12,992,000 11,547,000 15,369,000                                  
      income from continuing operations
                                                         10,291,000 18,664,000 15,078,000 10,115,000 6,710,000 15,617,000 12,728,000 6,955,000 8,262,000 5,669,000 8,870,000                                  
      loss from discontinued operations, net of tax
                                                                                                     
      income from discontinued operations
                                                             50  170 30                                     
      fully diluted earnings per share
                                                                    0.45 0.363 0.52 0.64 0.28 0.275 0.26 0.53 0.3   0.42 0.4 0.258 0.32 0.36 0.35 0.323 0.72 0.34 0.22 0.26 0.52 0.44 0.08 0.225 0.51 0.19 0.2 0.278 0.5 0.35 0.37 
      weighted-average number of shares outstanding
     38,550,000    37,464,000    36,976,000    36,955,000    36,921,000    36,880,000    36,814,000    36,733,000    36,638,000    36,552,000    37,389,000    38,658,000    38,639    18,999 19,059 18,882 18,831 18,693 18,701 18,668 18,648 18,585 18,595 18,576    17,861,000 17,312,000  17,268,000      17,055,000      16,782,000 16,773,000 16,761,000  15,318,000 15,248,000 15,224,000  15,202,000 15,201,000 15,188,000  15,154,000 15,131,000 10,080,000 
      income from discontinued operations, net of tax
                                                             -1,000  3,234,000 634,000 818,000 983,000 105,000                                  
      net loss on sale of property
                                                                 500  5,000                                  
      construction expenses
                                                                11,619,000    8,168,000   7,829,000 8,445,000    3,875,000   8,260,000 9,069,000                     
      other — net
                                                                80,000    64,000                                 
      weighted average number of shares outstanding
                                                                    18,546,000  18,502,000     17,248,000 17,239,000   17,094,000   17,003,000 16,881,000 16,806,000                 
      weighted average number of diluted shares
                                                                    18,666,000  18,645,000     17,325,000 17,357,000   17,146,000   17,057,000 16,947,000 16,909,000                 
      unrealized loss on purchased power contracts
                                                                          3,741,000     236,000  1,185,000 2,807,000 923,000 2,155,000   -459,000   224,000 76,000 -557,000  420,000  283,000     
      loss on settlement for removal of wells
                                                                      760,000                               
      unrealized gain on purchased power contracts
                                                                                        -3,015,000 -64,250    -213,500  -1,557,000      
      other operating expenses
                                                                       7,165,000 7,153,000 7,661,000 7,366,000 7,053,000 7,996,000   6,559,000 6,597,000 6,870,000 6,677,000 5,886,000 4,700,000 6,065,000 4,850,000 5,218,000 5,069,000 5,461,000 4,818,000 5,283,000 4,437,000 4,333,000 4,805,000 5,086,000 4,040,000 4,172,000 4,883,000 4,152,000 3,776,000 
      gain on settlement for removal of wells
                                                                                        -760,000             
      operating revenues - sum
                                                                                     44,590,250 68,071,000 60,496,000 49,794,000   59,344,000 46,651,000 40,554,500 63,725,000 51,817,000 46,676,000 39,724,750 61,612,000 52,802,000 44,485,000 
      taxes on income
                                                                                     3,363,000 10,558,000 4,808,000 3,216,000 1,670,000 5,692,000 5,086,000 942,000 1,467,000 3,915,000 1,790,000 1,995,000 594,000 5,207,000 4,135,000 3,013,000 
      other taxes
                                                                                     1,760,250 2,548,000 2,221,000 2,272,000 1,641,500 2,235,000 2,105,000 2,226,000 1,527,500 2,032,000 2,021,000 2,057,000 1,491,750 2,062,000 1,983,000 1,922,000 
      other income
                                                                                       -121,000 -121,000 -1,131,000 -160,000 851,000      81,500 157,000 -87,000 256,000 
      taxes on other income
                                                                                     -20,000 84,000 69,000 72,000 63,000 76,000 -313,000          
      total other income
                                                                                       -52,000 -49,000 -70,000 -84,000 538,000 -83,000         
      interest charges
                                                                                                 3,278,250 4,382,000 4,364,000 4,367,000 
      interest on long-term debt
                                                                                     4,636,000 4,092,000 4,054,000 4,052,000 4,032,000 4,047,000 4,052,000 4,050,000 4,108,000 4,229,000 4,220,000 4,255,000     
      other interest and amortization of debt expense
                                                                                       690,000 608,000 506,000 517,000 375,000 271,000 347,000 282,000 319,000 310,000     
      total interest charges
                                                                                     5,154,000  4,744,000 4,660,000 4,538,000 4,564,000 4,427,000 4,321,000         
      gain on sale of water rights
                                                                                           -5,675,000          
      other income — net of taxes
                                                                                            -83,000         
      other income - net
                                                                                             39,750 128,000 31,000      
      dividends on preferred shares
                                                                                                 -7,250  -8,000 -21,000 
      earnings available for common shareholders
                                                                                             -1,805,000 7,796,000 2,911,000 2,990,000 3,458,000 7,639,000 5,427,000 3,786,000 
      income before interest charges
                                                                                                7,555,000 8,044,000 12,021,000 9,799,000 8,174,000 
      operating expenses - sum
                                                                                                 32,307,750 49,748,000 42,916,000 36,567,000 
      depreciation
                                                                                                   4,538,000 4,568,000 
    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 2015-12-31 2015-09-30 2015-06-30 2015-03-31 2014-12-31 2014-09-30 2014-06-30 2014-03-31 2013-12-31 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 2004-06-30 2004-03-31 2003-12-31 2003-09-30 2003-06-30 2003-03-31 2002-12-31 2002-09-30 2002-06-30 2002-03-31 
                                                                                                       
        property, plant and equipment
                                                                                                       
        regulated utility plant, at cost
      2,941,280,000  2,849,671,000 2,807,586,000 2,744,705,000  2,638,276,000 2,577,968,000 2,525,055,000  2,433,884,000 2,391,596,000 2,357,966,000  2,284,066,000 2,242,589,000 2,205,801,000  2,144,543,000 2,112,249,000 2,080,048,000  2,004,446,000 1,975,085,000 1,946,662,000  1,924,183,000 1,898,157,000 1,867,878,000  1,795,500,000 1,766,543,000 1,740,785,000  1,699,631,000 1,672,559,000 1,647,599,000  1,672,831,000 1,643,084,000 1,607,283,000  1,547,330,000 1,523,161,000 1,506,244,000  1,480,087,000 1,463,130,000 1,449,437,000  1,425,214,000 1,393,711,000 1,367,474,000  1,346,064,000 1,324,583,000 1,312,620,000  1,290,874,000 1,274,724,000 1,249,954,000  1,223,760,000 1,210,699,000 1,250,145,000                                 
        non-utility property, at cost
      51,678,000  49,505,000 48,083,000 46,314,000  43,389,000 42,606,000 41,236,000  39,239,000 39,180,000 38,898,000  37,838,000 37,813,000 37,268,000  37,717,000 37,662,000 37,053,000  36,187,000 35,309,000 33,877,000  31,328,000 30,201,000 27,207,000  23,759,000 21,113,000 18,740,000  14,826,000 13,936,000 13,587,000  13,207,000 12,606,000 12,127,000  11,078,000 11,067,000 10,903,000  10,900,000 10,895,000 10,254,000                                                 
        total
      2,992,958,000 2,644,106,000 2,899,176,000 2,855,669,000 2,791,019,000 2,398,438,000 2,681,665,000 2,620,574,000 2,566,291,000 2,239,398,000 2,473,123,000 2,430,776,000 2,396,864,000 2,140,283,000 2,321,904,000 2,280,402,000 2,243,069,000 2,015,289,000 2,182,260,000 2,149,911,000 2,117,101,000 1,896,909,000 2,040,633,000 2,010,394,000 1,980,539,000 1,808,867,000 1,955,511,000 1,928,358,000 1,895,085,000 1,755,599,000 1,819,259,000 1,787,656,000 1,759,525,000 1,658,935,000 1,714,457,000 1,686,495,000 1,661,186,000 1,608,428,000 1,686,038,000 1,655,690,000 1,619,410,000 1,516,505,000 1,558,408,000 1,534,228,000 1,517,147,000 1,444,710,000 1,490,987,000 1,474,025,000 1,459,691,000 1,386,869,000 1,434,403,000 1,402,832,000 1,376,803,000 1,305,366,000 1,354,751,000 1,333,049,000 1,320,855,000 1,261,381,000 1,298,263,000 1,281,208,000 1,256,336,000 1,177,019,000 1,229,361,000 1,215,883,000 1,254,821,000                                 
        less - accumulated depreciation
      -663,265,000  -658,307,000 -662,088,000 -653,528,000  -641,076,000 -638,938,000 -632,597,000  -622,652,000 -616,715,000 -616,403,000  -603,752,000 -596,915,000 -593,210,000  -587,714,000 -579,278,000 -574,678,000  -561,523,000 -553,996,000 -548,142,000  -577,145,000 -572,695,000 -569,583,000  -556,344,000 -548,867,000 -540,695,000  -532,841,000 -531,292,000 -524,027,000  -557,450,000 -548,553,000 -540,092,000  -526,289,000 -518,721,000 -509,584,000  -495,544,000 -485,357,000 -475,762,000  -465,944,000 -456,092,000                                   -238,803,000    -220,295,000 -217,138,000 -212,371,000  -204,955,000   
        net property, plant and equipment
      2,329,693,000  2,240,869,000 2,193,581,000 2,137,491,000  2,040,589,000 1,981,636,000 1,933,694,000  1,850,471,000 1,814,061,000 1,780,461,000  1,718,152,000 1,683,487,000 1,649,859,000  1,594,546,000 1,570,633,000 1,542,423,000  1,479,110,000 1,456,398,000 1,432,397,000  1,378,366,000 1,355,663,000 1,325,502,000  1,262,915,000 1,238,789,000 1,218,830,000  1,181,616,000 1,155,203,000 1,137,159,000  1,128,588,000 1,107,137,000 1,079,318,000  1,032,119,000 1,015,507,000 1,007,563,000  995,443,000 988,668,000 983,929,000  968,459,000 946,740,000 929,538,000  912,027,000 900,009,000 897,835,000  891,134,000 882,993,000 867,989,000  852,051,000 846,208,000 873,254,000                                 
        other property and investments
      57,257,000 58,664,000 55,737,000 52,512,000 49,720,000 50,418,000 48,103,000 45,923,000 44,896,000 42,932,000 37,767,000 39,889,000 38,408,000 36,907,000 34,113,000 35,527,000 39,018,000 40,806,000 37,287,000 37,414,000 35,811,000 35,318,000 31,326,000 30,239,000 27,744,000 30,293,000 27,579,000 27,312,000 26,632,000 25,356,000 26,386,000 24,073,000 23,744,000 24,070,000 23,346,000 21,413,000 21,161,000 20,836,000 20,656,000 18,936,000 18,687,000 18,710,000 18,301,000 18,728,000 17,505,000 17,536,000 17,509,000 16,118,000 15,828,000 15,806,000 15,343,000 14,005,000 13,835,000 13,755,000 13,636,000 13,471,000 11,968,000 11,803,000 11,894,000 10,868,000 11,001,000 10,981,000 10,920,000 10,545,000 11,723,000 11,720,000 11,526,000 11,484,000 10,600,000 10,689,000 10,720,000 10,813,000 10,878,000 10,245,000  10,003,000 9,986,000  9,697,000 9,695,000 9,738,000 9,740,000 9,765,000 9,814,000 9,737,000 9,792,000 9,845,000 9,895,000 22,071,000  22,035,000 22,556,000 22,610,000  24,000,000 24,063,000 24,284,000 
        current assets
                                                                                                       
        cash and cash equivalents
      22,155,000 18,824,000 26,073,000 20,247,000 21,229,000 26,661,000 16,469,000 3,583,000 17,007,000 14,073,000 8,604,000 1,026,000 2,126,000 5,997,000 2,258,000 10,825,000 10,126,000 4,963,000 7,141,000 5,359,000 6,951,000 36,737,000 8,127,000 6,496,000 429,000 1,334,000 10,398,000 1,516,000 1,844,000 7,141,000 1,976,000 5,557,000 5,984,000 214,000 6,661,000 2,124,000 621,000 436,000 2,789,000 4,518,000 8,457,000 4,364,000 27,254,000 43,862,000 74,675,000 75,988,000 57,862,000 77,849,000 74,936,000 38,226,000 26,162,000 8,525,000 32,794,000 23,486,000 43,066,000 25,915,000 6,558,000 1,315,000 5,215,000 11,262,000 2,371,000 4,197,000 7,692,000 6,603,000 5,080,000 1,685,000 7,357,000 9,754,000 24,893,000 7,283,000 1,241,000 371,000 765,000 1,698,000  5,274,000 9,052,000  6,591,000 9,434,000 14,400,000 13,032,000 5,691,000 5,104,000 5,825,000 4,303,000 6,602,000 6,949,000 9,011,000  11,368,000 5,657,000 16,415,000  11,673,000 11,469,000 12,452,000 
        accounts receivable — customers
      39,741,000  46,577,000 42,179,000 34,013,000  44,422,000 39,076,000 28,897,000  32,600,000 27,000,000 21,293,000  31,829,000 27,119,000 23,353,000  33,251,000 28,516,000 22,016,000  33,729,000 30,355,000 24,599,000  28,088,000 24,245,000 17,485,000  29,915,000 26,631,000 19,224,000  29,392,000 25,338,000 15,523,000  22,910,000 20,414,000 16,183,000  22,112,000 19,247,000 16,773,000  26,348,000 25,181,000 19,902,000  30,303,000 27,401,000 17,315,000  28,792,000 22,212,000 18,869,000  25,048,000 23,347,000 16,779,000  20,517,000 15,844,000 12,824,000  18,811,000 15,906,000                              
        unbilled receivable
      32,161,000 26,621,000 28,056,000 27,798,000 35,645,000 28,446,000 26,871,000 24,481,000 24,733,000 23,516,000 24,248,000 21,230,000 22,444,000  25,165,000 24,811,000 25,500,000  25,517,000 29,569,000 23,315,000  25,086,000 21,975,000 19,548,000  21,195,000 18,064,000 15,631,000  25,215,000 24,681,000 27,959,000  25,833,000 24,350,000 19,916,000  20,629,000 17,957,000 18,233,000  21,909,000 17,949,000 16,925,000 3,513,000 32,629,000                                                   
        receivable from the u.s. government
      31,890,000  37,072,000 40,480,000 35,944,000  44,329,000 50,138,000 43,153,000  51,564,000 47,301,000 41,091,000  25,493,000 23,110,000 21,834,000  29,103,000 25,698,000 23,606,000  27,144,000 21,903,000 20,879,000  20,925,000 20,949,000 20,862,000 39,583,000 21,095,000 25,977,000 20,357,000  7,112,000 10,900,000 9,021,000  9,484,000 7,836,000 4,076,000  4,934,000 7,288,000 7,944,000  3,542,000 3,615,000 7,717,000  19,869,000 7,369,000 5,377,000  4,287,000 10,091,000 12,908,000  10,421,000 14,407,000 8,423,000  6,640,000 4,310,000 9,898,000  10,281,000 6,470,000 5,971,000  7,964,000 5,015,000 7,296,000   4,883,000 10,252,000                     
        other receivables
      4,246,000  12,327,000 18,700,000                                                                                              
        materials and supplies
      16,647,000 16,406,000 16,955,000 15,892,000 15,516,000 15,140,000 16,421,000 16,969,000 16,225,000 17,574,000 16,218,000 16,822,000  14,623,000    12,163,000    8,619,000    6,429,000    5,775,000    4,795,000    4,294,000    5,415,000    3,588,000    4,558,000    5,348,000    3,070,000    2,161,000    1,900,000    2,109,000    1,576,000        1,421,000    1,496,000            
        regulatory assets — current
      27,597,000 39,396,000 49,358,000 53,541,000 54,242,000 50,504,000 42,005,000 43,756,000 44,652,000 45,144,000 32,355,000 25,360,000 11,032,000 14,028,000 13,048,000 10,325,000 9,054,000 8,897,000 13,026,000 14,394,000 10,628,000 13,088,000 16,766,000 19,917,000 20,974,000 20,930,000 14,819,000 13,671,000 20,486,000 16,527,000 22,130,000 25,209,000 30,844,000 34,220,000 27,385,000 40,849,000 50,915,000 43,296,000 32,062,000 32,378,000 33,555,000 30,134,000 10,557,000 11,187,000 12,918,000 12,379,000 6,228,000 13,607,000 22,905,000 27,676,000 34,635,000 35,364,000 34,376,000 32,336,000 25,525,000 31,814,000 36,213,000 36,362,000 31,104,000 33,944,000 35,438,000 34,152,000 20,757,000 20,456,000 16,479,000 12,286,000 8,693,000 15,062,000  16,071,000    5,187,000          5,428,000 6,251,000   4,582,000 5,262,000         
        prepayments and other current assets
      14,252,000 7,551,000 8,196,000 10,657,000 13,729,000 7,286,000 6,945,000 9,042,000 11,777,000 5,767,000 6,525,000 9,174,000 11,690,000 5,450,000 7,292,000 8,458,000 11,223,000 5,317,000 7,049,000 8,365,000 10,028,000 5,555,000 6,541,000 8,003,000 9,417,000 5,413,000 6,443,000 7,005,000 8,351,000 6,063,000 6,915,000 6,769,000 8,783,000 5,596,000 5,248,000 4,951,000 5,237,000 3,735,000 4,466,000 4,619,000 5,453,000 3,229,000 3,931,000 4,134,000 5,853,000 2,745,000 4,261,000 4,542,000 4,876,000 2,481,000 3,679,000 4,189,000 4,251,000 4,391,000 5,380,000 5,822,000 5,439,000 3,959,000 4,896,000 5,127,000 5,174,000 6,157,000 2,211,000 1,775,000 2,492,000 3,355,000 1,986,000 2,236,000 2,343,000 2,950,000 1,943,000 2,042,000 2,232,000 2,765,000  2,628,000 3,002,000  1,395,000 2,166,000 2,394,000 2,998,000 7,047,000 3,364,000 3,486,000             
        contract assets
      32,667,000 31,428,000 26,167,000 22,818,000 24,120,000 20,130,000 19,661,000 18,145,000 14,155,000 9,956,000 11,232,000 11,630,000 3,637,000 9,390,000 9,232,000 8,991,000 7,715,000 6,135,000 5,438,000 6,720,000 9,751,000 8,873,000 9,719,000 17,097,000 18,749,000 15,567,000 21,645,000 25,776,000 24,179,000 22,169,000 18,889,000 16,153,000 22,001,000                                                                 
        total current assets
      221,356,000 231,074,000 250,781,000 252,312,000 238,236,000 233,346,000 222,360,000 209,523,000 205,091,000 205,978,000 191,685,000 168,910,000 139,690,000 151,294,000 138,790,000 138,970,000 130,856,000 138,052,000 143,659,000 136,312,000 118,912,000 157,115,000 139,407,000 137,026,000 127,405,000 122,456,000 132,469,000 122,025,000 116,776,000 131,468,000 134,898,000 141,167,000 145,676,000 155,463,000 146,663,000 149,536,000 192,079,000 166,875,000 136,856,000 132,816,000 131,125,000 132,697,000 135,463,000 150,228,000 189,397,000 209,451,000 186,555,000 197,850,000 213,242,000 191,617,000 202,565,000 181,120,000 173,872,000 184,033,000 187,090,000 175,854,000 171,872,000 165,601,000 160,146,000 172,173,000 204,179,000 204,984,000 196,717,000 172,051,000 107,377,000 96,015,000 99,664,000 97,416,000 107,261,000 90,614,000 76,392,000 69,984,000 59,840,000 63,015,000  70,210,000 71,712,000 31,015,000 66,221,000 68,728,000 67,781,000 68,866,000 56,455,000 49,743,000  53,024,000 47,509,000 44,070,000  39,603,000    16,229,000    
        other assets
                                                                                                       
        unbilled revenue — receivable from the u.s. government
      961,000  1,718,000 2,178,000 2,801,000  4,207,000 5,304,000 5,933,000  5,854,000 6,822,000 7,790,000  7,260,000 8,064,000                                                                                  
        operating lease right-of-use assets
      7,244,000 6,093,000 6,638,000 7,202,000 7,463,000 8,028,000 8,585,000 7,852,000 7,452,000 7,982,000 8,512,000 8,475,000 8,990,000 9,535,000 9,172,000 9,617,000 10,008,000 10,479,000 11,072,000 10,633,000 10,718,000 11,146,000 11,516,000 11,967,000 12,556,000 13,168,000 13,017,000 11,058,000 6,276,000                                                                     
        regulatory assets
      28,037,000 30,073,000 27,117,000 28,020,000 32,517,000 27,101,000 36,952,000 37,046,000 34,040,000 25,585,000 47,557,000 32,574,000 10,474,000 5,694,000 5,291,000 2,263,000 3,289,000 3,182,000 10,662,000 9,799,000 7,635,000 3,451,000             103,521,000 104,645,000 101,068,000 102,985,000 122,030,000 117,682,000 110,643,000 102,562,000 144,800,000 131,869,000 123,265,000 118,829,000 100,815,000 99,698,000 96,745,000 95,005,000 138,863,000 149,529,000 150,853,000 143,679,000 151,195,000 143,867,000 144,470,000 143,595,000 109,272,000 106,687,000 99,628,000 101,801,000 110,994,000 106,169,000 112,407,000 110,420,000 118,893,000 113,717,000 110,313,000 104,521,000 77,385,000 80,418,000 82,518,000 82,539,000  88,819,000 84,735,000  61,288,000 60,036,000 57,789,000 55,866,000 50,587,000 53,621,000 53,802,000 54,404,000 57,204,000 56,592,000 58,239,000         
        other
      63,806,000 63,872,000 41,595,000 41,859,000 41,441,000 41,264,000 18,827,000 18,810,000 18,925,000 18,758,000 15,011,000 14,831,000 13,400,000 13,532,000 15,341,000 15,366,000 15,453,000 16,230,000 10,697,000 10,702,000 10,553,000 10,597,000 10,191,000 7,705,000 7,699,000 7,702,000 5,426,000 5,418,000 5,365,000 5,322,000 5,700,000 5,693,000 5,708,000 5,667,000 8,504,000 7,416,000 4,934,000 5,068,000 6,773,000 6,738,000 6,749,000 11,391,000 9,509,000 9,599,000 12,059,000 12,105,000 12,033,000 13,322,000 13,605,000 14,227,000 15,372,000 15,487,000 15,412,000 15,587,000 15,813,000 12,456,000 12,500,000 12,474,000 8,395,000 8,585,000 7,972,000 8,101,000 7,017,000 10,326,000 10,318,000 10,320,000 10,157,000 10,273,000 10,365,000 10,273,000 10,503,000 10,385,000 8,359,000 8,331,000  8,525,000 8,767,000  8,173,000 8,322,000 8,074,000 8,419,000 8,745,000 8,708,000 8,569,000 8,567,000 8,260,000 8,731,000 8,904,000  28,336,000 25,952,000 26,075,000  1,386,000 1,367,000 1,347,000 
        total other assets
      125,834,000 129,035,000 107,886,000 112,129,000 120,006,000 116,820,000 108,456,000 110,122,000 108,099,000 103,816,000 124,190,000 115,659,000 100,697,000 91,291,000 90,404,000 90,546,000 93,083,000 95,005,000 98,192,000 96,883,000 94,559,000 86,011,000 75,459,000 73,189,000 72,227,000 71,761,000 64,851,000   47,183,000                                                                    
        total assets
      2,734,140,000 2,715,092,000 2,655,273,000 2,610,534,000 2,545,453,000 2,500,209,000 2,420,624,000 2,348,320,000 2,292,896,000 2,246,122,000 2,205,229,000 2,139,635,000 2,060,372,000 2,034,374,000 1,982,575,000 1,949,646,000 1,913,932,000 1,900,983,000 1,874,800,000 1,842,358,000 1,792,821,000 1,791,603,000 1,726,418,000 1,697,968,000 1,660,889,000 1,641,331,000 1,604,381,000 1,567,283,000 1,526,097,000 1,501,433,000 1,465,042,000 1,441,122,000 1,423,664,000 1,416,734,000 1,486,486,000 1,462,653,000 1,480,268,000 1,470,493,000 1,440,386,000 1,406,299,000 1,368,891,000 1,348,600,000 1,362,164,000 1,343,355,000 1,367,420,000 1,378,298,000 1,326,115,000 1,327,092,000 1,333,771,000 1,310,183,000 1,351,053,000 1,312,986,000 1,289,514,000 1,280,943,000 1,289,638,000 1,252,760,000 1,246,629,000 1,238,362,000 1,195,848,000 1,197,879,000 1,204,548,000 1,192,035,000 1,191,429,000 1,159,630,000 1,132,854,000 1,113,293,000 1,116,703,000 1,101,079,000 1,095,272,000 1,061,287,000 1,020,183,000 1,002,541,000 975,385,000 963,898,000  955,841,000 949,779,000 317,951,000 908,708,000 899,057,000 887,970,000 876,777,000 844,357,000 829,800,000 816,252,000 810,277,000 786,881,000 761,426,000 746,965,000 268,567,000    248,367,000 697,758,000   
        capitalization
                                                                                                       
        common shares, no par value
                                          247,089,000  246,064,000 245,360,000 244,568,000  244,327,000 247,034,000 251,343,000  253,957,000 254,610,000 254,217,000  252,351,000 251,627,000 249,874,000  247,030,000 236,973,000 234,846,000  231,129,000 229,228,000 228,024,000                                     
        authorized: 60,000,000 shares
                                                                                                       
        outstanding: 39,192,653 shares in 2026 and 39,082,470 shares in 2025
      433,238,000                                                                                                 
        retained earnings
      630,607,000  611,299,000 589,619,000 573,927,000  554,188,000 535,901,000 520,116,000    469,056,000                                                                                     
        total common shareholders’ equity
      1,063,845,000  1,009,309,000 972,519,000 956,407,000  879,466,000 833,477,000 800,493,000  771,337,000 755,066,000 730,848,000  705,504,000 694,225,000 687,425,000  678,935,000 664,134,000 649,393,000  633,820,000 619,288,000 604,583,000  595,947,000 578,787,000 561,500,000  554,161,000 539,210,000 531,524,000  525,812,000 513,025,000 497,944,000  490,799,000 476,696,000 467,401,000  470,023,000 477,578,000 497,365,000  510,312,000 495,181,000 495,799,000  486,887,000 465,385,000 461,721,000  448,852,000 426,914,000 415,019,000  405,052,000 392,809,000 380,897,000  372,106,000 369,534,000 363,966,000  359,747,000 353,979,000 311,857,000  311,001,000 309,181,000 303,509,000   292,438,000 287,319,000  278,085,000 274,415,000 267,071,000  262,813,000 254,071,000 251,784,000  254,303,000 215,593,000 210,880,000         
        long-term debt
      782,739,000 782,700,000 790,261,000 789,484,000 690,208,000 640,382,000 640,247,000 640,028,000 575,530,000 575,555,000 575,459,000 576,376,000 576,431,000 446,547,000 446,817,000 446,940,000 412,150,000 412,176,000 412,093,000 412,345,000 440,326,000 440,348,000 440,343,000 280,886,000 280,971,000 280,996,000 281,001,000 281,014,000 281,070,000 281,087,000 281,010,000 281,031,000 281,053,000 321,039,000 320,949,000 320,969,000 320,985,000 320,981,000 320,897,000 320,910,000 320,910,000 325,541,000 325,550,000 325,613,000 325,722,000 325,798,000 310,807,000 310,912,000 326,010,000 326,079,000 332,088,000 332,359,000 332,446,000 332,463,000 344,248,000 341,541,000 340,374,000 340,395,000 340,404,000 340,395,000 299,763,000 299,839,000 299,902,000 299,935,000 305,794,000 305,866,000 306,298,000 306,346,000 306,469,000 266,536,000 266,945,000 267,114,000 267,174,000 267,226,000  267,628,000 267,776,000  268,181,000 268,209,000 268,266,000 268,405,000 228,685,000 228,892,000 228,902,000 228,902,000 229,258,000 229,468,000 229,590,000  230,121,000 230,776,000 230,887,000  245,190,000 245,372,000 245,505,000 
        total capitalization
      1,846,584,000 1,828,281,000 1,799,570,000 1,762,003,000 1,646,615,000 1,560,433,000 1,519,713,000 1,473,505,000 1,376,023,000 1,351,664,000 1,346,796,000 1,331,442,000 1,307,279,000 1,156,096,000 1,152,321,000 1,141,165,000 1,099,575,000 1,098,123,000 1,091,028,000 1,076,479,000 1,089,719,000 1,082,021,000 1,074,163,000 900,174,000 885,554,000 882,526,000 876,948,000 859,801,000 842,570,000 839,310,000 835,171,000 820,241,000 812,577,000 850,984,000 846,761,000 833,994,000 818,929,000 815,278,000 811,696,000 797,606,000 788,311,000 791,486,000 795,573,000 803,191,000 823,087,000 832,599,000 821,119,000 806,093,000 821,809,000 818,483,000 818,975,000 797,744,000 794,167,000 787,042,000 793,100,000 768,455,000 755,393,000 749,061,000 745,456,000 733,204,000 680,660,000 677,380,000 672,008,000 669,469,000 669,760,000 665,296,000 666,045,000 660,325,000 618,326,000 577,039,000 577,946,000 576,295,000 570,683,000 569,355,000  560,066,000 555,095,000 283,734,000 546,266,000 542,624,000 535,337,000 532,499,000 491,498,000 482,963,000 480,686,000 480,367,000 483,561,000 445,061,000 440,470,000 212,487,000    213,279,000    
        current liabilities
                                                                                                       
        long-term debt — current
      8,214,000 8,209,000 479,000 398,000 390,000 385,000 385,000 365,000 358,000 353,000 353,000 414,000 404,000 399,000 399,000 394,000 382,000 377,000 377,000 376,000 364,000 358,000 358,000 359,000 349,000 344,000 344,000 339,000 326,000 40,320,000 40,320,000 40,313,000 40,321,000 324,000 333,000 336,000 336,000 330,000 330,000 318,000 318,000 312,000 312,000 308,000 299,000 292,000 6,292,000 21,291,000 6,291,000 6,298,000 3,398,000 3,383,000 3,383,000 3,328,000 178,000 177,000 247,000 291,000 358,000 392,000 382,000 376,000 372,000 368,000 699,000 695,000 648,000 644,000  636,000    609,000          658,000 658,000   820,000 820,000         
        accounts payable
      79,406,000 86,021,000 81,664,000 76,071,000 67,771,000 88,591,000 76,700,000 71,979,000 69,584,000 68,705,000 71,829,000 70,678,000 65,705,000 84,849,000 69,982,000 71,929,000 67,490,000 65,902,000 67,952,000 65,951,000 57,360,000 63,788,000 53,644,000 51,771,000 43,516,000 55,616,000 59,771,000 55,645,000 53,205,000 59,532,000 50,448,000 43,391,000 38,794,000 50,978,000 53,804,000 45,214,000 37,260,000 43,724,000 48,229,000 53,975,000 47,856,000 50,585,000 46,517,000 42,336,000 36,952,000 41,855,000 49,740,000 45,417,000 42,593,000 49,787,000 62,898,000 55,216,000 46,605,000 40,569,000 52,081,000 39,089,000 38,097,000 37,873,000 43,656,000 57,972,000 42,908,000 36,155,000 43,388,000 41,233,000 33,967,000 33,903,000 37,361,000 39,622,000 35,974,000 36,582,000 37,618,000 34,902,000 27,785,000 29,091,000  25,020,000 23,003,000  23,284,000 20,875,000 19,996,000 19,653,000 18,471,000 18,782,000 14,460,000 18,206,000 18,965,000 15,527,000 13,382,000 1,000 11,514,000 8,598,000 8,385,000 59,000 18,139,000 16,837,000 14,514,000 
        income taxes payable
      11,718,000 1,169,000 27,343,000 13,975,000 6,756,000 481,000 161,000 4,249,000 5,105,000 492,000 28,627,000 19,453,000 10,855,000 1,848,000 5,464,000 3,350,000 2,879,000 4,662,000 3,569,000 390,000 6,474,000 6,783,000 3,053,000 5,401,000 171,000 95,000 2,019,000 3,104,000 3,813,000 360,000 1,049,000 486,000 238,000 225,000 6,013,000 11,726,000 253,000 149,000 5,958,000 51,000 454,000 68,000 2,858,000 120,000 799,000 638,000 5,642,000 2,808,000 655,000 507,000 795,000 437,000 750,000 511,000 1,726,000 1,129,000 1,654,000 332,000 487,000 521,000 4,189,000 2,277,000 333,000 234,000 2,640,000 72,000 21,000 598,000 1,067,000 974,000   212,000 398,000  2,208,000 115,000 2,194,000 4,392,000 2,294,000 1,962,000 1,534,000 2,908,000 3,356,000              
        accrued other taxes
      9,745,000 12,871,000 16,119,000 14,294,000 13,656,000 16,694,000 15,533,000 13,068,000 12,581,000 14,654,000 17,369,000 14,542,000 14,257,000 16,257,000 15,760,000 13,847,000 14,983,000 17,137,000 12,174,000 9,977,000 9,888,000 11,902,000 11,560,000 8,969,000 8,367,000 11,110,000 10,846,000 8,140,000 7,119,000 10,094,000 10,311,000 7,904,000 5,939,000 7,344,000 9,195,000 7,275,000 6,576,000 9,112,000 9,527,000 6,357,000 5,882,000 8,142,000 8,329,000 6,235,000 4,675,000 8,602,000 8,711,000 7,978,000 7,102,000 9,802,000 8,255,000 6,599,000 4,125,000 8,167,000                                            
        accrued employee expenses
      19,874,000 16,193,000 16,321,000 13,248,000 18,640,000 15,523,000 15,723,000 13,085,000 18,428,000 14,738,000 14,817,000 12,741,000 17,390,000 13,996,000 15,529,000 13,160,000 18,293,000 16,256,000 15,680,000 16,495,000 18,138,000 15,122,000 13,827,000 13,522,000 14,681,000 14,255,000 12,173,000 12,363,000 14,043,000 13,842,000 11,633,000 11,897,000 13,647,000 12,969,000 11,211,000 11,423,000 13,064,000 12,304,000 10,666,000 11,129,000 11,966,000 11,748,000 11,684,000 10,056,000 12,480,000 10,519,000 11,204,000 9,969,000 12,655,000 10,801,000 10,611,000 9,202,000 10,952,000 9,919,000 9,710,000 9,248,000 10,607,000 8,659,000 9,116,000 8,878,000 9,705,000 8,084,000 8,019,000 8,663,000 9,031,000 7,326,000 7,014,000 7,346,000 6,545,000 5,625,000 6,131,000 7,321,000 6,033,000 6,228,000  5,564,000 5,191,000  4,428,000 5,120,000 4,721,000 5,879,000 4,240,000 4,744,000 4,136,000 4,260,000 4,320,000 4,811,000 4,791,000  6,059,000 5,032,000 5,091,000     
        accrued interest
      11,499,000 9,545,000 11,450,000 9,456,000 9,798,000 8,133,000 9,622,000 8,354,000 9,003,000 8,607,000 8,952,000 7,801,000 8,411,000 5,308,000 7,234,000 4,944,000 6,320,000 4,545,000 6,242,000 4,496,000 7,277,000 4,832,000 7,245,000 2,935,000 6,423,000 3,050,000 6,488,000 3,109,000 6,492,000 3,865,000 6,560,000 3,834,000 6,617,000 3,861,000 6,576,000 3,831,000 6,626,000 3,864,000 6,595,000 3,852,000 6,623,000 3,626,000 6,282,000 3,546,000 6,292,000 3,549,000 6,143,000 3,894,000 6,248,000 3,897,000 6,251,000 3,916,000 6,240,000 3,909,000 6,423,000 3,921,000 6,430,000 3,938,000 6,440,000 3,902,000 5,244,000 3,256,000 5,251,000 3,467,000 5,356,000 3,290,000 5,357,000 3,224,000 5,331,000 2,463,000 5,230,000 2,466,000 5,243,000 2,467,000  2,469,000 5,270,000  5,245,000 2,547,000 5,264,000 2,254,000 5,139,000 1,877,000 5,025,000 1,670,000 5,023,000 1,874,000 5,006,000  5,119,000 1,957,000 5,110,000  5,023,000 1,924,000 5,101,000 
        contract liabilities
      11,618,000 11,735,000 10,420,000 9,795,000 7,747,000 5,662,000 3,649,000 1,239,000 653,000 1,352,000 596,000 585,000 560,000 903,000 1,253,000 322,000 210,000 257,000 555,000 688,000 1,049,000 1,800,000 8,670,000 10,569,000 10,675,000 11,167,000 12,689,000 11,564,000 10,426,000 7,530,000 8,942,000 7,043,000 6,583,000                                                                 
        operating lease liabilities
      2,260,000 2,062,000 2,081,000 2,110,000 2,032,000 2,074,000 2,105,000 1,894,000 1,788,000 1,856,000 1,909,000 1,880,000 1,906,000 1,892,000 1,892,000 1,968,000 1,991,000 2,044,000 2,079,000 2,049,000 2,010,000 2,013,000 1,812,000 1,794,000 1,815,000 1,849,000 1,841,000 1,808,000 2,027,000                                                                     
        purchase power contract derivative at fair value
      15,708,000 15,503,000 14,275,000 11,244,000 13,094,000 8,823,000 8,320,000 5,593,000 6,168,000  1,525,000 4,657,000 6,669,000 11,847,000                                                                                    
        total current liabilities
      181,597,000 174,612,000 197,475,000 162,075,000 294,296,000 285,525,000 321,432,000 299,118,000 178,577,000 166,623,000 195,007,000 140,930,000 307,690,000 396,522,000 373,179,000 348,736,000 160,154,000 155,574,000 151,120,000 111,351,000 113,010,000 118,572,000 113,456,000 158,687,000 132,520,000 115,998,000 119,847,000 106,346,000 107,630,000 146,585,000 143,186,000 129,840,000 196,491,000 156,662,000 151,869,000 140,454,000 178,673,000 177,944,000 179,848,000 160,210,000 139,051,000 123,507,000 123,976,000 95,167,000 96,734,000 99,290,000 120,593,000 127,501,000 119,076,000 100,906,000 115,673,000 102,448,000 89,844,000 93,697,000 109,245,000 99,615,000 107,372,000 104,370,000 116,400,000 124,630,000 195,990,000 178,842,000 189,391,000 154,808,000 106,093,000 99,706,000 99,000,000 88,863,000 131,275,000 137,397,000 134,971,000 119,291,000 103,076,000 94,251,000  83,855,000 88,388,000  84,690,000 76,667,000 80,372,000 77,585,000 103,927,000 92,377,000 85,149,000 86,336,000 74,617,000 92,752,000 82,414,000     35,088,000    
        other credits
                                                                                                       
        notes payable to banks
      132,000,000  5,000,000  143,000,000 124,000,000 177,000,000 167,000,000 43,000,000 42,000,000 37,000,000  175,500,000 255,500,000    31,000,000      49,000,000 32,000,000 5,000,000        59,000,000   96,000,000 90,000,000   43,000,000 28,000,000 15,000,000               2,000,000 4,500,000 12,000,000 60,900,000 60,900,000 57,200,000 40,200,000 21,000,000 17,400,000 20,550,000 10,850,000 54,370,000 74,700,000 65,500,000 56,750,000 47,600,000 37,200,000  28,500,000 36,000,000  25,000,000 28,000,000 31,000,000 27,000,000 55,000,000 49,000,000 47,000,000 45,000,000 28,000,000 54,000,000 47,000,000 56,000,000 33,000,000 33,000,000 30,000,000 35,000,000 14,000,000 13,000,000  
        advances for construction
      81,656,000 77,976,000 75,770,000 74,537,000 69,926,000 69,856,000 69,983,000 68,660,000 69,468,000 67,431,000 63,961,000 63,520,000 64,097,000 64,351,000 65,210,000 65,403,000 66,469,000 66,727,000 66,505,000 64,180,000 65,622,000 63,374,000 63,276,000 62,699,000 63,925,000 63,989,000 63,788,000 63,582,000 66,185,000 66,305,000 67,467,000 66,761,000 67,364,000 67,465,000 67,438,000 67,209,000 68,634,000 69,722,000 69,809,000 70,383,000 68,802,000 68,041,000 67,104,000 66,700,000 68,298,000 68,328,000 68,327,000 68,394,000 69,272,000 69,332,000 68,933,000 68,831,000 70,580,000 70,781,000 73,451,000 73,797,000 75,563,000 75,353,000 75,574,000 75,900,000 78,010,000 78,325,000 78,502,000 78,646,000 84,544,000 84,653,000 84,619,000 85,611,000 87,399,000 86,816,000 85,082,000 85,737,000 83,952,000 84,479,000  83,169,000 84,266,000  86,961,000 86,642,000 87,150,000 87,375,000 83,522,000 83,300,000 84,036,000 81,351,000 79,956,000 78,386,000 79,313,000  74,586,000 69,909,000 70,923,000  69,770,000 68,464,000 70,161,000 
        contributions in aid of construction – net
      180,615,000  170,750,000 168,560,000 161,497,000  154,924,000 154,201,000                                                               100,865,000 99,664,000       86,708,000   83,976,000    73,100,000            
        deferred income taxes
      195,288,000 194,121,000 190,986,000 188,786,000 183,787,000 180,173,000 175,966,000 167,699,000 166,027,000 161,577,000 156,438,000 153,386,000 148,138,000 149,677,000 142,726,000 142,340,000 142,661,000 140,290,000 136,531,000 134,644,000 131,894,000 131,172,000 129,137,000 127,953,000 126,456,000 125,304,000 118,889,000 114,418,000 112,850,000 114,216,000 114,925,000 115,374,000 116,816,000 115,703,000 234,719,000 231,031,000 231,348,000 224,530,000 205,663,000 200,113,000 195,511,000 192,852,000 191,825,000 190,121,000 191,358,000  157,355,000 159,149,000 159,846,000 8,000 13,000 11,000 11,000 11,000 11,000 11,000 11,000 15,000 11,000 486,000 490,000 495,000 94,000 152,000 238,000 313,000 313,000 307,000 291,000 254,000 209,000 112,000 67,000 28,000  2,000 11,000  34,000 38,000 36,000 69,669,000 65,046,000 60,993,000 59,829,000 59,839,000 54,332,000 53,882,000 54,007,000         
        regulatory liabilities
      55,542,000 60,205,000 47,291,000 43,560,000 27,167,000 22,926,000 3,896,000 750,000 1,123,000  2,245,000 1,624,000 2,097,000 4,574,000 4,821,000 3,444,000 3,642,000 1,896,000 3,821,000    20,064,000 13,881,000 19,107,000 23,380,000 20,083,000 26,955,000 44,212,000 44,867,000 43,766,000 36,008,000 35,572,000 32,178,000                               1,177,000 1,173,000 1,182,000 423,000 424,000 425,000 458,000 531,000 529,000 557,000  572,000 605,000  571,000 760,000 760,000 1,823,000 2,180,000 10,545,000 11,084,000 9,731,000 11,540,000 11,394,000 9,911,000         
        unamortized investment tax credits
      856,000 873,000 890,000 907,000 925,000 942,000 959,000 976,000 993,000 1,011,000 1,028,000 1,046,000 1,064,000 1,082,000 1,099,000 1,117,000 1,135,000 1,153,000 1,170,000 1,188,000 1,206,000 1,224,000 1,242,000 1,259,000 1,274,000 1,295,000 1,313,000 1,331,000 1,349,000 1,367,000 1,384,000 1,402,000 1,419,000 1,436,000 1,453,000 1,471,000 1,511,000 1,529,000 1,550,000 1,570,000 1,591,000 1,612,000 1,632,000 1,654,000 1,677,000 1,699,000 1,722,000 1,745,000 1,768,000 1,790,000 1,813,000 1,836,000 1,859,000 1,881,000 1,904,000 1,929,000 1,950,000 1,972,000 1,995,000 2,018,000 2,041,000 2,063,000 2,086,000 2,109,000 2,132,000 2,154,000 2,177,000 2,200,000 2,223,000 2,245,000 2,268,000 2,291,000 2,314,000 2,336,000  2,382,000 2,405,000  2,450,000 2,473,000 2,496,000 2,518,000 2,541,000 2,564,000 2,587,000 2,609,000 2,632,000 2,655,000 2,678,000  2,723,000 2,746,000 2,769,000  2,814,000 2,837,000 2,860,000 
        accrued pension and other postretirement benefits
      36,807,000  32,043,000 34,916,000 34,432,000  32,289,000 34,360,000 33,504,000  34,111,000 35,961,000 34,796,000  58,835,000 61,764,000 61,594,000  93,671,000 96,766,000 96,201,000  66,924,000 69,953,000 69,213,000  57,042,000 59,889,000 58,887,000  54,239,000 59,402,000 58,626,000  46,868,000 52,247,000 50,836,000  44,614,000 48,858,000 47,653,000  59,190,000 63,658,000 63,339,000  34,873,000 41,664,000 40,317,000  70,945,000 73,493,000 73,718,000  68,550,000 70,811,000 70,518,000  41,169,000 44,809,000 43,988,000  36,759,000 42,901,000 41,930,000  49,220,000 54,890,000 54,122,000 52,235,000 20,774,000 23,480,000 22,170,000 20,851,000  31,595,000 32,846,000  14,955,000 17,313,000 15,468,000 13,562,000 9,994,000 12,518,000 10,609,000 8,793,000 3,881,000 2,493,000 5,849,000         
        total other credits
      705,959,000 712,199,000 658,228,000 686,456,000 604,542,000 654,251,000 579,479,000 575,697,000 738,296,000 727,835,000 663,426,000 667,263,000 445,403,000 481,756,000 457,075,000 459,745,000 654,203,000 647,286,000 632,652,000 654,528,000 590,092,000 591,010,000 538,799,000 639,107,000 642,815,000 642,807,000 607,586,000 601,136,000 575,897,000 515,538,000 486,685,000 491,041,000 414,596,000 409,088,000 487,856,000 488,205,000 482,666,000 477,271,000 448,842,000 448,483,000 441,529,000 433,607,000 442,615,000 444,997,000 447,599,000 446,409,000 384,403,000 393,498,000 392,886,000 390,794,000 416,405,000 412,794,000 405,503,000 400,204,000 387,293,000 384,690,000 383,864,000 384,931,000 333,992,000 340,045,000 327,898,000 335,813,000 330,030,000 335,353,000 357,001,000 348,291,000 351,658,000 351,891,000 345,671,000 346,851,000 307,266,000 306,955,000 301,626,000 300,292,000  311,920,000 306,296,000  277,752,000 279,766,000 272,261,000 266,693,000 248,932,000 254,460,000 250,417,000 243,574,000 228,703,000 223,613,000 224,081,000         
        commitments and contingencies
                                                                                                       
        total capitalization and liabilities
      2,734,140,000 2,715,092,000 2,655,273,000 2,610,534,000 2,545,453,000 2,500,209,000 2,420,624,000 2,348,320,000 2,292,896,000 2,246,122,000 2,205,229,000 2,139,635,000 2,060,372,000 2,034,374,000 1,982,575,000 1,949,646,000 1,913,932,000 1,900,983,000 1,874,800,000 1,842,358,000 1,792,821,000 1,791,603,000 1,726,418,000 1,697,968,000 1,660,889,000 1,641,331,000 1,604,381,000 1,567,283,000 1,526,097,000 1,501,433,000 1,465,042,000 1,441,122,000 1,423,664,000 1,416,734,000 1,486,486,000 1,462,653,000 1,480,268,000 1,470,493,000 1,440,386,000 1,406,299,000 1,368,891,000 1,348,600,000 1,362,164,000 1,343,355,000 1,367,420,000 1,378,298,000 1,326,115,000 1,327,092,000 1,333,771,000 1,310,183,000 1,351,053,000 1,312,986,000 1,289,514,000 1,280,943,000 1,289,638,000 1,252,760,000 1,246,629,000 1,238,362,000 1,195,848,000 1,197,879,000 1,204,548,000 1,192,035,000 1,191,429,000 1,159,630,000 1,132,854,000 1,113,293,000 1,116,703,000 1,101,079,000 1,095,272,000 1,061,287,000 1,020,183,000 1,002,541,000 975,385,000 963,898,000  955,841,000 949,779,000  908,708,000 899,057,000 887,970,000 876,777,000 844,357,000 829,800,000 816,252,000 810,277,000 786,881,000 761,426,000 746,965,000      697,758,000   
        assets
                                                                                                       
        utility plant
                                                                                                       
        regulated utility plant, at cost:
                                                                                                       
        water
       2,414,314,000    2,227,311,000    2,082,927,000    2,006,468,000    1,898,817,000    1,784,402,000    1,700,442,000    1,649,535,000    1,559,209,000    1,514,419,000    1,428,024,000    1,363,074,000    1,307,509,000    1,227,713,000    1,187,556,000    1,108,205,000    1,129,253,000    1,051,838,000 1,043,539,000 1,005,495,000 988,474,000 982,708,000  948,153,000 940,928,000  899,598,000 882,870,000 871,120,000 869,471,000 806,873,000 791,595,000 783,741,000 778,238,000 760,190,000 739,810,000 730,973,000  708,779,000 699,594,000 698,579,000  684,248,000 663,550,000 649,239,000 
        electric
       229,792,000    171,127,000    156,471,000    133,815,000    116,472,000    112,507,000    108,425,000    106,064,000    99,726,000    94,009,000    88,481,000    81,636,000    79,360,000    77,653,000    73,825,000    68,814,000    67,248,000    66,513,000 65,566,000 65,453,000 65,288,000 65,078,000  64,609,000 64,424,000  62,197,000 61,928,000 61,494,000 61,386,000 58,670,000 58,549,000 58,664,000 58,667,000 44,466,000 43,799,000 43,445,000  41,519,000 41,443,000 40,998,000  39,136,000 38,525,000 38,525,000 
        non-regulated utility property, at cost
       50,397,000    44,457,000    40,223,000    38,066,000    37,064,000    33,315,000    30,554,000    24,511,000    15,592,000    11,897,000    11,032,000    10,706,000    9,090,000    8,917,000    6,731,000                                        
        total utility plant, at cost
       2,694,503,000    2,442,895,000    2,279,621,000    2,178,349,000    2,052,353,000    1,930,224,000    1,839,421,000    1,780,110,000    1,674,527,000    1,620,325,000    1,527,537,000    1,455,416,000    1,395,959,000    1,314,283,000    1,268,112,000    1,182,814,000                                    
        less — accumulated depreciation
       -653,667,000    -648,199,000    -624,472,000    -606,231,000    -594,264,000    -568,326,000    -543,263,000    -561,855,000    -533,370,000    -532,753,000    -529,698,000    -500,239,000    -471,665,000                                  -253,106,000 -247,778,000   -233,073,000 -228,114,000       -200,393,000 -195,580,000 
        construction work in progress
       255,483,000    304,929,000    237,131,000    181,648,000    167,915,000    150,145,000    119,547,000    78,055,000    63,835,000    63,354,000    62,955,000    48,343,000    57,183,000    45,824,000    42,224,000    50,197,000    43,218,000    52,933,000 46,945,000 62,822,000 55,337,000 44,631,000  46,416,000 42,672,000  61,480,000 60,777,000 58,288,000 42,283,000 90,309,000 90,386,000 82,112,000 68,977,000 77,634,000 71,326,000 63,902,000  54,369,000 47,196,000 39,943,000  39,964,000 49,072,000 51,000,000 
        net utility plant
       2,296,319,000    2,099,625,000    1,892,280,000    1,753,766,000    1,626,004,000    1,512,043,000    1,415,705,000    1,296,310,000    1,204,992,000    1,150,926,000    1,060,794,000    1,003,520,000    981,477,000    917,791,000    896,500,000    854,956,000    866,418,000 856,294,000 847,849,000 836,502,000 825,262,000 815,459,000 801,451,000 784,788,000 776,379,000  757,125,000 753,513,000  742,369,000 731,402,000 723,804,000 713,225,000 698,230,000 687,424,000 676,739,000 664,165,000 643,487,000  610,206,000         
        accounts receivable — customers, less allowance for doubtful accounts
       38,321,000    37,699,000    34,250,000    26,206,000    34,416,000    29,162,000    20,907,000    23,395,000    26,127,000                                                                
        receivable from u.s. government, less allowance for doubtful accounts
       46,400,000    41,000,000    49,306,000    34,974,000    27,827,000    25,182,000    22,613,000    21,543,000    3,725,000    8,467,000    5,861,000    6,709,000    7,106,000    12,905,000    7,584,000    3,689,000    4,245,000    8,094,000    7,556,000                        
        other accounts receivable, less allowance for doubtful accounts
       6,127,000    6,415,000    6,340,000    4,215,000    6,510,000    3,960,000    3,096,000    3,103,000    8,251,000    3,151,000    2,302,000    4,843,000    4,914,000    7,062,000    12,181,000    7,808,000    8,424,000    6,341,000    4,154,000                        
        income taxes receivable
          30,000 65,000 2,133,000   52,000 59,000 74,000 35,000 3,901,000 91,000 94,000 45,000 236,000 124,000 1,147,000 68,000 103,000 163,000 155,000 2,435,000 5,685,000 238,000 1,545,000 45,000 2,164,000 730,000 178,000 2,074,000 4,737,000 74,000 355,000 15,118,000 17,867,000 30,000 1,973,000 7,571,000 10,793,000 174,000 2,820,000 14,565,000 20,993,000 136,000 521,000 3,718,000 9,214,000 2,847,000 2,001,000 1,675,000 16,547,000 637,000 7,657,000 14,256,000 20,537,000 8,964,000 8,756,000 8,967,000 12,342,000  2,687,000 56,000 4,190,000 1,798,000 115,000 77,000 1,526,000 2,528,000 1,538,000 1,042,000 60,000  247,000 475,000 37,000 30,000 23,000 110,000 822,000   4,239,000 5,833,000            
        unbilled revenue — receivable from u.s. government
       1,258,000    3,423,000    4,886,000    6,456,000   8,867,000 9,671,000 7,700,000 8,340,000  9,945,000    8,621,000                                                                        
        receivable from u.s. government
       27,660,000    35,486,000    42,183,000    50,482,000    51,991,000    49,488,000    42,206,000                                                                        
        capitalization and liabilities
                                                                                                       
        common shareholders’ equity
       1,045,581,000    920,051,000    776,109,000    709,549,000    685,947,000    641,673,000    601,530,000    558,223,000    529,945,000    494,297,000    465,945,000    506,801,000    492,404,000    454,579,000    408,666,000    377,541,000    359,430,000    310,503,000    302,129,000    283,734,000    264,094,000    251,465,000    212,487,000 217,404,000 212,970,000 213,315,000 213,279,000 208,095,000 203,206,000 200,551,000 
        contributions in aid of construction — net
       179,277,000    160,306,000    151,414,000    147,918,000    147,482,000    140,332,000    134,706,000    124,385,000 123,686,000   123,602,000    120,518,000    117,810,000    116,629,000    114,916,000    106,450,000    100,037,000    95,460,000 94,214,000 93,265,000  104,344,000 103,512,000 102,912,000  101,593,000    98,657,000          76,223,000 74,047,000   66,928,000 64,555,000         
        accrued pension and other post-retirement benefits
       36,557,000    33,816,000    32,652,000    33,636,000    61,365,000    95,639,000    68,469,000    57,636,000    57,695,000    49,856,000    42,666,000    61,773,000    38,726,000    71,618,000    68,353,000    42,152,000    40,158,000                                
        outstanding: 38,714,426 shares in 2025 and 38,151,027 shares in 2024
        398,010,000                                                                                               
        outstanding: 38,509,038 shares in 2025 and 38,151,027 shares in 2024
         382,900,000                                                                                              
        other accounts receivable
          3,768,000  3,104,000 4,333,000 4,492,000  6,755,000 4,636,000 3,391,000  3,369,000 3,972,000 3,043,000  4,895,000 4,961,000 2,574,000  3,433,000 2,957,000 3,032,000  2,628,000 3,065,000 2,001,000  2,411,000 4,648,000 3,849,000  4,945,000 2,665,000 1,903,000  2,347,000 2,587,000 1,448,000  7,385,000 3,566,000 3,307,000  3,313,000 4,235,000 2,670,000  7,576,000 7,275,000 5,467,000  7,920,000 7,640,000 10,008,000  11,228,000 9,565,000 9,036,000 3,777,000 6,087,000 8,162,000 7,704,000 5,717,000 4,137,000 4,290,000 5,000,000 8,167,000 2,943,000 3,566,000 3,166,000 9,723,000  5,379,000 6,164,000  9,923,000 10,344,000 10,151,000 10,844,000 3,614,000 3,092,000 1,998,000 3,384,000 2,042,000 2,367,000 1,404,000  1,732,000 4,810,000 2,006,000  5,676,000   
        outstanding: 38,508,589 shares in 2025 and 38,151,027 shares in 2024
          382,480,000                                                                                             
        goodwill
            1,116,000 1,116,000 1,116,000 1,116,000 1,116,000 1,116,000 1,116,000 1,116,000 1,116,000 1,116,000 1,116,000 1,116,000 1,116,000 1,116,000 1,116,000 1,116,000 1,116,000 1,116,000 1,116,000 1,116,000 1,116,000 1,116,000 1,116,000 1,116,000 1,116,000 1,116,000 1,116,000 1,116,000 1,116,000 1,116,000 1,116,000 1,116,000 1,116,000 1,116,000 1,116,000 1,116,000 1,116,000 1,116,000 1,116,000 1,116,000 1,116,000 1,116,000 1,116,000 1,116,000 1,116,000 1,116,000 1,116,000 1,116,000 1,116,000 1,116,000 1,116,000 1,116,000 1,116,000 1,116,000 1,116,000 1,116,000 1,116,000 1,116,000 4,437,000 4,437,000 4,610,000 4,610,000 4,610,000 4,610,000 12,393,000 12,393,000 12,431,000 11,354,000  11,593,000 11,606,000  11,778,000 11,799,000 11,820,000 11,841,000 11,862,000 11,883,000 11,903,000 11,925,000 12,276,000 12,276,000          
        total other property and investments
            49,219,000 47,039,000 46,012,000 44,048,000 38,883,000 41,005,000 39,524,000 38,023,000 35,229,000 36,643,000 40,134,000 41,922,000 38,403,000 38,530,000 36,927,000 36,434,000 32,442,000 31,355,000 28,860,000 31,409,000 28,695,000 28,428,000 27,748,000 26,472,000 27,502,000 25,189,000 24,860,000 25,186,000 24,462,000 22,529,000 22,277,000 21,952,000 21,772,000 20,052,000 19,803,000 19,826,000 19,417,000 19,844,000 18,621,000 18,652,000 18,625,000 17,234,000 16,944,000 16,922,000 16,459,000 15,121,000 14,951,000 14,871,000 14,752,000 14,587,000 13,084,000 12,919,000 13,010,000 11,984,000 12,117,000 12,097,000 12,036,000 11,661,000 16,160,000 16,157,000 16,136,000 16,094,000 15,210,000 15,299,000 23,113,000 23,206,000 23,309,000 21,599,000  21,596,000 21,592,000  21,475,000 21,494,000 21,558,000 21,581,000 21,627,000 21,697,000  21,717,000 22,121,000 22,171,000          
        outstanding: 37,796,873 shares in 2024 and 36,980,612 shares in 2023
            325,278,000                                                                                           
        outstanding: 37,457,199 shares in 2024 and 36,980,612 shares in 2023
             297,576,000                                                                                          
        outstanding: 37,228,883 shares in 2024 and 36,980,612 shares in 2023
              280,377,000                                                                                         
        contributions in aid of construction - net
              152,026,000  149,586,000 148,660,000 148,456,000  146,711,000 146,578,000 146,186,000  147,510,000 144,979,000 141,366,000  139,754,000 137,591,000 137,661,000  129,343,000 128,898,000 125,530,000   123,950,000 123,715,000  123,569,000 123,607,000 120,173,000  117,081,000 117,054,000 117,386,000   116,156,000 116,190,000  115,329,000 115,660,000 115,166,000  113,836,000 113,187,000 109,923,000  102,719,000 100,240,000 99,763,000  99,345,000 97,976,000 95,467,000    104,303,000    100,706,000    99,057,000   98,302,000 92,153,000   86,153,000 84,701,000  77,207,000    68,404,000    49,744,000 48,786,000 48,532,000     
        outstanding: 36,980,592 shares in 2023 and 36,962,241 shares in 2022
                262,884,000                                                                                       
        earnings reinvested in the business
                508,453,000 492,836,000   445,493,000 434,569,000 428,141,000  420,671,000 406,033,000 391,865,000  377,198,000 363,065,000 348,742,000  340,539,000 323,818,000 307,203,000  300,910,000 288,118,000 281,185,000  276,344,000 264,739,000 250,855,000  244,735,000 231,336,000 222,833,000  225,696,000 230,544,000 246,022,000  256,355,000 240,571,000 241,582,000  234,536,000 213,758,000 211,847,000  201,822,000 189,941,000 180,173,000  173,923,000 163,581,000 152,873,000  145,937,000 144,140,000 140,013,000  137,794,000 132,737,000 125,587,000  126,481,000 126,259,000 121,307,000   114,996,000 111,716,000  107,311,000 105,613,000 103,239,000  99,866,000 91,408,000 89,447,000  90,554,000 85,912,000 82,572,000         
        outstanding: 36,976,599 shares in 2023 and 36,962,241 shares in 2022
                 262,230,000                                                                                      
        materials and supplies, at weighted-average cost
                  16,282,000  13,444,000 13,151,000 11,943,000  10,240,000 8,773,000 8,751,000  8,699,000 8,168,000 7,343,000  6,090,000                                                                       
        outstanding: 36,976,284 shares in 2023 and 36,962,241 shares in 2022
                  261,792,000                                                                                     
        unbilled revenue — receivable
                   20,663,000    27,147,000    25,836,000    20,482,000    23,588,000                                                                    
        unrealized gains on purchased power contracts
                    7,569,000 8,114,000 7,020,000  7,875,000 2,810,000 1,224,000                                                                             
        outstanding: 36,960,897 shares in 2022 and 36,936,285 shares in 2021
                    260,011,000                                                                                   
        notes payable to bank
                    238,500,000 223,500,000 32,000,000  28,000,000 188,000,000 129,000,000  92,000,000 200,000,000 200,000,000  194,500,000 185,500,000 151,500,000    69,000,000  46,000,000 44,000,000   77,000,000 63,500,000         24,000,000                                                 
        outstanding: 36,956,027 shares in 2022 and 36,936,285 shares in 2021
                     259,656,000                                                                                  
        outstanding: 36,955,633 shares in 2022 and 36,936,285 shares in 2021
                      259,284,000                                                                                 
        unrealized gain on purchase power contracts
                       4,441,000                                                                                
        unrealized loss on purchased power contracts
                           1,537,000 2,518,000 3,827,000 4,280,000 3,171,000 3,022,000 267,000 336,000 311,000  1,710,000 2,625,000 2,941,000 3,837,000 4,493,000 5,460,000 4,901,000 5,581,000 4,933,000 7,245,000 7,053,000 7,246,000 5,662,000 6,176,000 3,339,000     588,000 1,147,000 1,540,000 3,060,000 2,719,000 5,176,000 7,506,000 7,611,000 7,576,000 7,475,000 6,874,000 6,850,000 11,361,000 9,552,000 10,038,000 7,338,000 7,026,000 8,547,000 8,428,000  788,000   1,554,000  1,180,000 944,000  2,468,000                   
        outstanding: 36,936,252 shares in 2021 and 36,889,103 shares in 2020
                        258,264,000                                                                               
        unrealized losses on purchased power contracts
                                                                                                       
        outstanding: 36,931,771 shares in 2021 and 36,889,103 shares in 2020
                         258,101,000                                                                              
        unbilled revenue- receivable from u.s. government
                          9,305,000  10,423,000 7,660,000 8,138,000                                                                         
        outstanding: 36,913,017 shares in 2021 and 36,889,103 shares in 2020
                          257,528,000                                                                             
        outstanding: 36,889,061 shares in 2020 and 36,846,614 shares in 2019
                            256,622,000                                                                           
        outstanding: 36,883,874 shares in 2020 and 36,846,614 shares in 2019
                             256,223,000                                                                          
        outstanding: 36,883,771 shares in 2020 and 36,846,614 shares in 2019
                              255,841,000                                                                         
        outstanding: 36,839,301 shares in 2019 and 36,757,842 shares in 2018
                                255,408,000                                                                       
        materials and supplies, at average cost
                                 6,189,000 5,892,000  5,622,000 5,364,000 4,601,000  5,377,000 5,148,000 4,817,000  4,733,000 5,294,000 5,180,000  5,874,000 4,152,000 3,904,000  3,923,000 3,671,000 4,319,000  5,186,000 6,120,000 7,210,000  6,578,000 4,958,000 4,797,000  2,817,000 2,487,000 2,442,000  2,104,000 2,240,000 2,090,000  1,912,000 1,772,000 1,857,000  1,817,000 1,683,000 1,638,000   1,649,000 1,667,000  1,545,000 1,550,000 1,409,000  1,435,000 1,436,000 1,451,000  1,485,000 1,453,000 1,438,000  1,525,000 1,443,000 1,007,000  1,098,000 1,052,000 1,060,000 
        total regulatory and other assets
                                 61,167,000 56,071,000  39,727,000 35,977,000 34,298,000 31,093,000 133,745,000 135,385,000 128,753,000 130,740,000 153,170,000 146,294,000 138,645,000 135,283,000 175,165,000 157,776,000 151,839,000 146,675,000 125,492,000 123,340,000 119,656,000 120,167,000 163,570,000 170,005,000 171,153,000 164,248,000 175,769,000 162,310,000 163,838,000 163,342,000 131,558,000 130,729,000 120,263,000 119,998,000 130,625,000 129,710,000 136,063,000 134,703,000 144,609,000 139,720,000 136,299,000 130,112,000 105,219,000 107,900,000 107,448,000 102,905,000  106,910,000 102,962,000  78,643,000 77,433,000 74,827,000 73,105,000 68,045,000 70,936,000 70,874,000 71,371,000 73,764,000 73,323,000 75,143,000         
        outstanding: 36,831,696 shares in 2019 and 36,757,842 shares in 2018
                                 254,969,000                                                                      
        outstanding: 36,795,218 shares in 2019 and 36,757,842 shares in 2018
                                  254,297,000                                                                     
        costs and estimated earnings in excess of billings on contracts
                                       41,387,000 34,636,000 32,856,000 42,170,000 41,245,000 37,406,000 35,240,000  32,169,000 22,345,000 28,422,000                                                      
        regulatory and other assets
                                                                                                       
        outstanding: 36,745,039 shares in 2018 and 36,680,794 shares in 2017
                                    253,251,000                                                                   
        unrealized loss on derivative contracts
                                    1,143,000                                                                   
        outstanding: 36,733,506 shares in 2018 and 36,680,794 shares in 2017
                                     251,092,000                                                                  
        outstanding: 36,733,416 shares in 2018 and 36,680,794 shares in 2017
                                      250,339,000                                                                 
        unbilled revenue
                                       26,411,000    24,391,000    19,490,000    21,422,000  20,151,000 16,038,000 18,552,000 21,083,000 20,131,000 14,522,000 16,147,000 21,826,000 25,955,000 16,969,000 16,188,000 22,192,000 23,832,000 21,874,000 20,348,000 23,582,000 26,122,000 18,804,000 18,199,000 23,807,000 24,904,000 17,971,000 17,958,000 19,777,000 21,681,000 17,180,000 16,035,000  20,318,000 16,054,000  18,762,000 18,925,000 15,722,000 15,195,000 17,400,000 17,633,000 12,860,000 13,743,000 16,475,000 14,773,000 11,088,000  15,459,000 13,166,000 11,066,000  15,223,000 13,984,000 11,345,000 
        billings in excess of costs and estimated earnings on contracts
                                       3,911,000 2,466,000 414,000 743,000 2,263,000 5,541,000 5,910,000  3,764,000 7,504,000 9,453,000                                                      
        outstanding: 36,679,175 shares in 2017 and 36,571,360 shares in 2016
                                        249,468,000                                                               
        outstanding: 36,644,758 shares in 2017 and 36,571,360 shares in 2016
                                         248,286,000                                                              
        assets held for sale
                                          26,838,000                                                             
        liabilities directly associated with assets held for sale
                                          938,000                                                             
        accounts receivable-customers, less allowance for doubtful accounts
                                           19,993,000    18,940,000    18,814,000    23,829,000    19,491,000    20,399,000    17,507,000    16,611,000    14,315,000    16,095,000                        
        costs and estimated earnings in excess of billings on uncompleted contracts
                                              30,969,000    25,706,000 34,535,000 37,755,000 33,678,000 46,623,000 45,508,000 41,068,000 52,843,000 42,154,000 37,703,000 32,787,000 23,855,000 36,015,000 34,466,000 28,711,000 30,134,000 33,086,000 36,924,000 34,646,000 29,042,000 26,965,000 19,766,000 17,275,000 14,336,000 15,600,000 11,836,000 5,599,000 5,185,000 3,240,000 3,842,000  5,865,000 4,489,000  2,231,000 3,767,000 3,883,000                 
        billings in excess of costs and estimated earnings on uncompleted contracts
                                              5,540,000    11,350,000 11,736,000 15,699,000 14,553,000 6,496,000 6,852,000 7,815,000 2,299,000 2,702,000 12,572,000 19,346,000 25,887,000 28,557,000 26,973,000 26,612,000 19,033,000 23,052,000 16,808,000 14,212,000 9,722,000 5,896,000 6,315,000 5,479,000 4,420,000 5,271,000 2,094,000 5,280,000 4,405,000 3,234,000 2,641,000  1,739,000 1,790,000  1,910,000 3,090,000 2,649,000                 
        deferred income taxes — current
                                                8,988,000 7,601,000 6,827,000 7,435,000 10,558,000 10,800,000 9,538,000 9,553,000 10,157,000 9,902,000 8,731,000 8,617,000 10,292,000 9,935,000 9,840,000 9,540,000 9,550,000 9,312,000 8,948,000 8,816,000 5,680,000 5,311,000 4,985,000 5,354,000 3,607,000 2,571,000  2,131,000    4,047,000          1,736,000 1,692,000   431,000 1,486,000         
        contributions in aid of construction
                                                116,207,000                                                    46,510,000 44,946,000 44,000,000 
        dividends payable
                                                     8,260,000    7,811,000                                              
        non utility property, at cost
                                                        9,189,000 9,121,000 9,329,000  8,687,000 8,466,000 8,235,000  7,389,000 6,484,000 6,382,000 5,795,000 5,601,000 5,184,000 4,676,000                                 
        assets of discontinued operations
                                                                  51,641,000 50,883,000 50,782,000 49,499,000                                  
        liabilities of discontinued operations
                                                                  27,360,000 27,031,000 27,612,000 27,217,000                                  
        utility plant, at cost
                                                                        1,223,922,000 1,208,720,000 1,190,128,000                             
        regulatory liabilities — current
                                                                       113,000        173,000          3,697,000 3,701,000 3,441,000            
        income tax receivables and prepaids
                                                                    16,019,000                                   
        common shares, no par value, no stated value
                                                                    226,169,000 225,394,000 223,953,000  221,953,000 221,242,000 186,270,000  184,520,000 182,922,000 182,202,000   177,442,000 175,603,000  174,330,000 172,358,000 167,388,000  166,206,000 165,922,000 165,596,000  163,749,000 129,681,000 128,308,000         
        regulatory liabilities - current
                                                                              231,000   3,919,000 3,682,000   5,189,000 5,400,000  4,904,000               
        utility plant, at cost - sum
                                                                       1,196,501,000    1,118,351,000 1,109,105,000 1,070,948,000 1,053,762,000 1,047,786,000  1,012,762,000 1,005,352,000  961,795,000 944,798,000 932,614,000 930,857,000 865,543,000 850,144,000 842,405,000 836,905,000 804,656,000 783,609,000 774,418,000  750,298,000 741,037,000 739,577,000  723,384,000 702,075,000 687,764,000 
        accounts receivable – customers
                                                                          13,633,000                             
        regulatory assets – current
                                                                          17,949,000  11,023,000 7,723,000       3,233,000   6,104,000    7,104,000            
        deferred income taxes – current
                                                                          1,967,000  2,212,000 675,000       4,709,000   1,692,000    2,725,000            
        long-term debt – current
                                                                          640,000  618,000 523,000       575,000   635,000    880,000            
        accounts receivable-customers
                                                                            19,345,000 17,552,000 14,514,000   15,714,000 12,555,000  17,802,000 13,207,000 10,024,000 13,341,000 15,209,000 11,950,000 9,197,000 10,970,000 14,506,000 11,980,000 8,665,000  13,193,000 10,499,000 10,387,000     
        regulatory liabilities – current
                                                                                    4,120,000   5,592,000                
        unrealized gain on purchased power contracts
                                                                             2,953,000 1,289,000       339,000 1,262,000 3,417,000                
        regulatory assets - current
                                                                              4,553,000   4,271,000 4,486,000   6,188,000 5,782,000  4,569,000    4,278,000           
        deferred income taxes - current
                                                                              2,925,000   3,982,000 3,516,000   2,785,000 2,644,000  1,490,000    344,000           
        long-term debt - current
                                                                              601,000   596,000 593,000   571,000 635,000  658,000    820,000    13,305,000 13,305,000 13,305,000     
        cash and equivalents
                                                                                   417,000            2,141,000    2,297,000    
        inter-company receivables
                                                                                   30,561,000            37,111,000        
        investments in subsidiaries
                                                                                   285,097,000            228,680,000    231,737,000    
        other deferred debits
                                                                                   1,839,000            284,000    401,000    
        liabilities and capitalization
                                                                                                       
        note payable to bank
                                                                                   32,000,000                    
        other liabilities
                                                                                   23,000            79,000        
        total liabilities
                                                                                   34,217,000            56,080,000        
        total liabilities and capitalization
                                                                                   317,951,000            268,567,000    248,367,000    
        accumulated other comprehensive loss
                                                                                         -3,259,000 -3,259,000             
        less – accumulated depreciation
                                                                                           -241,717,000            
        other property and investments - sum
                                                                                          21,640,000             
        current assets - sum
                                                                                          46,999,000    39,545,000   41,917,000 46,729,000  55,297,000   
        prepayments
                                                                                           3,466,000 1,777,000 1,966,000 2,677,000         
        taxes payable
                                                                                            9,208,000 7,457,000 1,950,000  2,074,000 566,000 962,000  7,074,000 5,461,000 4,339,000 
        other current assets
                                                                                               351,000    13,932,000    
        taxes receivable
                                                                                                       
        supply cost balancing accounts - current
                                                                                                4,190,000 4,313,000 3,171,000  5,486,000   
        prepayments and other
                                                                                                2,455,000 2,029,000 2,677,000  2,035,000 2,036,000 2,128,000 
        deferred charges and other long-term assets
                                                                                                       
        regulatory tax-related assets
                                                                                                13,916,000 13,259,000 13,028,000  14,510,000 15,033,000 15,330,000 
        supply cost balancing accounts
                                                                                                21,257,000 21,698,000 24,589,000  25,347,000 31,857,000 28,152,000 
        accumulated deferred income taxes - net
                                                                                                60,382,000 56,707,000 56,375,000     
        regulatory tax-related liability
                                                                                                1,987,000 1,998,000 2,005,000  1,739,000 1,750,000 1,761,000 
        other current liabilities
                                                                                                   29,000    
        preferred shares
                                                                                                      1,600,000 
        accounts receivable-customers, less reserves of 1,035 in 2002; 972 in 2001
                                                                                                    14,106,000   
        other deferred charges
                                                                                                    20,211,000 18,684,000 17,280,000 
        deferred charges and other long-term assets - sum
                                                                                                    60,068,000   
        preferred shares subject to mandatory redemption requirements
                                                                                                      280,000 
        capitalization - sum
                                                                                                    453,285,000 448,578,000 447,936,000 
        long-term debt and preferred shares due within one year
                                                                                                    760,000 760,000 800,000 
        reserves for potential disallowance of power costs
                                                                                                    6,388,000   
        other accrued liabilities
                                                                                                    13,452,000 22,300,000 21,600,000 
        current liabilities - sum
                                                                                                    64,836,000 60,282,000 46,354,000 
        accumulated deferred income taxes-net
                                                                                                    57,418,000   
        other credits - sum
                                                                                                    179,637,000 176,872,000 175,828,000 
        accounts receivable -
                                                                                                       
        accumulated deferred income taxes — net
                                                                                                       
        deferred charges
                                                                                                       
        deferred charges - sum
                                                                                                     33,717,000 32,610,000 
      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 2015-12-31 2015-09-30 2015-06-30 2015-03-31 2014-12-31 2014-09-30 2014-06-30 2014-03-31 2013-12-31 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 2007-06-30 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 2004-06-30 2004-03-31 2003-12-31 2003-09-30 2003-06-30 2003-03-31 2002-12-31 2002-09-30 2002-06-30 2002-03-31 
                                                                                                       
          cash flows from operating activities:
                                                                                                       
          net income
        29,948,000 28,741,000 41,167,000 33,690,000 26,844,000 28,435,000 35,834,000 31,864,000 23,135,000 20,428,000 31,565,000 38,521,000 34,407,000 18,629,000 25,654,000 19,951,000 14,162,000 20,350,000 28,153,000 26,576,000 19,268,000 20,211,000 26,530,000 25,612,000 14,072,000 16,700,000 28,006,000 26,784,000 12,852,000 13,789,000 22,952,000 16,348,000 10,782,000 12,868,000 21,006,000 22,792,000 12,701,000 11,212,000 21,639,000 16,742,000 10,150,000 11,608,000 21,079,000 15,648,000 12,149,000 13,512,000 21,171,000 15,354,000 11,021,000 11,780,000 20,839,000 16,602,000 13,465,000 10,291,000 25,117,000 8,625,000 10,115,000 6,709,000 15,599,000 15,962,000 7,589,000 9,080,000 6,652,000 8,975,000 8,490,000 3,402,000 9,698,000 11,499,000 4,932,000 2,866,000 4,552,000 9,283,000 5,304,000 7,322,000 6,984,000 5,339,000 5,572,000 6,271,000 5,899,000 5,033,000 12,234,000 5,735,000 3,764,000 2,667,000 8,018,000 6,710,000 1,146,000 -1,805,000 7,796,000 2,777,000 3,124,000 3,458,000    
          adjustments to reconcile net income to net cash from operating activities:
                                                                                                       
          depreciation and amortization
        12,990,000 12,904,000 12,178,000 11,947,000 11,844,000 11,385,000 11,019,000 10,937,000 10,885,000 10,927,000 10,343,000 10,412,000 11,572,000 11,009,000 10,213,000 10,267,000 10,208,000 10,534,000 9,920,000 9,864,000 9,656,000 9,763,000 9,433,000 9,116,000 8,892,000 8,986,000 9,087,000 6,750,000 10,890,000 10,690,000 10,176,000 10,071,000 9,726,000 9,908,000 9,915,000 9,706,000 9,744,000 10,029,000 9,321,000 9,794,000 9,965,000 10,564,000 10,652,000 10,687,000 10,771,000 9,449,000 10,750,000 10,750,000 10,802,000 10,948,000 9,967,000 9,986,000 10,066,000 12,107,000 10,785,000 9,852,000 10,490,000 9,520,000 9,554,000 9,557,000 9,718,000 12,266,000 8,211,000 8,848,000 8,842,000 8,409,000 8,400,000 8,387,000 8,361,000 8,077,000 7,882,000 7,810,000 7,793,000 7,088,000 7,089,000 6,546,000 6,634,000 6,609,000 6,483,000 5,810,000 4,705,000 5,696,000 5,635,000 4,984,000 5,590,000 5,073,000 5,177,000    4,718,000 4,574,000    
          provision for doubtful accounts
        495,000 484,000 713,000 572,000 581,000 447,000 482,000 372,000 352,000   389,000 458,000 210,000 284,000 291,000 258,000 246,000 325,000 293,000 255,000 560,000 304,000 296,000 273,000 137,000 190,000 124,000 157,000 253,000 266,000 171,000 151,000 269,000 381,000 182,000 157,000 199,000 206,000 173,000 41,000 250,000 250,000 258,000 112,000 210,000 177,000 278,000 326,000 369,000 339,000 249,000 188,000 397,000 388,000 272,000 653,000 162,000 199,000 339,000 238,000 236,000 280,000 206,000 347,000 238,000 244,000 172,000 358,000 224,000 255,000 194,000 212,000 189,000 5,000 299,000 274,000 88,000 176,000 224,000 76,000 90,000 145,000             
          deferred income taxes and investment tax credits
        -720,000 -154,000 -692,000 2,293,000 2,153,000 -4,875,000 4,475,000 -289,000 2,731,000 3,864,000 320,000 3,885,000 -3,286,000 3,901,000 -946,000 -1,704,000 1,552,000 2,356,000 852,000 696,000 -343,000 476,000 533,000 660,000 574,000 4,381,000 3,945,000 618,000 -2,321,000 -3,041,000 -1,167,000 -2,005,000 440,000 3,149,000 3,056,000 -277,000 6,225,000 16,345,000 4,819,000 4,210,000 2,266,000 9,236,000 1,619,000 -1,687,000 1,255,000 35,552,000 -1,583,000 -1,238,000 -415,000 5,496,000 4,827,000 5,519,000 270,000 10,352,000 2,384,000   9,544,000    337,000    2,449,000 4,026,000   -2,319,000 -139,000 2,939,000 1,476,000 1,176,000 2,072,000    220,000 4,728,000 6,234,000 1,665,000 1,554,000 4,843,000 -43,000 -367,000 1,018,000    2,255,000 -1,535,000    
          stock-based compensation expense
        2,953,000 175,000 318,000 343,000 2,723,000 258,000 634,000 347,000 2,505,000 203,000 518,000 323,000 2,254,000 132,000 256,000 278,000 1,905,000 110,000 77,000 449,000 1,930,000 -11,000 347,000 283,000 1,844,000 49,000 289,000 181,000 1,998,000 203,000 2,011,000 639,000 998,000 582,000 669,000 604,000 1,030,000 573,000 505,000 674,000 786,000 637,000 796,000 468,000 853,000 261,000 562,000 594,000 805,000 298,000 576,000 474,000 661,000 454,000 516,000 419,000 542,000 275,000 276,000 567,000 402,000 245,000 285,000 493,000 459,000 291,000 217,000 442,000 383,000 402,000 479,000 413,000 205,000   119,000 102,000                   
          loss on investments held in a trust
        1,272,000 -875,000 -2,475,000 -2,747,000 586,000       -1,456,000 -1,630,000 -1,268,000 1,274,000 3,518,000 1,653,000    -628,000    2,413,000                                                                       
          other — net
        254,000 -1,100,000 152,000 301,000 233,000 -251,000 213,000 97,000 128,000 330,000 48,000 -18,000 -71,000 -150,000 85,000 95,000 83,000 -189,000 58,000 111,000 104,000 -933,000 -136,000 47,000 114,000 382,000 14,000 1,608,000 -1,478,000 1,221,000 -605,000 -264,000 303,000 -723,000 -279,000 -174,000 -349,000 -37,000 -172,000 -379,000 191,000 -209,000 621,000 87,000 339,000 -233,000 219,000 -96,000 165,000 -407,000 128,000       -1,220,000 628,000     585,000 88,000 114,000 352,000               -652,000 545,000   786,000 184,000         
          changes in assets and liabilities:
                                                                                                       
          accounts receivable — customers
        -1,915,000 7,772,000 -5,112,000 -8,743,000 3,105,000 6,273,000 -5,833,000 -10,551,000 5,001,000 1,000,000 -5,991,000 -6,096,000 4,455,000 7,184,000 -4,215,000 -5,172,000 7,627,000 4,060,000 -6,661,000 -7,798,000 5,711,000 1,487,000 -4,245,000 -6,429,000 -4,085,000 7,044,000 -4,033,000 -6,884,000 5,755,000 6,267,000 -3,550,000 -7,578,000 6,743,000 3,012,000 -4,275,000 -10,505,000 4,097,000 2,721,000 -2,706,000 -4,390,000 2,625,000 2,947,000 -3,096,000 -2,732,000 1,958,000 7,324,000 -1,438,000 -5,535,000 3,628,000 6,192,000 -3,159,000 -10,337,000 1,998,000    911,000    609,000    3,533,000                 -2,843,000 1,661,000   -3,315,000 3,093,000         
          unbilled receivable
        -5,243,000 1,895,000 202,000 8,470,000 -6,576,000 -792,000 -1,293,000 881,000 -2,264,000 1,700,000 -2,050,000 2,182,000 -3,115,000  450,000 1,492,000 2,451,000  4,692,000 -5,289,000 3,161,000  -5,874,000 -1,949,000 1,417,000  -3,131,000 -2,433,000 7,957,000  -534,000 3,278,000 -1,548,000  -1,483,000 -4,180,000 4,221,000  -2,672,000 276,000 1,257,000  -3,960,000 -163,000 3,636,000                                                   
          other receivables
        1,881,000 -2,433,000 1,424,000                                                                                             
          receivables from the u.s. government
        16,632,000 -7,575,000 6,263,000 -1,448,000 5,186,000 6,796,000 7,048,000 -5,757,000 6,916,000 4,555,000 334,000 -5,080,000 -5,842,000 -10,971,000 -1,325,000 2,069,000 4,589,000 3,134,000 -4,263,000 -2,569,000 -1,015,000 945,000 -2,247,000 -3,291,000 704,000 5,304,000 -1,251,000 -587,000 -2,322,000 -6,158,000 -311,000 -7,878,000 -6,629,000 3,387,000 3,788,000 -1,879,000 -554,000 1,017,000 -1,648,000 -3,760,000 1,785,000 -927,000 2,354,000 656,000 -1,235,000                                                   
          materials and supplies
        -241,000 549,000 -1,063,000 -376,000 -376,000 1,281,000 548,000 -744,000 1,349,000 -1,356,000 604,000 -540,000 -1,659,000 -1,179,000 -293,000 -1,208,000 220,000 -1,923,000 -1,467,000 -22,000 -132,000 80,000 -531,000 -825,000 -914,000 -339,000 99,000 -297,000 -117,000 -153,000 -258,000 -763,000 194,000 582,000 -229,000 -331,000 -523,000 439,000 561,000 -114,000 235,000 459,000 -1,722,000 -248,000 -316,000 335,000 -252,000 648,000 239,000 628,000 934,000               12,000 -140,000 85,000 252,000          12,000 14,000 1,000 15,000 45,000 -11,000 -32,000 -15,000 -92,000         
          prepayments and other assets
        -6,126,000 1,361,000 3,170,000 2,823,000 -5,975,000 64,000 2,459,000 3,282,000 -5,773,000 1,178,000 3,093,000 2,966,000 -5,656,000 2,626,000 1,735,000 3,369,000 -4,584,000 2,462,000 858,000 2,029,000 -4,026,000 1,339,000 1,747,000 2,000,000 -3,400,000 949,000 1,128,000 3,230,000 -1,329,000 800,000 -148,000 2,007,000 -3,178,000 -240,000 -299,000 206,000 -1,308,000 3,388,000 254,000 833,000 -2,236,000 464,000 184,000 4,242,000 -3,310,000                                                   
          contract assets
        -1,408,000 -3,935,000 -4,152,000 1,128,000 -2,900,000 -1,055,000 -1,530,000 -4,579,000 -106,000 -370,000 1,502,000 -2,037,000 1,509,000 -1,402,000 597,000 -4,391,000 -199,000 63,000 1,488,000 2,447,000 -3,763,000 -5,680,000 6,912,000 1,896,000 -3,716,000 3,224,000 3,689,000 -1,358,000 -1,576,000 -5,404,000 -1,286,000 6,412,000 6,219,000                                                               
          regulatory assets/liabilities
        11,802,000 15,812,000 18,895,000 10,274,000 1,143,000 9,865,000 11,623,000 -767,000 -2,234,000 4,697,000 -15,195,000 -35,012,000 -35,863,000                                                                                   
          accounts payable
        -3,306,000 4,683,000 2,431,000 2,855,000 -2,387,000 3,436,000 -892,000 5,679,000 -3,071,000 -2,754,000 1,561,000 -1,127,000 -8,542,000 12,342,000 -2,084,000 1,168,000 341,000 -5,805,000 658,000 9,533,000 -7,267,000 2,691,000 2,684,000 4,085,000 -4,112,000 -2,292,000 1,960,000 6,214,000 -6,131,000 3,390,000 1,365,000 2,490,000 -5,963,000 -979,000 4,389,000 -540,000 1,488,000 -1,897,000 -4,102,000 5,648,000 -3,091,000 -3,257,000 3,425,000 3,276,000 -2,765,000 -7,072,000 4,431,000 1,649,000 -630,000 -7,555,000 3,391,000 3,750,000 2,229,000 -8,681,000   2,745,000  -7,508,000 9,494,000 89,000 -5,427,000 3,614,000    -889,000   1,364,000 1,066,000     700,000 2,409,000 879,000 343,000 1,182,000 -311,000 4,322,000 -3,746,000 -759,000 3,438,000 2,145,000 -5,392,000    -2,603,000     
          income taxes receivable/payable
        10,549,000 -26,174,000 13,368,000 7,249,000 6,310,000 2,388,000 -6,176,000 -851,000 4,615,000 -28,128,000 9,189,000 8,559,000 12,873,000 -7,426,000 2,117,000 422,000 -1,592,000 981,000 4,202,000 -7,163,000 -274,000 3,790,000 -2,356,000 7,510,000 3,326,000 -7,371,000 222,000 -2,209,000 5,572,000 -2,123,000 11,000 2,144,000 2,676,000 -10,451,000 -5,432,000 26,236,000 2,853,000 -23,646,000 7,850,000 5,195,000 3,608,000 -13,409,000 5,384,000 11,066,000 6,589,000 -25,861,000 3,219,000 5,350,000 5,644,000 -6,655,000 -488,000 -639,000 15,111,000 -17,125,000   7,603,000    5,193,000   -4,951,000 6,702,000   -507,000 1,542,000     2,321,000 829,000  2,091,000 419,000 1,140,000 -2,180,000 -448,000 7,595,000 1,594,000             
          contract liabilities
        -117,000 1,315,000 133,000 2,540,000 2,085,000 2,013,000 2,410,000 586,000 -699,000 756,000 11,000 25,000 -343,000 -350,000 931,000 112,000 -47,000 -298,000 -133,000 -361,000 -751,000 -6,870,000 -1,899,000 -106,000 -492,000  1,125,000                                                                     
          accrued pension and other postretirement benefits
        -193,000  -3,056,000 300,000 434,000  -2,244,000 669,000 693,000  -1,993,000 1,021,000 1,020,000  -3,153,000 12,000 71,000  -2,179,000 1,799,000 1,796,000  -2,561,000 1,387,000 1,306,000  -2,552,000                    -6,748,000 1,433,000 1,692,000  -1,619,000 712,000 3,021,000  -1,300,000 1,234,000 3,145,000   -547,000 2,292,000   971,000 1,772,000   768,000 1,887,000                           
          other liabilities
        2,131,000 -6,097,000 8,514,000 -5,591,000 -2,578,000 1,961,000 5,760,000 -5,655,000 1,870,000 -3,932,000 5,621,000 -4,872,000 3,599,000 -4,721,000 6,468,000 -8,070,000 1,574,000 -5,000 3,755,000 -4,851,000 3,101,000 -2,493,000 7,997,000 -3,265,000 354,000 -2,765,000 6,042,000 -5,714,000 -2,222,000 -2,948,000 4,396,000 -2,035,000 -341,000 -3,420,000 5,114,000 -470,000 -2,813,000 112,000 5,306,000 -3,196,000 873,000 -3,463,000 6,921,000 -3,452,000 935,000 -3,952,000 4,532,000 -3,500,000 1,572,000 -3,090,000 7,788,000 -2,729,000 1,155,000 -2,911,000   1,836,000 -4,030,000   1,937,000    1,063,000 3,867,000 4,430,000 -1,575,000 3,861,000  3,009,000 -3,295,000 3,448,000  4,226,000  3,536,000 -173,000 833,000 3,792,000 -965,000 172,000 4,699,000 1,150,000 3,546,000 -8,001,000 3,661,000         
          net cash provided
        71,638,000 27,716,000 92,378,000 64,575,000 45,061,000 64,516,000 63,701,000 24,704,000 45,811,000 11,165,000 38,754,000   27,866,000 33,028,000 18,879,000 38,026,000 33,661,000 40,779,000 16,468,000 24,676,000 34,327,000 41,580,000 30,609,000 15,654,000 32,560,000 39,637,000 15,287,000 29,380,000 28,369,000 43,334,000 29,343,000 35,728,000 24,323,000 44,790,000 47,417,000 28,022,000 19,440,000 28,970,000 20,895,000 27,644,000 9,047,000 23,096,000 24,507,000 38,495,000 43,201,000 29,189,000 49,948,000 40,932,000 48,432,000 53,659,000 2,615,000 31,005,000 9,915,000 45,860,000 19,129,000 26,590,000 17,530,000 29,698,000 12,180,000 20,759,000 16,630,000 7,593,000 9,680,000 19,861,000 22,180,000 11,285,000 19,340,000 19,789,000 18,804,000 15,688,000 16,460,000 11,194,000 16,154,000 14,193,000 5,910,000 18,593,000 10,284,000 16,772,000 9,418,000 12,298,000 15,080,000 17,809,000 2,286,000 18,972,000 9,961,000 19,118,000     -3,400,000    
          cash flows from investing activities:
                                                                                                       
          capital expenditures
        -49,051,000 -63,695,000 -54,646,000 -50,916,000 -67,565,000 -58,483,000 -64,179,000 -61,748,000 -47,550,000 -52,409,000 -47,482,000 -39,312,000 -49,337,000 -44,184,000 -45,504,000 -41,382,000 -35,170,000 -37,794,000 -30,574,000 -39,054,000 -37,093,000 -35,599,000 -32,237,000 -29,043,000 -33,544,000 -40,852,000 -29,933,000 -40,593,000 -40,562,000 -39,233,000 -28,546,000 -28,418,000 -30,364,000 -35,230,000 -32,000,000 -21,902,000 -23,994,000 -29,960,000 -34,573,000 -35,880,000 -29,454,000 -27,475,000 -25,641,000 -16,817,000 -17,390,000                                                   
          other investing activities
        195,000 -1,148,000 282,000 -47,000 194,000 -1,444,000 223,000 265,000 136,000 -1,176,000 125,000 655,000 172,000  185,000 15,000 121,000  165,000 -49,000 113,000  78,000 -63,000 121,000  95,000 -29,000 213,000  -1,590,000 -32,000 130,000  -1,531,000    -1,323,000 -46,000 -79,000  -55,000 -1,330,000 -71,000                                                   
          cash flows from financing activities:
                                                                                                       
          proceeds from issuance of common shares, net of issuance costs
        6,230,000 26,846,000 14,625,000 -125,000 25,715,000 29,509,000 26,882,000 16,335,000 16,088,000                                                     410,000 482,000   443,000 467,000             188,000    1,516,000            
          receipt of advances for and contributions in aid of construction
        5,660,000 6,668,000 2,781,000 2,559,000 1,973,000 2,717,000 2,806,000 3,340,000 2,332,000 4,684,000 2,599,000 2,542,000 2,064,000 1,412,000 1,378,000 2,316,000 1,795,000 1,796,000 3,799,000 4,821,000 2,016,000 1,762,000 2,946,000 1,108,000 3,522,000 1,911,000 1,970,000 4,363,000 1,927,000 1,188,000 1,020,000 2,260,000 1,083,000 1,143,000 988,000 4,066,000 1,078,000 3,758,000 827,000 1,021,000 1,054,000 803,000 1,177,000 1,037,000 714,000 2,441,000 983,000 2,658,000 1,516,000 2,082,000 1,768,000 4,132,000 4,151,000 4,546,000 3,052,000 1,511,000 538,000 1,340,000 2,652,000 2,310,000 1,187,000 1,577,000 1,818,000 1,785,000 889,000 2,385,000 213,000 520,000 332,000 553,000 563,000 1,899,000 1,877,000 2,890,000 1,501,000 2,092,000 826,000 3,051,000 2,841,000 8,638,000 2,222,000 4,097,000 4,031,000 7,148,000 3,133,000 2,271,000 2,904,000 4,233,000 4,760,000 1,243,000 1,684,000     
          refunds on advances for construction
        -1,147,000 -1,073,000 -961,000 -2,364,000 -1,435,000 -996,000 -925,000 -2,246,000 -752,000 -701,000 -866,000 -2,261,000 -712,000 -1,380,000 -767,000 -2,341,000 -833,000 -1,053,000 -691,000 -2,353,000 -569,000 -328,000 -634,000 -2,176,000 -591,000 -326,000 -605,000 -3,512,000 -562,000 -663,000 -607,000 -2,130,000 -486,000 -412,000 -609,000 -2,101,000 -767,000 -472,000 -873,000 -2,133,000 -443,000 -499,000 -590,000 -2,142,000 -429,000 -407,000 -544,000 -2,066,000 -452,000 -383,000 -616,000                               -1,888,000 -484,000 -168,000 -660,000 -1,862,000 -425,000 -226,000 -935,000 -1,797,000 -433,000     
          repayments of long-term debt
        -124,000 -182,000 -153,000 -119,000 -114,000 -141,000 -115,000 -83,000 -142,000 -109,000                                 -15,104,000 -98,000 -76,000  -256,000                               -131,000 -222,000        -57,000     
          proceeds from the issuance of long-term debt, net of issuance costs
         -35,000 99,434,000 49,807,000 -49,000   129,665,000 -37,000 6,000       -9,000                                                                          
          net changes in notes payable to banks
        -9,000,000 17,000,000 -29,000,000 -96,000,000 -40,000,000 -8,000,000 2,000,000 -42,500,000 4,000,000 59,812,000 30,445,000                                                                                     
          dividends paid
        -19,699,000 -19,562,000 -19,408,000 -17,926,000 -17,762,000 -17,633,000 -17,455,000 -16,024,000 -15,905,000 -15,901,000 -15,900,000 -14,699,000 -14,695,000 -14,692,000 -14,690,000 -13,489,000 -13,485,000 -13,482,000 -13,480,000 -12,366,000 -12,361,000 -12,358,000 -12,356,000 -11,250,000 -11,242,000 -11,236,000 -11,234,000 -10,119,000 -10,113,000 -10,106,000 -10,102,000 -9,367,000 -9,362,000 -9,353,000 -9,349,000 -8,861,000 -8,854,000 -8,850,000 -8,189,000 -8,188,000 -8,181,000 -8,193,000 -8,326,000 -8,016,000 -8,155,000 -8,180,000 -8,232,000 -7,853,000 -7,846,000 -7,840,000 -7,836,000                               -3,774,000 -3,771,000  -3,376,000 -3,370,000 -3,362,000         
          other financing activities
        -1,371,000 -1,000 -8,000 -19,000 -1,301,000  -4,000 -27,000 -1,111,000  -14,000 -16,000 -883,000  -31,000 -17,000 -1,188,000  -16,000 -2,000 -1,269,000  -48,000 -1,809,000  -8,000 -4,000 -1,569,000  -3,000 -4,000 -1,210,000  17,000    -16,000    -57,000                                                     
          net change in cash and cash equivalents
        3,331,000 -7,249,000 5,826,000 -982,000 -5,432,000 10,192,000 12,886,000 -13,424,000 2,934,000 5,469,000 7,578,000 -1,100,000 -3,871,000 3,739,000 -8,567,000 699,000 5,163,000 -2,178,000 1,782,000 -1,592,000 -29,786,000 28,610,000 1,631,000 6,067,000 -905,000 -9,064,000 8,882,000 -328,000 -5,297,000    5,770,000    185,000  -1,729,000 -3,939,000 4,093,000  -16,608,000 -30,813,000 -1,313,000  -19,987,000                                                 
          cash and cash equivalents, beginning of period
        18,824,000  26,661,000  14,073,000  5,997,000  4,963,000  36,737,000  1,334,000  7,141,000  214,000  436,000  4,364,000  75,988,000  38,226,000  23,486,000    1,315,000  -1,297,000 5,494,000  1,685,000  7,283,000  1,698,000 3,223,000  13,032,000  4,303,000  12,775,000  6,720,000 11,677,000  30,496,000 
          cash and cash equivalents, end of period
        22,155,000  5,826,000 -982,000 21,229,000  12,886,000 -13,424,000 17,007,000  7,578,000 -1,100,000 2,126,000  -8,567,000 699,000 10,126,000  1,782,000 -1,592,000 6,951,000  1,631,000 6,067,000 429,000  8,882,000 -328,000 1,844,000  -3,581,000 -427,000 5,984,000  4,537,000 1,503,000 621,000  -1,729,000 -3,939,000 8,457,000  -16,608,000 -30,813,000 74,675,000  -19,987,000 2,913,000 74,936,000  17,637,000 -24,269,000 32,794,000  36,267,000 241,000 6,558,000  -6,047,000 6,973,000 4,289,000  1,903,000 1,948,000 5,080,000  -2,397,000 -15,139,000 24,893,000  870,000 -394,000 765,000 -3,778,000 9,052,000  -2,843,000 -4,966,000 14,400,000  587,000 -721,000 5,825,000  -347,000 -2,062,000 9,011,000  5,711,000 -1,582,000 7,239,000  204,000 -983,000 12,452,000 
          non-cash transactions:
                                                                                                       
          accrued payables for investment in utility plant
        36,009,000  3,202,000 5,431,000 31,099,000  5,641,000 -2,894,000 38,435,000  -444,000 5,985,000 29,746,000  137,000 3,272,000 34,101,000  1,343,000 -942,000 28,700,000  515,000 4,144,000 15,748,000  2,166,000 -3,774,000 27,207,000  5,687,000 2,106,000 13,910,000  4,201,000 5,491,000 12,286,000  -1,645,000 471,000 21,017,000  756,000 2,107,000 11,003,000                                                   
          property installed by developers and conveyed
        1,806,000  2,855,000 12,701,000 1,958,000  1,346,000 1,415,000 2,210,000  746,000 445,000 364,000  256,000 125,000 130,000  2,692,000 640,000 2,761,000  1,326,000 679,000 856,000  135,000 563,000 678,000  1,039,000 508,000 421,000  771,000 924,000 101,000  508,000 3,539,000 806,000  921,000 495,000 289,000                                                   
          accrued pension and other post-retirement benefits
                                    1,686,000 1,219,000 -4,800,000 1,139,000 1,356,000 1,407,000 -5,149,000 1,648,000 1,216,000 1,240,000 -4,083,000 1,466,000 1,088,000 1,744,000 -4,035,000 808,000 2,099,000                                                   
          cash and cash equivalents, beginning of year
                                                                                                       
          cash and cash equivalents, end of year
                                                                                                       
          other accounts receivable
            2,626,000 -3,610,000 1,234,000 159,000 1,848,000 299,000 -2,119,000 -1,245,000 824,000 -1,064,000 641,000 -929,000 3,467,000 -487,000 66,000 -2,387,000 1,386,000 -867,000 -476,000 75,000 64,000 -259,000 437,000 -1,064,000 1,100,000 -698,000 2,237,000 -799,000 4,411,000 280,000 -2,440,000 -829,000 1,318,000 -1,269,000 244,000 -1,153,000 945,000 4,537,000 -4,542,000 -259,000 1,507,000 -1,530,000 1,016,000 -1,192,000 2,735,000 3,007,000 -283,000 -1,806,000 1,585,000 1,449,000 2,892,000 -914,000 1,989,000     503,000   527,000 -1,533,000 51,000 608,000 1,241,000  501,000 -532,000 886,000    160,000 -302,000 585,000   -1,198,000 1,250,000 -1,643,000 25,000 -963,000 9,245,000    403,000     
          other
                                            -1,292,000    -1,497,000    -809,000 210,000                                                  
          gain on investments held in a trust
              -2,070,000 -976,000 -2,070,000         -1,974,000 -105,000    -1,205,000    -325,000                                                                     
          benefit from doubtful accounts
                                                                                                       
          (gain) loss on investments held in a trust
                                                                                                       
          net cash used
                     -45,367,000 -45,319,000 -41,367,000 -35,049,000 -38,600,000 -30,409,000 -39,103,000 -36,980,000 -36,973,000 -32,154,000 -29,106,000 -33,377,000 -42,523,000 -29,803,000 -40,520,000 -40,349,000 -39,285,000 -30,102,000 -28,421,000 -30,234,000 -35,160,000 -33,531,000 12,614,000 -23,954,000 -29,866,000 -35,896,000 -35,926,000 -29,533,000 -28,834,000 -25,696,000 -18,147,000 -17,461,000 -18,649,000 -19,595,000 -15,168,000 -20,647,000 -28,305,000 -29,093,000                               -17,008,000 -18,826,000 -26,685,000 -26,939,000 -17,193,000 -13,399,000         
          net cash from
                    6,964,000                                                                                   
          net change in notes payable to banks
                    -77,000,000 36,000,000 18,000,000 2,000,000 16,000,000 15,500,000 2,000,000 59,000,000 -5,200,000 42,200,000 -157,000,000 17,000,000 27,000,000 10,500,000 9,000,000 34,000,000 56,000,000 25,500,000 -7,000,000 8,000,000 10,000,000 13,000,000 2,000,000       13,000,000                    3,700,000 17,000,000 19,200,000 3,600,000     9,200,000 8,750,000 9,150,000 10,400,000  4,000,000   -3,000,000 4,000,000  6,000,000 2,000,000 2,000,000 17,000,000 -26,000,000 7,000,000 -9,000,000 23,000,000       
          loss on sale of assets
                                                                                                       
          unbilled revenue — receivable
                                                                                                       
          proceeds from sale of assets
                             37,000 5,000 46,000 32,000 35,000   9,000 34,000                                                               
          other investments
                                                     171,000 -1,544,000 -79,000 -116,000 15,000 -1,223,000                                             
          proceeds from stock option exercises
                             30,000 103,000 50,000 291,000 75,000 198,000 8,000 340,000 25,000 360,000 489,000 35,000 25,000 84,000 126,000 452,000 234,000 220,000 292,000                 487,000 319,000 51,000 242,000 57,000 10,000 24,000 613,000 14,000 39,000 1,115,000 12,000 36,000 962,000 3,231,000 190,000                 
          regulatory assets
                      -5,661,000 -2,691,000 -5,713,000  483,000 -5,309,000 -3,493,000  6,628,000 -4,019,000 -2,976,000  -5,180,000 -9,945,000 -3,987,000  10,705,000 5,524,000 6,716,000 14,282,000 14,199,000 5,117,000 -8,972,000 8,213,000 -1,324,000 -6,602,000 -5,897,000 -515,000 -12,414,000 -8,881,000 -4,612,000                                                   
          retirement or repayments of long-term debt
                       -102,000 -103,000 -200,000 -28,057,000 -99,000 -1,000 -125,000 -118,000 -92,000 -125,000 -114,000 -40,086,000 -129,000 -108,000 -89,000 -9,000 -129,000 -108,000 -83,000 -8,000 -136,000 -92,000 -77,000 -9,000 -59,000 -100,000 -69,000                                                   
          net cash (used) provided
                         2,761,000   -17,482,000             4,390,000 -6,722,000 -58,528,000 -3,883,000   11,092,000 5,982,000    -22,347,000                                                   
          gain on sale of assets
                              -5,000 -4,000 -17,000 -124,000   -42,000 -25,000   -17,000                                                             
          costs and estimated earnings in excess of billings on contracts
                                         -10,457,000 -176,000   -2,159,000 -4,659,000   -10,298,000 1,529,000                                                     
          contract liabilities / billings in excess of costs and estimated earnings on contracts
                                    2,896,000 -1,412,000 1,899,000 460,000 2,672,000                                                               
          tax benefits from stock-based awards
                                                                                                       
          net increase in cash and cash equivalents
                                      -3,581,000                  36,710,000 12,064,000 17,637,000 -24,269,000 9,308,000 -19,580,000 34,952,000 1,556,000 5,243,000  -6,047,000   -3,437,000 1,903,000 1,948,000 3,395,000  -2,397,000 -15,139,000 17,610,000     -3,778,000 5,829,000    1,368,000 7,341,000 587,000 -721,000 1,522,000          204,000 -983,000 -18,044,000 
          net cash used provided
                                                                                                       
          unbilled revenue
                                                       -4,113,000 2,514,000 2,531,000 -952,000 -5,609,000 1,625,000                             -4,773,000 883,000 2,732,000 -1,702,000 -3,685,000 1,626,000    1,181,000     
          billings in excess of costs and estimated earnings on contracts
                                         1,445,000 2,052,000   -3,278,000 -369,000   -3,740,000 -1,949,000                                                     
          repurchase of common shares
                                                 -9,659,000 -21,387,000 -27,956,000 -13,891,000 -10,079,000 -6,795,000                                                 
          net decrease in cash and cash equivalents
                                                                                           -2,299,000 -347,000 -2,062,000 -3,764,000  5,711,000 -8,302,000 -4,438,000     
          costs and estimated earnings in excess of billings on uncompleted contracts
                                            -989,000    1,277,000    8,916,000 -388,000 -5,353,000 11,951,000 358,000 -5,805,000 7,468,000       -3,245,000 2,491,000 230,000 1,442,000                                   
          billings in excess of costs and estimated earnings on uncompleted contracts
                                            -1,520,000    1,776,000    -386,000 -3,963,000 1,146,000 8,057,000 -356,000 -963,000 5,516,000       250,000 428,000 4,123,000 18,000 680,000 -2,010,000 872,000 7,989,000 1,560,000 1,616,000 1,461,000 1,298,000 2,491,000 1,892,000                         
          other investing activities — net
                                            40,000                                                           
          proceeds from notes payable to banks
                                            6,000,000  13,500,000 20,500,000 15,000,000                                                       
          proceeds from sale of property
                                                                     702,000 32,000 69,000 17,000         243,000 380,000                     
          proceeds from issuance of long-term debt, net of issuance costs
                                                             -626,000    1,000 -3,000       -27,000                             
          net gain on sale of property
                                                                                                       
          impairment and other charges
                                                                     7,623,000                                  
          prepayments and other current assets
                                                     1,516,000 281,000 334,000 -2,395,000 1,198,000 510,000 62,000 140,000     937,000 231,000 -56,000 1,086,000  -396,000 513,000 863,000  250,000 107,000 607,000  99,000 190,000 533,000   -1,392,000 771,000 228,000 604,000 -1,416,000 335,000 581,000 968,000        396,000     
          other assets
                                                     8,278,000 11,224,000 5,248,000 2,872,000 15,434,000 11,417,000                       42,000 574,000       -405,000 741,000 -2,327,000 -743,000 441,000 -487,000         
          tax benefits from exercise of stock-based awards
                                                                                 119,000 3,000 95,000 245,000 852,000 45,000                 
          receivable from the u.s. government
                                                      -55,000 4,082,000 -463,000  -12,537,000 -1,007,000 8,251,000               -499,000 2,123,000   2,282,000 244,000                       
          construction expenditures
                                                      -18,094,000 -15,089,000 -20,531,000  -27,870,000                               -17,008,000 -18,826,000 -26,685,000 -26,939,000 -17,193,000 -13,399,000 -23,307,000 -16,449,000 -9,426,000 -8,029,000     
          proceed from sale of property
                                                          12,000                                           
          proceeds from issuance of common shares and stock option exercises
                                                      151,000 18,000 201,000  116,000 1,207,000 625,000    1,403,000  1,397,000                                     
          proceeds from issuance of long-term debt
                                                                                                      
          regulatory assets — supply cost balancing accounts
                                                       -106,000 818,000  -1,003,000 -377,000 1,371,000  1,960,000 4,163,000 3,437,000  5,050,000 4,245,000 5,079,000  6,219,000 4,686,000 3,815,000  4,806,000               -550,000 1,078,000   3,598,000 221,000         
          increase in notes payable to bank
                                                        24,000,000                                               
          gain on ccwc, net of taxes, included in discontinued operations
                                                                                                       
          regulatory assets - supply cost balancing accounts
                                                                                      487,000                 
          proceeds from sale of ccwc
                                                                                                       
          adjustments to reconcile net income to net cash provided by operating activities:
                                                                                                       
          less cash and cash equivalents of discontinued operations
                                                                    1,918,000 58,000 814,000                                 
          cash and cash equivalents of continuing operations
                                                                6,558,000 -3,900,000 -6,047,000 8,891,000 2,371,000 -3,495,000 1,089,000                                 
          gain on sale of ccwc, net of taxes, included in discontinued operations
                                                                                                       
          proceeds from the sale of ccwc
                                                                  578,000                                     
          gain on sale of property
                                                                                                       
          inter-company receivable/payable
                                                                                                       
          income taxes receivable/payable from/to parent
                                                                                                       
          net change in inter-company borrowings
                                                                                                       
          equity loss (earnings) from investment
                                                                                                       
          loss on settlement for removal of wells
                                                                                                      
          loss on sale of property
                                                                                                       
          gain on sale of ccwc, net of taxes
                                                                                                       
          proceeds from issuance of common shares
                                                                    455,000    515,000    462,000  284,000 208,000 216,000 235,000 272,000  602,000 494,000 529,000   237,000 318,000   595,000 609,000 247,000 1,000       
          unrealized gain on purchased power contracts
                                                                                         -459,000 -3,015,000  224,000           
          goodwill impairment charge
                                                                                                       
          business acquisition
                                                                                                       
          adjustments for non-cash items:
                                                                                                       
          income taxes receivable/payable/prepaids
                                                                                                       
          proceeds from issuance of long-term debt, net of issuance cost
                                                                            39,777,000                           
          equity earnings from investment
                                                                                                       
          other – net
                                                                            65,000  122,000                         
          accounts receivable – customers
                                                                            324,000    1,368,000                       
          regulatory assets – supply cost balancing accounts
                                                                            3,528,000                           
          tax benefits from exercise or conversion of stock-based awards
                                                                                7,000                       
          unrealized loss on purchased power contracts
                                                                                     923,000 2,155,000        -557,000         
          cash received on financing portion of purchased power contracts
                                                                                   674,000 674,000 666,000 667,000 674,000 674,000 666,000 667,000 667,000 681,000   222,000        
          net gain on disposal of property
                                                                                                       
          impairment loss on assets removed from ratebase
                                                                                                       
          dividend equivalent rights
                                                                                                       
          tax benefits from payment of dividend equivalent rights
                                                                                 12,000 16,000 33,000 28,000                   
          stock based compensation expense
                                                                                 337,000 193,000    68,000                 
          other - net
                                                                                 328,000 192,000  164,000 98,000 323,000            171,000     
          accounts receivable - customers
                                                                                  2,256,000    3,141,000            402,000     
          unrealized loss (gain) on purchased power contracts
                                                                                   1,185,000                    
          deferred income taxes, net regulatory asset for flow-through taxes, and investment tax credits
                                                                                    -943,000                   
          dividend equivalent rights paid
                                                                                                       
          refund of water right lease revenues, net of taxes
                                                                                                       
          non-cash compensation expense on stock units issued
                                                                                       13,000 13,000 89,000 8,000 5,000 16,000           
          impairment loss on assets removed from rate-base
                                                                                                      
          impairment loss on assets removed from rate base
                                                                                                       
          prepayments
                                                                                           -1,689,000 189,000 711,000 1,109,000         
          redemption of preferred shares
                                                                                                       
          common and preferred dividends paid
                                                                                               -3,360,000 -3,361,000 -2,865,000 -3,850,000     
          taxes payable
                                                                                            1,751,000 5,507,000 -834,000    1,504,000     
          repayment of long-term debt
                                                                                            -210,000 -122,000 -209,000  -656,000       
          non-cash activities - supplemental disclosures:
                                                                                                       
          adoption of new accounting standard for asset retirement obligtions:
                                                                                                       
          cumulative effect of adoption - regulatory asset
                                                                                                       
          utility plant
                                                                                                       
          asset retirement obligations
                                                                                                       
          non-cash activities — supplemental disclosures:
                                                                                                       
          adoption of new accounting standard for asset retirement obligations:
                                                                                                       
          cumulative effect of adoption — regulatory asset
                                                                                                       
          net utility plant
                                                                                                       
          supply cost balancing accounts
                                                                                                  703,000     
          deferred charges and other assets
                                                                                                  -1,322,000     
          intercompany payable
                                                                                                  -7,098,000     
          other current liabilities
                                                                                                  2,413,000     
          acquisition of chaparral city water company, net of cash acquired
                                                                                                       
          acquisition of water rights
                                                                                                       
          proceeds from issuance of common and preferred shares
                                                                                                       
          taxes and interest paid:
                                                                                                       
          income taxes paid
                                                                                                       
          interest paid
                                                                                                       
          property installed by developers and conveyed to company
                                                                                                       
          components of cash paid for chaparral acquisition:
                                                                                                       
          fair value of assets acquired, including goodwill of 13,249
                                                                                                       
          liabilities assumed
                                                                                                       
          cash paid
                                                                                                       
          less cash acquired
                                                                                                       
          net cash paid for acquisition
                                                                                                       
          accounts receivable
                                                                                                       
          investing activities:
                                                                                                       
          financing activities:
                                                                                                       
          issuance of securities
                                                                                                       
          receipt of advances and contributions
                                                                                                       
          repayments of long-term debt, net of redemption of preferred shares
                                                                                                       
          changes in notes payable to banks
                                                                                                       
          cash flows from — operating activities:
                                                                                                       
          cash flows from -
                                                                                                       
          operating activities: