7Baggers

Genie Energy Ltd
(NYSE:GNE) 

GNE stock logo

Genie Energy Ltd., through its subsidiaries, supplies electricity and natural gas to residential and small business customers in the United States, Europe, and Asia. The company operates in three segments: Genie Retail Energy (GRE); GRE International; and Genie Energy Services. It resells electricit...

Founded: 2004
Full Time Employees: 286
Sector: Utilities
Industry: Utilities-Regulated Electric

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Quarterly
Annual
    Unit: USD2025-12-31 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 2011-10-31 
                                                             
      revenues:
                                                             
      electricity
    92,259,000 126,575,000 89,885,000 104,063,000 82,124,000 100,694,000 78,301,000 89,396,000 82,091,000 114,002,000 80,199,000 74,487,000  73,764,000 60,832,000 71,784,000 212,521,000 103,799,000 83,314,000 103,671,000 219,785,000 91,793,000 65,906,000 69,972,000  81,473,000 52,055,000 62,614,000 46,742,000 67,292,000 48,514,000 65,335,000 58,535,000 66,189,000 44,972,000 52,474,000 40,973,000 55,057,000 37,728,000 44,385,000 36,809,000 49,387,000 33,804,000 47,336,000 35,164,000 43,357,000 39,956,000 96,034,000          
      natural gas
    22,355,000 5,795,000 9,107,000 28,409,000 16,234,000 5,055,000 8,414,000 22,398,000 15,098,000 4,990,000 8,975,000 26,925,000  6,153,000 10,098,000 24,504,000 31,203,000 7,609,000 11,776,000 29,072,000 39,157,000 2,724,000 5,396,000 16,070,000  3,169,000 5,194,000 18,706,000 12,068,000 3,702,000 7,362,000 23,428,000 14,053,000 2,787,000 6,791,000 16,467,000 10,118,000 1,766,000 5,781,000 13,366,000 7,317,000 2,265,000 5,011,000 26,164,000 11,870,000 2,829,000 8,854,000 34,314,000          
      other
    6,975,000 5,954,000 6,259,000 4,335,000 4,544,000 6,168,000 3,981,000 7,894,000 7,732,000 6,057,000 4,289,000 3,864,000  1,368,000 4,096,000 2,241,000 6,837,000 1,756,000 2,616,000 2,598,000 24,044,000 1,809,000 4,773,000 18,009,000  1,071,000 3,760,000 5,297,000 3,955,000 848,000 557,000 505,000 488,000 497,000 449,000 499,000 428,000 330,000 468,000 387,000 -211,000 586,000 712,000 929,000              
      total revenues
    121,589,000 138,324,000 105,251,000 136,807,000 102,902,000 111,917,000 90,696,000 119,688,000 104,921,000 125,049,000 93,463,000 105,276,000  81,285,000 75,026,000 98,529,000 250,561,000 113,164,000 97,706,000 135,341,000 282,986,000 96,326,000 76,075,000 104,051,000  85,713,000 61,009,000 86,617,000 62,765,000 71,842,000 56,433,000 89,268,000 73,076,000 69,473,000 52,212,000 69,440,000 51,519,000 57,153,000 43,977,000 58,138,000 43,915,000 52,238,000 39,527,000 74,429,000 49,686,000 46,186,000 48,810,000 130,348,000          
      yoy
    18.16% 23.60% 16.05% 14.30% -1.92% -10.50% -2.96% 13.69%  53.84% 24.57% 6.85%  -28.17% -23.21% -27.20% -11.46% 17.48% 28.43% 30.07%  12.38% 24.69% 20.13%  19.31% 8.11% -2.97% -14.11% 3.41% 8.08% 28.55% 41.84% 21.56% 18.73% 19.44% 17.32% 9.41% 11.26% -21.89% -11.61% 13.10% -19.02% -42.90%              
      qoq
    -12.10% 31.42% -23.07% 32.95% -8.06% 23.40% -24.22% 14.07% -16.10% 33.80% -11.22%   8.34% -23.85% -60.68% 121.41% 15.82% -27.81% -52.17% 193.78% 26.62% -26.89%   40.49% -29.56% 38.00% -12.63% 27.30% -36.78% 22.16% 5.19% 33.06% -24.81% 34.79% -9.86% 29.96% -24.36% 32.39% -15.93% 32.16% -46.89% 49.80% 7.58% -5.38% -62.55%           
      cost of revenues
    87,766,000 108,305,000 81,771,000 99,444,000 69,448,000 74,010,000 57,360,000 85,902,000 71,291,000 83,967,000 55,255,000 71,990,000  38,142,000 7,552,000 52,987,000 188,076,000 70,788,000 73,940,000 117,812,000 212,617,000 69,010,000 56,588,000 75,146,000  59,360,000 52,031,000 61,026,000 48,019,000 50,572,000 40,361,000 64,810,000 311,064,000 -47,694,000 38,859,000 45,819,000 233,395,000 -36,946,000 -25,171,000 33,274,000                  
      gross profit
    33,823,000 30,019,000 23,480,000 37,363,000 33,454,000 37,907,000 33,336,000 33,786,000 33,630,000 41,082,000 38,208,000 33,286,000  43,143,000 67,474,000 45,542,000 62,485,000 42,376,000 23,766,000 17,529,000 70,369,000 27,316,000 19,487,000 28,905,000  26,353,000 8,978,000 25,591,000 14,746,000 21,270,000 16,072,000 24,458,000 26,754,000 21,779,000 13,353,000 23,621,000 14,570,000 20,207,000 18,806,000 24,864,000 16,101,000 21,818,000 13,976,000 17,200,000 12,762,000 17,827,000 11,451,000 9,896,000 16,834,000 19,939,000 9,966,000 19,019,000 18,467,000 21,440,000 11,648,000 18,032,000 16,786,000 
      yoy
    1.10% -20.81% -29.57% 10.59% -0.52% -7.73% -12.75% 1.50%  -4.78% -43.37% -26.91%  1.81% 183.91% 159.81% -11.20% 55.13% 21.96% -39.36%  3.65% 117.05% 12.95%  23.90% -44.14% 4.63% -44.88% -2.34% 20.36% 3.54% 83.62% 7.78% -29.00% -5.00% -9.51% -7.38% 34.56% 44.56% 26.16% 22.39% 22.05% 73.81% -24.19% -10.59% 14.90% -47.97% -8.84% -7.00% -14.44% 5.47% 10.01%     
      qoq
    12.67% 27.85% -37.16% 11.68% -11.75% 13.71% -1.33% 0.46% -18.14% 7.52% 14.79%   -36.06% 48.16% -27.12% 47.45% 78.31% 35.58% -75.09% 157.61% 40.18% -32.58%   193.53% -64.92% 73.55% -30.67% 32.34% -34.29% -8.58% 22.84% 63.10% -43.47% 62.12% -27.90% 7.45% -24.36% 54.43% -26.20% 56.11% -18.74% 34.78% -28.41% 55.68% 15.71% -41.21% -15.57% 100.07% -47.60% 2.99% -13.87% 84.07% -35.40% 7.42%  
      gross margin %
    27.82% 21.70% 22.31% 27.31% 32.51% 33.87% 36.76% 28.23% 32.05% 32.85% 40.88% 31.62% NaN% 53.08% 89.93% 46.22% 24.94% 37.45% 24.32% 12.95% 24.87% 28.36% 25.62% 27.78% NaN% 30.75% 14.72% 29.55% 23.49% 29.61% 28.48% 27.40% 36.61% 31.35% 25.57% 34.02% 28.28% 35.36% 42.76% 42.77% 36.66% 41.77% 35.36% 23.11% 25.69% 38.60% 23.46% 7.59% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% Infinity% 
      operating expenses:
                                                             
      selling, general and administrative
    27,642,000 22,615,000 21,177,000 23,887,000 23,320,000 25,160,000 22,015,000 22,901,000 22,729,000 23,196,000 23,173,000 22,011,000  19,605,000 18,998,000 21,109,000 42,917,000 28,853,000 22,410,000 24,104,000 58,120,000 18,831,000 15,956,000 19,499,000  19,364,000 18,195,000 15,708,000 15,204,000 13,912,000 15,369,000 17,098,000 17,114,000 19,464,000 24,742,000 18,802,000 14,681,000 14,945,000 15,934,000 16,008,000 17,024,000 15,909,000 16,469,000 16,639,000 14,767,000 18,890,000 13,426,000 14,289,000 12,177,000 12,666,000 12,137,000 12,769,000 13,428,000 15,199,000 12,965,000 12,407,000 10,092,000 
      provision for captive insurance liability
    342,500 465,000 265,000 645,000 30,945,000 991,000 640,000 1,036,000                                                  
      impairment of assets
    1,602,000 5,000 35,000  -14,000 80,000 118,000          1,662,500 6,650,000     801,000                                   
      income from operations
    5,949,000 6,934,000 2,003,000 12,831,000 -20,797,000 11,676,000 10,563,000 9,849,000 -34,187,000 17,886,000 15,035,000 11,275,000  23,538,000 48,476,000 24,433,000 26,218,000 6,873,000 1,356,000 -6,575,000 10,852,000 8,485,000 2,730,000 9,214,000  6,945,000 -9,276,000 9,834,000 1,624,000 6,046,000 -2,321,000 6,627,000 428,000 1,403,000 -12,341,000 3,968,000 -1,345,000 -37,102,000 2,625,000 6,816,000 -3,674,000 3,839,000 -4,332,000 -1,715,000   -4,344,000 -6,493,000 -385,000 3,948,000 -5,569,000 2,633,000 1,892,000 3,469,000 -5,006,000 2,693,000 3,978,000 
      yoy
    -128.61% -40.61% -81.04% 30.28% -39.17% -34.72% -29.74% -12.65%  -24.01% -68.98% -53.85%  242.47% 3474.93% -471.60% 141.60% -19.00% -50.33% -171.36%  22.17% -129.43% -6.30%  14.87% 299.66% 48.39% 279.44% 330.93% -81.19% 67.01% -131.82% -103.78% -570.13% -41.78% -63.39% -1066.45% -160.60% -497.43%   -0.28% -73.59%   -22.00% -346.60% -120.35% 13.81% 11.25% -2.23% -52.44%     
      qoq
    -14.21% 246.18% -84.39% -161.70% -278.12% 10.54% 7.25% -128.81% -291.14% 18.96% 33.35%   -51.44% 98.40% -6.81% 281.46% 406.86% -120.62% -160.59% 27.90% 210.81% -70.37%   -174.87% -194.33% 505.54% -73.14% -360.49% -135.02% 1448.36% -69.49% -111.37% -411.01% -395.02% -96.37% -1513.41% -61.49% -285.52% -195.70% -188.62% 152.59%    -33.10% 1586.49% -109.75% -170.89% -311.51% 39.16% -45.46% -169.30% -285.89% -32.30%  
      operating margin %
    4.89% 5.01% 1.90% 9.38% -20.21% 10.43% 11.65% 8.23% -32.58% 14.30% 16.09% 10.71% NaN% 28.96% 64.61% 24.80% 10.46% 6.07% 1.39% -4.86% 3.83% 8.81% 3.59% 8.86% NaN% 8.10% -15.20% 11.35% 2.59% 8.42% -4.11% 7.42% 0.59% 2.02% -23.64% 5.71% -2.61% -64.92% 5.97% 11.72% -8.37% 7.35% -10.96% -2.30% 0% 0% -8.90% -4.98% -Infinity% Infinity% -Infinity% Infinity% Infinity% Infinity% -Infinity% Infinity% Infinity% 
      interest income
    1,889,000 1,847,000 1,998,000 1,981,000 2,023,000 2,346,000 1,362,000 1,340,000 1,763,000 1,331,000 1,008,000 974,000  194,000 48,000 17,000 26,000 8,000 10,000 84,000 169,000 21,000 20,000 128,000  163,000 189,000 93,000 173,000 195,000 108,000 81,000 88,000 51,000 70,000 86,000 75,000 70,000 104,000 82,000 105,000 105,000 102,000 99,000 159,000 117,000 99,000 93,000 98,000 59,000 127,000 166,000      
      interest expense
    -168,000 -157,000 -156,000             -50,000 -328,000 -99,000 -103,000 -182,000 -280,000 -48,000 -58,000   -161,000 -178,000 -140,000 -140,000 -89,000 -81,000 -92,000                          
      gain on marketable equity securities and other investments
    267,750 398,000 505,000 168,000                                                      
      other income
    -68,500 182,000 -451,000  222,000 56,000 1,262,000 80,000 -493,000   3,246,000  156,000  -498,000 724,000 -17,000 -14,000 297,000 348,000 291,000  150,000  -85,000 157,000 73,000 33,000 25,000 58,000 42,000 253,000 -58,000   36,000 333,000  -135,000 -83,000 24,000  11,000 268,000 150,000  17,000       -75,000 -14,000 -833,000 
      income before income taxes
    8,252,000 9,204,000 3,899,000 14,785,000 -18,629,000 14,178,000 12,966,000 11,354,000 -32,848,000 19,520,000 16,031,000 15,405,000  23,912,000 47,954,000 23,250,000 31,156,000 1,505,000 8,443,000 -2,159,000 15,265,000 8,603,000 1,467,000 8,990,000  6,624,000 -10,179,000 9,063,000 -1,740,000 6,341,000 -2,236,000 6,658,000 459,000 1,396,000 -12,545,000 3,767,000 -1,234,000 -36,699,000 2,702,000 6,763,000 -4,221,000 3,378,000 -4,930,000 -2,339,000   -4,873,000 -7,328,000 -1,080,000 3,119,000 -6,249,000 1,625,000 1,157,000 2,890,000 -5,647,000 1,994,000 2,609,000 
      provision for income taxes
    -334,000 -2,469,000 -1,079,000             -6,514,000 -4,967,000 -3,822,000 -3,158,000  -601,500 -2,406,000    -1,916,000  -2,903,000 -433,250 -675,000  -799,000 -1,273,000 -421,000  -733,000 -53,000 -475,000  -1,096,000 114,000 -752,000   325,000 -467,000   -38,000 -1,077,000  -1,722,000 -97,000 -3,974,000  -791,000 -1,594,000 
      net income from continuing operations
    7,918,000 6,735,000 2,820,000 10,405,000 -12,987,000 10,254,000 9,501,000 8,434,000 -24,136,000 14,502,000 12,166,000 11,337,000  17,430,000 37,373,000 16,736,000                                          
      loss from discontinued operations, net of taxes
    -15,500 -5,000                                                        
      net income
    3,816,000 6,730,000 2,867,000 10,301,000 -15,459,000 10,229,000 9,356,000 8,169,000 -23,650,000 14,198,000 15,339,000 14,392,000  15,971,000 37,373,000 16,736,000 30,159,000 -2,317,000 5,285,000 -2,694,000 9,357,000 6,197,000 880,000 6,421,000  4,708,000 -8,501,000 6,160,000 12,369,000 5,666,000 -2,494,000 5,859,000 -814,000 975,000 -11,845,000 3,034,000 -1,287,000 -37,174,000 2,108,000 5,667,000 -4,107,000 2,626,000 -4,726,000 -2,430,000 -10,429,000 -4,825,000 -5,007,000 -7,147,000 -1,118,000 2,042,000 -6,168,000 -97,000 1,060,000 -1,084,000 -3,714,000 1,203,000 1,015,000 
      yoy
    -124.68% -34.21% -69.36% 26.10% -34.63% -27.95% -39.01% -43.24%  -11.10% -58.96% -14.01%  -789.30% 607.15% -721.23% 222.31% -137.39% 500.57% -141.96%  31.63% -110.35% 4.24%  -16.91% 240.86% 5.14% -1619.53% 481.13% -78.94% 93.11% -36.75% -102.62% -661.91% -46.46% -68.66% -1515.61% -144.60% -333.21% -60.62% -154.42% -5.61% -66.00% 832.83% -336.29% -18.82% 7268.04% -205.47% -288.38% 66.07% -108.06% 4.43%     
      qoq
    -43.30% 134.74% -72.17% -166.63% -251.13% 9.33% 14.53% -134.54% -266.57% -7.44% 6.58%   -57.27% 123.31% -44.51% -1401.64% -143.84% -296.18% -128.79% 50.99% 604.20% -86.29%   -155.38% -238.00% -50.20% 118.30% -327.19% -142.57% -819.78% -183.49% -108.23% -490.41% -335.74% -96.54% -1863.47% -62.80% -237.98% -256.40% -155.56% 94.49% -76.70% 116.15% -3.63% -29.94% 539.27% -154.75% -133.11% 6258.76% -109.15% -197.79% -70.81% -408.73% 18.52%  
      net income margin %
    3.14% 4.87% 2.72% 7.53% -15.02% 9.14% 10.32% 6.83% -22.54% 11.35% 16.41% 13.67% NaN% 19.65% 49.81% 16.99% 12.04% -2.05% 5.41% -1.99% 3.31% 6.43% 1.16% 6.17% NaN% 5.49% -13.93% 7.11% 19.71% 7.89% -4.42% 6.56% -1.11% 1.40% -22.69% 4.37% -2.50% -65.04% 4.79% 9.75% -9.35% 5.03% -11.96% -3.26% -20.99% -10.45% -10.26% -5.48% -Infinity% Infinity% -Infinity% -Infinity% Infinity% -Infinity% -Infinity% Infinity% Infinity% 
      net income attributable to noncontrolling interests
    -74,250 -13,000 45,000   30,000  46,000   183,000    2,894,000     -708,000    589,000                         -299,250 -51,000  -1,413,000      
      net income attributable to genie energy ltd. common stockholders
    3,810,000 6,743,000 2,822,000 10,630,000 -15,345,000 10,199,000 9,612,000 8,123,000 -24,508,000 14,459,000 14,980,000 14,274,000  18,314,000 33,855,000 17,519,000 30,192,000 -2,656,000 4,997,000 -2,356,000 5,316,000 6,358,000 1,593,000 5,462,000  4,877,000 -7,836,000 5,699,000 12,262,000 5,547,000 -2,289,000          -1,193,250 2,475,000                
      continuing operations
    5,064,500 6,748,000 2,775,000 10,734,000 7,092,000 10,224,000 9,757,000 8,388,000 9,447,250 14,763,000 11,807,000 11,218,000                                              
      discontinued operations
    -15,500 -5,000 47,000      1,481,000  3,173,000 3,056,000                                              
      earnings per share attributable to genie energy ltd. common stockholders:
                                                             
      basic:
                                                             
      earnings per share attributable to genie energy ltd. common stockholders
    0.193 0.26 0.11     0.3 0.428 0.54 0.58 0.56                                              
      diluted
                                                             
      weighted-average number of shares used in calculation of earnings per share:
                                                             
      basic
    26,277 26,149 26,173  26,763   26,790 25,553 26,615 25,708 25,326 25,629 25,233 25,463 25,764 25,879 25,514 25,804 26,004 26,109 25,928 26,087 26,108 26,607 26,683 26,595 26,532 25,154 25,805 24,584 24,239  23,567 23,467 23,450  22,813 22,795 22,791  22,146    21,224   19,668 19,384  19,541 20,687 21,037 21,037 21,000 20,365 
      diluted
    26,535 26,389 26,516  27,163   27,298 26,062 27,362 26,321 26,620 26,366 26,205 26,070 26,128 26,316 25,514 26,227 26,004 26,813 26,769 26,853 26,749 27,464 27,669 26,595 27,240 25,695 26,442 24,584 24,295  24,158 23,467 23,761  22,813 23,603 23,684  23,622    21,224   19,668 21,089  19,541 20,687 21,037 21,037 22,960 22,342 
      dividends declared per common share
    0.075 0.075 0.075     0.075 0.075 0.075 0.075 0.075  0.075 0.075 0.075     0.245 0.085 0.085 0.075  0.075 0.075 0.075 0.075 0.075 0.075 0.075 0.056 0.075 0.075 0.075 0.045 0.06 0.06 0.06 0.03  0.06 0.06         0.033 0.05 0.05 0.033  
      (i) stock-based compensation included in selling, general and administrative expenses
    484.5 593 606     749 529 649 756 899  713 730 840 2,399 531 559 589 687 447 401 483  335 323 448 837 1,082 1,257  1,417 1,411 1,141  1,316 1,161 1,127  1,155 1,241 1,595  2,266 4,929 1,724  1,025 1,064 1,134  815 973 958   
      income from discontinued operations, net of taxes
      47,000      1,480,750  3,173,000 3,055,000                                              
      gain on marketable equity securities and investments
        87,250 122,000 110,000 117,000   122,000                                               
      net income attributable to genie energy ltd.
        -15,345,000 10,199,000 9,612,000 8,123,000 -24,508,000 14,459,000 15,156,000 14,431,000  18,768,000 34,479,000 17,889,000 31,500,000 -2,286,000 5,367,000 -1,986,000 6,427,000 6,728,000 1,963,000 5,832,000  5,247,000 -7,466,000 6,069,000 12,632,000 5,917,000 -1,919,000 6,154,000 -1,802,000 778,000 -11,464,000 3,477,000 -5,926,750 -32,139,000 3,452,000 6,486,000 -915,500 2,845,000   -4,012,250 -4,395,000   -483,000 1,991,000  -1,510,000 2,008,000 -2,641,000 -3,252,000 604,000 1,911,000 
      dividends on preferred stock
                   -370,000 -1,308,000 -370,000 -370,000 -370,000 -1,111,000 -370,000 -370,000   -370,000 -370,000 -370,000 -370,000 -370,000 -370,000 -370,000 -370,000 -370,000 -370,000 -370,000 -370,000 -370,000 -370,000 -370,000 -370,000 -370,000 -370,000 -370,000 -370,000 -370,000 -306,000 -306,000 -306,000 -306,000 -306,000 -306,000      
      unrealized gain on marketable equity securities and investments
            96,250 334,000    57,000  -652,000 342,000 -5,312,000 2,915,000 4,107,000                                      
      net loss attributable to noncontrolling interests
                   -1,153,000 1,403,000 -31,000 -82,000  132,750 531,000 -1,083,000      280,500 251,000 575,000 295,000 1,028,000 -197,000 381,000 443,000 469,000 5,035,000 1,344,000 819,000 312,000 219,000 228,000 420,000 -8,000 430,000 136,000 363,000   267,000  948,000 -1,557,000 462,000 -599,000 896,000 
      amounts attributable to genie energy ltd. common stockholders
                                                             
      loss on marketable equity securities and investments
                                                             
      operating expenses and losses:
                                                             
      gain on sale of subsidiary
                      4,226,000                                       
      income from continuing operations
                 22,259,000 33,855,000 17,519,000                                          
      income from discontinued operations
                                                             
      basic:
                                                             
      diluted
                                                             
      loss from discontinued operations
                                                             
      basic:
                                                             
      diluted
                                                             
      net income (loss) attributable to genie energy ltd. common stockholders
                   0.67                                          
      equity in the net income in equity method investees
                    13,000 52,000 53,000 110,000       -1,071,000                               
      earnings per share attributable to genie energy ltd. common stockholders:
                                                             
      basic
                    -0.025 -0.1 0.19 -0.09 0.2 0.25 0.06 0.21  0.18 -0.29 0.21 0.49 0.21 -0.09 0.24 -0.088 0.02 -0.5 0.13 -0.273 -1.43 0.14 0.27 -0.055 0.11       -0.03 0.09  -0.09 0.08 -0.13 -0.15 0.03 0.09 
      diluted
                    -0.025 -0.1 0.19 -0.09 0.2 0.24 0.06 0.2  0.18 -0.29 0.21 0.47 0.21 -0.09 0.24 -0.088 0.02 -0.5 0.13 -0.273 -1.43 0.13 0.26 -0.055 0.1       -0.03 0.08  -0.09 0.08 -0.13 -0.15 0.03 0.09 
      benefit from income taxes
                       -535,000   -587,000    1,678,000    -258,000    700,000    -594,000    204,000 -91,000   -134,000 181,000   81,000    1,933,000   
      equity in the net loss in equity method investees
                        -36,500 -146,000 -1,173,000   -238,000  -797,000                              
      other (expenses) income
                          -52,000                                   
      impairment of property and equipment
                           192,000                                  
      research and development
                             44,000 59,000 49,000         -479,000  83,000 127,000 323,000 406,000 553,000 703,000 4,996,000 3,044,000 2,369,000 2,100,000 3,655,000 2,653,000 2,592,000 2,488,000 2,224,000 2,264,000 2,784,000 2,093,000 1,522,000 
      exploration
                                  17,000 227,000 2,323,000 753,000 952,000 851,000 1,649,000 1,323,000 1,426,000 1,691,000 2,193,000 1,531,000 1,286,000 1,573,000              
      gain on extinguishment of liability
                                 164,000                            
      loss attributable to noncontrolling interests
                             539,000 1,035,000                               
      (net income) loss attributable to noncontrolling interests
                               -91,000                              
      write-down of assets held for sale to fair value
                                685,500 451,000 2,291,000                           
      equity in the net loss of equity method investees
                                520,500 861,000                            
      equity in the net loss of joint venture
                                  716,000 506,000                          
      net income attributable to genie energy ltd. common stockholders.
                                   5,784,000 -2,079,750 408,000 -11,834,000 3,107,000 -6,204,500 -32,509,000 3,082,000 6,116,000     -4,273,750 -4,765,000   -1,584,250 1,685,000  -1,816,000      
      (i) stock-based compensation included in selling, general and administrative expense
                                   1,347    1,238    1,210    1,237    1,839    956    683 239 
      operating expenses, (gains) and losses:
                                                             
      gain on consolidation of amso, llc
                                          -1,262,000                   
      equity in the net loss of joint ventures
                                    406,000 159,000                        
      write-off of capitalized exploration costs
                                         41,041,000                    
      equity in the net loss of amso, llc
                                           222,000 264,000 133,000       587,000 672,000 806,000 1,129,000 923,000 508,000 905,000 839,000 1,194,000 
      other expense
                                      -274,000 -287,000   -27,000    -145,000    -45,000  -86,000 -159,000 -18,000 -168,000 -25,250 -12,000    
      direct cost of revenues
                                            254,216,000 -30,420,000 -25,551,000 57,229,000 409,264,000 -28,359,000 -37,359,000 120,452,000 376,595,000 -51,699,000 -45,168,000 66,312,000 272,808,000 -42,285,000 -31,178,000 39,473,000 29,010,000 
      financing fees
                                            -569,000 -590,000 -555,000 -734,000 -514,000 -518,000 -583,000 -945,000 -693,000 -729,000 -789,000 -1,006,000      
      net loss attributable to genie energy ltd.
                                              -4,498,000 -2,010,000   -4,871,000 -6,784,000   -5,901,000       
      net loss attributable to genie energy ltd. common stockholders
                                              -4,868,000               
      basic and diluted loss per share attributable to genie energy ltd. common stockholders
                                              -0.22 -0.11   -0.24 -0.33   -0.32       
      weighted-average number of shares used in calculation of basic and diluted loss per share
                                    23,531    22,804    22,135  22,125 22,107 21,256  21,174 21,170   19,313       
      net loss attributable to genie energy ltd. common stockholders.
                                               -2,380,000   -5,177,000 -7,090,000   -6,207,000       
      (loss) income from operations
                                                -3,735,750 -4,107,000            
      (loss) income before income taxes
                                                -4,139,500 -4,358,000            
      (loss) earnings per share attributable to genie energy ltd. common stockholders:
                                                             
      basic
                                                -0.203 -0.22            
      diluted
                                                -0.203 -0.22            
      revenues
                                                    67,071,000 71,638,000 55,134,000 85,331,000 65,403,000 63,725,000 42,826,000 57,505,000 45,796,000 
      financing fees, net of interest income
                                                        -454,000 -567,000 -566,000   
      interest expense and financing fees
                                                           -685,000 -536,000 
    Balance Sheets:
    Quarterly
    Annual
      Unit: USD2025-12-31 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 2011-10-31 
                                                               
        assets
                                                               
        current assets:
                                                               
        cash and cash equivalents
      203,516,000 109,280,000 105,423,000 112,544,000 104,456,000 136,295,000 122,342,000 106,560,000 107,609,000 139,829,000 110,827,000 105,220,000 98,571,000 81,705,000 61,093,000 88,185,000 95,492,000 33,983,000 31,446,000 24,371,000 36,913,000 19,556,000 33,390,000 29,710,000 31,242,000 38,826,000 32,947,000 37,540,000 41,601,000 45,916,000 43,175,000 36,705,000 29,913,000 29,390,000 33,430,000 35,971,000 35,192,000 42,301,000 38,872,000 37,899,000 38,786,000 48,380,000 56,005,000 56,023,000 71,895,000 86,238,000 67,796,000 46,351,000 73,885,000 71,847,000 71,823,000 71,648,000 69,409,000 71,519,000 81,296,000 101,864,000 92,351,000 
        restricted cash—short-term
      7,936,000 26,194,000 25,267,000 27,178,000 26,608,000 7,686,000 9,178,000 9,918,000 10,442,000 3,574,000 3,831,000 3,791,000 6,007,000 5,555,000 5,658,000 6,496,000 6,657,000 6,528,000 6,121,000 6,827,000 6,271,000 29,104,000 7,876,000 6,185,000 6,792,000 5,961,000 6,072,000 6,058,000      206,000 277,000 10,449,000 10,813,000 10,315,000 10,372,000 10,795,000 10,894,000 10,534,000 11,018,000 11,620,000 10,609,000 11,000,000 10,404,000 10,994,000 14,429,000 10,469,000 10,909,000       
        marketable equity securities
      409,000 472,000 600,000 405,000 357,000 420,000 344,000 372,000 396,000 411,000 452,000 4,663,000 490,000 471,000 490,000 657,000 1,336,000 8,048,000 13,370,000 10,455,000 5,089,000                                     
        trade accounts receivable, net of allowance for credit losses of 7,876 and 8,086 at december 31, 2025 and 2024, respectively
      70,062,000                                                         
        inventory
      12,370,000 20,865,000 16,871,000 13,726,000 12,188,000 8,513,000 5,637,000 18,460,000 14,598,000 15,306,000 18,186,000 19,345,000 15,714,000 18,517,000 16,043,000 18,865,000 17,720,000  15,653,000 19,020,000 16,930,000 13,414,000 14,702,000 18,061,000 16,632,000 9,629,000 10,854,000 9,685,000 9,893,000 7,912,000 7,765,000 5,677,000 3,986,000 4,861,000 4,719,000 6,922,000 5,989,000 6,841,000 7,305,000 6,799,000 11,440,000 11,612,000 9,930,000 8,521,000 11,166,000 8,979,000 4,719,000 651,000 3,344,000 3,478,000 1,853,000 269,000 2,644,000 2,771,000 1,695,000 980,000 4,833,000 
        prepaid expenses
      10,567,000 11,136,000 10,000,000 9,503,000 9,893,000 11,408,000 11,743,000 15,049,000 16,222,000 11,891,000 8,793,000 7,855,000 6,822,000 7,806,000 6,843,000 6,638,000 4,994,000 5,767,000 5,385,000 5,707,000 4,633,000 4,181,000 4,331,000 7,674,000 6,318,000 6,588,000 8,263,000 4,874,000 6,167,000 5,984,000 6,110,000 5,619,000 6,131,000 7,249,000 6,443,000 4,577,000 4,026,000 7,488,000 9,243,000 9,146,000 11,328,000 6,908,000 8,655,000 8,361,000 5,713,000 4,170,000 3,212,000 4,436,000 3,408,000 2,663,000 1,239,000 1,566,000 3,315,000 2,689,000 1,850,000 3,110,000 3,611,000 
        other current assets
      17,154,000 9,831,000 9,840,000 9,207,000 8,493,000 6,726,000 5,576,000 6,085,000 5,475,000 4,625,000 7,059,000 5,363,000 6,207,000 8,156,000 48,392,000 17,393,000 21,789,000 15,924,000 4,956,000 5,724,000 3,206,000 4,271,000 4,753,000 13,699,000 2,133,000 3,119,000 2,844,000 2,126,000 4,323,000 3,810,000 3,769,000 1,418,000 4,985,000 3,790,000 5,812,000 6,539,000 4,932,000 4,920,000 6,149,000 6,850,000 6,104,000 5,682,000 7,855,000 7,711,000 5,430,000 3,770,000 2,630,000 3,446,000 2,917,000 1,755,000 927,000 638,000 771,000 1,103,000 944,000 963,000 1,528,000 
        other current assets of discontinued operations
      1,419,000    3,594,000    13,182,000    38,688,000                                             
        total current assets
      323,433,000 238,171,000 230,746,000 238,508,000 227,447,000 227,663,000 216,128,000 227,823,000 229,833,000 270,241,000 243,243,000 247,190,000 227,633,000 214,597,000 201,080,000 187,024,000 200,345,000 152,491,000 136,590,000 139,795,000 133,820,000 115,313,000 106,813,000 120,823,000 112,939,000 103,716,000 96,188,000 102,204,000 97,904,000 100,993,000 91,838,000 89,867,000 90,162,000 80,195,000 88,188,000 97,843,000 97,810,000 104,986,000 110,671,000 108,174,000 114,624,000 121,211,000 124,768,000 137,912,000 142,372,000 144,977,000 121,342,000 144,822,000 146,092,000 135,684,000 131,975,000 141,637,000 141,201,000 138,375,000 134,290,000 137,614,000 137,330,000 
        property and equipment
      28,303,000 30,536,000 28,622,000 26,866,000 25,246,000 22,396,000 20,234,000 16,139,000 15,192,000 6,112,000 1,422,000 964,000 891,000  347,000 350,000 297,000 281,000 269,000 226,000 259,000 357,000 435,000 443,000 3,607,000 3,821,000 4,092,000 4,371,000 4,301,000 739,000 702,000 4,053,000 4,020,000 4,194,000 4,132,000 1,723,000 1,617,000 1,471,000 1,238,000 1,351,000 1,347,000 1,601,000 1,718,000 1,778,000 1,902,000 1,748,000 1,268,000 645,000 561,000 583,000 395,000 354,000 409,000     
        goodwill
      12,978,000 12,866,000 12,801,000 12,686,000 12,749,000 12,690,000 12,658,000 9,998,000 9,998,000 9,998,000 9,998,000 9,998,000 9,998,000 9,998,000 11,617,000 11,709,000 11,755,000 25,627,000 26,041,000 25,977,000 25,929,000 12,213,000 12,137,000 12,102,000 12,135,000 12,775,000 13,054,000 13,023,000 11,082,000 9,998,000 9,998,000 9,998,000 9,998,000 9,998,000 8,728,000 8,728,000 8,728,000 3,663,000 3,663,000 3,663,000 3,663,000 3,663,000 3,663,000 3,663,000 3,663,000 7,226,000 7,226,000 7,230,000 7,349,000 3,663,000 3,663,000 3,663,000 3,663,000 3,663,000 3,663,000 3,663,000 3,663,000 
        other intangibles
      1,804,000 2,092,000 2,183,000 2,275,000 2,367,000 2,459,000 2,551,000 2,643,000 2,735,000 2,834,000 2,934,000 3,033,000 3,133,000 3,232,000 3,408,000 3,529,000 3,648,000 3,768,000 9,177,000 10,059,000 11,645,000 5,067,000 5,440,000 6,327,000 6,837,000 7,444,000 8,015,000 8,509,000 6,321,000 4,556,000 4,918,000 4,516,000 4,859,000 5,202,000 3,653,000 3,956,000 4,277,000                     
        deferred income tax assets
      2,309,000 7,055,000 7,055,000 7,045,000 7,055,000 5,197,000 5,209,000 5,200,000 5,200,000 5,799,000 5,799,000 5,799,000 5,799,000 5,203,000 4,581,000 5,204,000 4,259,000 2,005,000 1,908,000 4,652,000 4,882,000 7,316,000 9,617,000 9,801,000 12,154,000 14,034,000 14,848,000 13,184,000 15,625,000 2,028,000 2,028,000 2,028,000 2,141,000 2,324,000 2,324,000 1,781,000 1,781,000 1,642,000 1,642,000 1,642,000 1,642,000 1,548,000 1,650,000 1,463,000 1,463,000 920,000 920,000 840,000 840,000 599,000 599,000       
        other assets
      20,553,000 27,197,000 25,847,000 22,305,000 22,365,000 18,821,000 15,308,000 16,427,000 15,247,000 13,150,000 13,183,000 13,506,000 13,856,000 12,975,000 18,202,000 12,369,000 9,161,000 9,448,000 10,205,000 10,548,000 10,057,000 7,573,000 6,862,000 6,894,000 7,377,000 7,011,000 9,378,000 10,610,000 8,480,000 9,183,000 11,714,000 10,552,000 9,652,000 9,949,000 9,235,000 6,514,000 6,553,000 5,007,000 6,228,000 6,268,000 5,859,000 4,724,000 4,681,000 4,562,000 3,968,000 3,806,000 3,738,000 3,656,000 3,714,000 5,207,000 5,061,000 4,806,000 5,033,000 4,592,000 4,499,000 3,856,000 1,055,000 
        noncurrent assets of discontinued operations
       5,527,000 5,537,000 4,589,000 4,466,000 5,184,000 4,295,000 4,533,000 7,405,000 7,553,000 9,378,000 12,520,000 16,305,000 13,851,000                                            
        total assets
      389,380,000 394,122,000 383,092,000 384,378,000 371,275,000 341,681,000 322,783,000 328,304,000 330,555,000 315,687,000 285,957,000 293,010,000 277,615,000 259,856,000 239,235,000 220,185,000 229,465,000 193,620,000 185,126,000 191,257,000 187,339,000 148,892,000 142,421,000 157,176,000 156,244,000 150,230,000 147,561,000 154,236,000 146,864,000 131,463,000 124,385,000 125,178,000 125,778,000 120,210,000 121,185,000 123,165,000 121,813,000 117,968,000 165,243,000 159,313,000 155,815,000 150,229,000 147,611,000 153,608,000 152,928,000 158,831,000 134,713,000 157,465,000 158,843,000 146,176,000 142,097,000 150,460,000 150,306,000 147,201,000 144,716,000 147,378,000 144,458,000 
        liabilities and equity
                                                               
        current liabilities:
                                                               
        trade accounts payable
      41,094,000 28,082,000 34,577,000 29,752,000 31,233,000 23,679,000 26,585,000 22,407,000 27,881,000 24,857,000 23,815,000 19,894,000 25,313,000 18,783,000 26,188,000 21,460,000 33,554,000 39,760,000 36,141,000 42,016,000 43,005,000 22,889,000 21,578,000 24,243,000 24,387,000 20,012,000 19,958,000 20,044,000 18,508,000 17,286,000 16,424,000 17,752,000 21,068,000 15,341,000 15,175,000 14,330,000 17,274,000 11,942,000 15,629,000 11,681,000 12,642,000 11,346,000 10,556,000 15,026,000 14,881,000 13,618,000 14,298,000 30,878,000 25,302,000 17,565,000 18,093,000 21,154,000 20,641,000 14,157,000 14,100,000 12,605,000 11,802,000 
        accrued expenses
      50,782,000 59,682,000 49,193,000 52,497,000 48,793,000 44,211,000 36,288,000 53,821,000 49,389,000 45,444,000 33,878,000 38,568,000 35,659,000 41,803,000 33,771,000 42,272,000 39,523,000 51,339,000 49,104,000 50,654,000 42,762,000 31,326,000 28,652,000 28,936,000 26,116,000 25,813,000 26,024,000 24,402,000 25,242,000 27,597,000 25,254,000 26,115,000 28,069,000 27,322,000 26,555,000 15,993,000 16,301,000 17,194,000 18,373,000 19,021,000 19,424,000 16,850,000 15,958,000 14,259,000 10,913,000 9,944,000 9,017,000 11,641,000 9,856,000 7,719,000 7,335,000 7,377,000 7,832,000 12,655,000 10,568,000 8,757,000 6,175,000 
        income taxes payable
      28,851,000 10,259,000 7,819,000 13,596,000 9,196,000 12,988,000 9,062,000 9,614,000 6,699,000 16,010,000 10,996,000 27,580,000 22,576,000 17,521,000 10,903,000 16,352,000 9,792,000 6,435,000 2,518,000 2,103,000 1,893,000 1,548,000 2,206,000 1,796,000 1,591,000 2,026,000 952,000 1,923,000 1,463,000 1,976,000 1,300,000 2,958,000 2,204,000 1,105,000 685,000 3,176,000 2,426,000 2,367,000 1,913,000 1,623,000 923,000 1,206,000 557,000 602,000 543,000 278,000 245,000  2,075,000 1,936,000 1,997,000 2,082,000 1,244,000 916,000 2,214,000 3,215,000 2,971,000 
        current debt
      2,139,000 2,134,000 2,167,000 2,167,000                                                      
        due to idt corporation
      112,000 317,000 127,000 136,000 135,000 116,000 150,000 120,000 145,000 120,000 144,000 98,000 165,000 135,000 148,000 141,000 532,000 109,000 304,000 188,000 257,000 115,000 95,000 137,000 381,000 153,000 206,000 138,000 234,000 90,000 154,000 135,000 228,000 193,000 201,000 78,000 141,000 61,000 111,000 185,000 438,000 80,000 166,000 136,000 542,000 831,000 255,000 232,000 541,000 521,000 300,000 446,000 600,000 574,000 454,000 614,000  
        other current liabilities
      10,052,000 11,310,000 8,801,000 6,227,000 6,750,000 6,194,000 6,505,000 6,107,000 9,280,000 8,624,000 7,395,000 7,580,000 4,549,000 2,150,000 4,311,000 1,848,000 2,125,000 2,132,000 2,011,000 5,662,000 2,494,000 2,109,000 2,961,000 6,281,000 2,704,000 8,208,000 5,401,000 3,082,000 4,416,000 1,880,000 3,696,000 2,626,000 3,172,000 3,256,000 5,969,000 3,064,000 1,784,000 1,287,000 772,000 665,000 878,000 661,000 1,987,000 816,000 797,000 2,010,000 1,269,000 1,582,000 1,457,000 827,000 252,000 276,000 209,000 71,000 54,000 96,000 463,000 
        current liabilities of discontinued operations
      2,996,000 3,743,000 3,740,000 3,706,000 4,585,000 1,637,000 4,790,000 8,516,000 4,858,000 10,736,000 10,967,000 11,076,000 10,936,000 5,731,000  8,934,000 30,766,000                                         
        total current liabilities
      136,026,000 124,919,000 115,728,000 117,317,000 109,812,000 88,825,000 83,380,000 100,585,000 98,252,000 105,791,000 87,195,000 104,796,000 99,198,000 86,123,000 75,321,000 91,007,000 116,292,000 108,092,000 95,295,000 104,381,000 97,473,000 60,442,000 57,718,000 69,729,000 72,156,000 57,113,000 53,451,000 50,507,000 50,786,000 48,829,000 46,828,000 49,586,000 54,741,000 47,217,000 48,585,000 40,718,000 41,145,000 35,644,000 40,702,000 35,124,000 37,552,000 32,640,000 33,000,000 35,951,000 32,082,000 26,908,000 25,307,000 44,577,000 40,334,000 29,642,000 28,452,000 31,798,000 32,209,000 31,024,000 27,390,000 26,045,000 21,411,000 
        noncurrent debt
      6,529,000 6,715,000 6,846,000 6,838,000 8,668,000                                                     
        other liabilities
      2,379,000 2,246,000 2,307,000 2,022,000 2,959,000 2,821,000 2,771,000 2,082,000 2,212,000 1,859,000 2,091,000 1,894,000 4,087,000 2,159,000 10,660,000 2,886,000 2,384,000 2,965,000 3,331,000 3,452,000 3,787,000 1,952,000 2,101,000 2,238,000 2,381,000 2,817,000 2,887,000 2,842,000 900,000 1,170,000 1,356,000 1,378,000 1,396,000 1,218,000 1,237,000 805,000 803,000 911,000 1,051,000 1,236,000 1,566,000 1,494,000 1,494,000 1,528,000 1,503,000 1,985,000 2,389,000 2,279,000 2,169,000 225,000 67,000       
        noncurrent liabilities of discontinued operations
       741,000 744,000 707,000 705,000 703,000 678,000 681,000 638,000 668,000 686,000 686,000 686,000 9,502,000                                            
        total liabilities
      144,934,000 205,299,000 195,926,000 196,988,000 191,724,000 141,395,000 133,229,000 148,889,000 146,047,000 108,318,000 89,972,000 107,376,000 103,971,000 97,784,000 85,981,000 93,893,000 118,676,000 111,057,000 98,626,000 107,833,000 101,260,000 62,394,000 59,819,000 71,967,000 75,314,000 62,446,000 58,853,000 55,865,000 54,202,000 52,513,000 50,698,000 53,478,000 58,650,000 50,947,000 52,328,000 41,523,000 41,948,000 36,555,000 43,753,000 38,360,000 41,118,000 34,134,000 34,494,000 37,479,000 33,585,000 28,893,000 27,696,000 46,856,000 42,503,000 29,867,000 28,519,000       
        commitments and contingencies
                                                               
        equity:
                                                               
        genie energy ltd. stockholders’ equity:
                                                               
        preferred stock, 0.01 par value...
                                                               
        series 2012-a, designated shares – 8,750; at liquidation preference, consisting of 0 shares issued and outstanding at december 31, 2025 and 2024
                                                               
        class a common stock, 0.01 par value...
      16,000 16,000 16,000 16,000 16,000 16,000 16,000 16,000 16,000 16,000 16,000 16,000 16,000 16,000 16,000 16,000 16,000 16,000 16,000 16,000 16,000 16,000 16,000 16,000 16,000 16,000 16,000 16,000 16,000                             
        class b common stock, 0.01 par value...
      293,000 293,000 293,000 293,000 293,000 293,000 289,000 289,000 288,000 288,000 288,000 271,000 271,000 270,000 267,000 266,000 266,000 266,000 261,000 261,000 260,000 258,000 258,000 258,000 258,000 259,000 258,000 257,000 255,000                             
        additional paid-in capital
      157,763,000 161,180,000 160,587,000 159,981,000 159,192,000 158,570,000 158,007,000 157,549,000 156,101,000 154,948,000 154,299,000 147,445,000 146,546,000 145,552,000 144,818,000 144,089,000 143,249,000 141,787,000 142,056,000 141,496,000 140,746,000 140,935,000 140,470,000 140,069,000 139,615,000 139,774,000 139,000,000 137,884,000 136,629,000 135,793,000 133,037,000 131,759,000 130,870,000 131,778,000 129,249,000 128,410,000 128,243,000 126,256,000 126,785,000 125,658,000 124,449,000 123,215,000 121,880,000 115,460,000 114,322,000 112,156,000 82,725,000 84,543,000 82,791,000 82,710,000 79,612,000 78,541,000 80,196,000 93,230,000 93,450,000 92,491,000 91,933,000 
        treasury stock
      -48,274,000 -46,217,000 -42,567,000 -39,835,000 -37,486,000 -34,951,000 -31,849,000 -29,285,000 -22,661,000 -22,469,000 -21,613,000 -19,175,000 -19,010,000 -18,852,000 -18,519,000 -14,105,000 -14,034,000 -13,922,000 -12,274,000 -9,839,000 -9,839,000 -9,572,000 -9,221,000 -7,763,000 -7,675,000 -5,354,000 -1,624,000 -1,624,000 -1,624,000 -1,518,000 -735,000 -2,428,000 -2,428,000 -2,428,000 -1,622,000 -1,622,000 -1,599,000 -1,599,000 -1,599,000 -1,599,000 -1,570,000 -1,565,000 -1,565,000 -1,565,000 -1,543,000 -1,430,000 -473,000 -473,000 -473,000 -473,000 -330,000 -330,000 -204,000 -133,000 -133,000 -133,000  
        accumulated other comprehensive income
      4,921,000 4,801,000 4,720,000 4,373,000 3,919,000 5,212,000 1,836,000 -1,911,000 3,299,000 1,413,000 1,965,000 1,895,000 1,926,000 -3,075,000 1,123,000 3,499,000 3,160,000 2,994,000 3,178,000 3,255,000 3,827,000 2,800,000 2,553,000 2,230,000 2,519,000 3,051,000 3,135,000 2,881,000 2,591,000 2,437,000 2,401,000 3,060,000 3,045,000 2,813,000 2,784,000 2,165,000 1,465,000 1,538,000 555,000 1,414,000 154,000 -42,000 582,000 -52,000 10,000 403,000 822,000 713,000 745,000 619,000 381,000 358,000 270,000    439,000 
        retained earnings
      136,183,000 78,734,000 73,990,000 73,178,000 64,574,000 81,959,000 73,779,000 66,198,000 60,196,000 86,759,000 74,355,000 61,333,000 49,010,000 34,782,000 18,361,000                               4,521,000 9,284,000 14,462,000 21,552,000 22,340,000 20,658,000 26,559,000 28,375,000 26,576,000 30,368,000 34,770,000 37,136,000 
        total genie energy ltd. stockholders’ equity
      250,902,000 198,807,000 197,039,000 198,006,000 190,508,000 211,099,000 202,078,000 192,856,000 197,239,000 220,955,000 209,310,000 199,144,000 187,118,000 175,436,000 163,809,000 139,978,000 123,285,000 94,211,000 98,963,000 95,918,000 98,095,000 101,489,000 96,988,000 98,369,000 94,805,000 99,868,000 100,072,000 108,599,000 103,671,000 92,540,000 86,997,000 88,836,000 84,013,000 86,709,000 86,410,000 98,635,000 96,534,000 97,286,000 132,327,000 130,455,000 123,377,000 126,117,000 122,931,000 122,221,000 125,021,000 135,641,000 112,312,000 115,762,000 121,132,000 121,712,000 116,835,000 121,642,000 122,490,000 119,828,000 123,727,000 127,255,000 129,735,000 
        noncontrolling interests:
                                                               
        noncontrolling interest
      -6,034,000    -10,174,000                                                     
        receivable from issuance of equity
      -422,000 -424,000 -531,000 -783,000 -783,000 -870,000                                                    
        total noncontrolling interests
      -6,456,000 -9,984,000 -9,873,000 -10,616,000 -10,957,000 -10,813,000                           -16,885,000 -17,446,000 -17,553,000 -16,993,000 -16,669,000 -15,873,000 -10,837,000 -9,502,000 -8,680,000 -10,022,000 -9,814,000 -6,092,000 -5,678,000 -5,703,000 -5,295,000 -5,153,000 -4,792,000 -5,403,000 -3,257,000 -2,980,000 -4,393,000 -3,651,000 -6,401,000 -5,922,000 -6,688,000 
        total equity
      244,446,000 188,823,000 187,166,000 187,390,000 179,551,000 200,286,000 189,554,000 179,415,000 184,508,000 207,369,000 195,985,000 185,634,000 173,644,000 162,072,000 153,254,000 126,292,000 110,789,000 82,563,000 86,500,000 83,424,000 86,079,000 86,498,000 82,602,000 85,209,000 80,930,000 87,784,000 88,708,000 98,371,000 92,662,000 78,950,000 73,687,000 71,700,000 67,128,000 69,263,000 68,857,000 81,642,000 79,865,000 81,413,000 121,490,000 120,953,000 114,697,000 116,095,000 113,117,000 116,129,000 119,343,000 129,938,000 107,017,000 110,609,000 116,340,000 116,309,000 113,578,000 118,662,000 118,097,000 116,177,000 117,326,000 121,333,000 123,047,000 
        total liabilities and equity
      389,380,000 394,122,000 383,092,000 384,378,000 371,275,000 341,681,000 322,783,000 328,304,000 330,555,000 315,687,000 285,957,000 293,010,000 277,615,000 259,856,000 239,235,000 220,185,000 229,465,000 193,620,000 185,126,000 191,257,000 187,339,000 148,892,000 142,421,000 157,176,000 156,244,000 150,230,000 147,561,000 154,236,000 146,864,000 131,463,000 124,385,000 125,178,000 125,778,000 120,210,000 121,185,000 123,165,000 121,813,000 117,968,000 165,243,000 159,313,000 155,815,000 150,229,000 147,611,000 153,608,000 152,928,000 158,831,000 134,713,000 157,465,000 158,843,000 146,176,000 142,097,000 150,460,000 150,306,000 147,201,000 144,716,000 147,378,000 144,458,000 
        trade accounts receivable, net of allowance for credit losses of 7,451 and 8,086 at september 30, 2025 and december 31, 2024, respectively
       58,983,000                                                        
        current assets of discontinued operations
       1,410,000 1,423,000 1,727,000  6,280,000 7,080,000 11,292,000  33,923,000 35,865,000 35,750,000  48,863,000 18,680,000                                           
        restricted cash—long-term
       70,678,000 70,301,000 70,104,000 69,580,000 47,271,000 46,400,000 45,541,000 44,945,000             570,000 493,000 493,000  521,000 854,000 865,000  997,000 984,000 1,090,000  1,491,000 1,489,000 1,475,000 1,047,000 1,199,000 1,836,000 2,246,000 1,802,000 1,415,000 1,466,000 1,385,000 1,023,000 1,074,000 1,139,000 1,112,000 1,127,000 1,039,000 1,003,000       
        current captive insurance liability
       9,392,000 9,304,000 9,236,000 9,120,000                                                     
        noncurrent captive insurance liability
       70,678,000 70,301,000 70,104,000 69,580,000 47,271,000 46,400,000 45,541,000 44,945,000                                                 
        series 2012-a, designated shares—8,750; at liquidation preference, consisting of 0 shares issued and outstanding at september 30, 2025 and december 31, 2024
                                                               
        noncontrolling interests
       -9,560,000 -9,342,000 -9,833,000  -9,943,000 -12,524,000 -13,441,000 -12,731,000 -13,586,000 -13,325,000 -13,510,000 -13,474,000 -13,364,000 -10,555,000 -13,686,000 -12,496,000 -11,648,000 -12,463,000 -12,494,000 -12,016,000 -14,991,000 -14,386,000 -13,160,000 -13,875,000 -12,084,000 -11,364,000 -10,228,000 -11,009,000 -13,590,000 -13,310,000 -17,136,000 -16,885,000 -15,779,000 -15,886,000 -15,326,000 -15,002,000 -14,206,000 -9,170,000 -7,835,000 -7,013,000 -6,522,000 -6,314,000 -5,092,000 -4,678,000 -4,703,000 -4,295,000 -4,153,000 -3,792,000 -4,403,000 -2,257,000 -1,980,000 -3,393,000 -2,651,000 -5,401,000 -4,922,000 -5,688,000 
        trade accounts receivable, net of allowance for credit losses of 8,673 and 8,086 at june 30, 2025 and december 31, 2024, respectively
        61,322,000                                                       
        series 2012-a, designated shares—8,750; at liquidation preference, consisting of 0 shares issued and outstanding at june 30, 2025 and december 31, 2024
                                                               
        trade accounts receivable, net of allowance for doubtful accounts of 8,238 and 8,086 at march 31, 2025 and december 31, 2024, respectively
         64,218,000                                                      
        series 2012-a, designated shares—8,750; at liquidation preference, consisting of 0 shares issued and outstanding at march 31, 2025 and december 31, 2024
                                                               
        trade accounts receivable, net of allowance for doubtful accounts of 8,086 and 6,574 at december 31, 2024 and 2023, respectively
          61,858,000                                                     
        series 2012-a, designated shares – 8,750; at liquidation preference, consisting of 0 shares issued and outstanding at december 31, 2024 and 2023
                                                               
        trade accounts receivable, net of allowance for doubtful accounts of 7,697 and 6,574 at september 30, 2024 and december 31, 2023, respectively
           50,335,000                                                    
        notes payable
           1,775,000                    901,000 910,000 918,000 923,000                             
        series 2012-a, designated shares—8,750; at liquidation preference, consisting of 0 shares issued and outstanding at september 30, 2024 and december 31, 2023
                                                               
        trade accounts receivable, net of allowance for doubtful accounts of 7,349 and 6,574 at june 30, 2024 and december 31, 2023, respectively
            54,228,000                                                   
        series 2012-a, designated shares—8,750; at liquidation preference, consisting of 0 shares issued and outstanding at june 30, 2024 and december 31, 2023
                                                               
        trade accounts receivable, net of allowance for doubtful accounts of 7,020 and 6,574 at march 31, 2024 and december 31, 2023, respectively
             60,087,000                                                  
        series 2012-a, designated shares—8,750; at liquidation preference, consisting of 0 shares issued and outstanding at march 31, 2024 and december 31, 2023
                                                               
        trade accounts receivable, net of allowance for doubtful accounts of 6,574 and 4,826 at december 31, 2023 and 2022, respectively
              61,909,000                                                 
        series 2012-a, designated shares – 8,750; at liquidation preference, consisting of 0 shares and 983 issued and outstanding at december 31, 2023 and 2022
                                                               
        trade accounts receivable, net of allowance for doubtful accounts of 6,365 and 4,826 at september 30, 2023 and december 31, 2022, respectively
               60,682,000                                                
        series 2012-a, preferred stock (liquidation preference, 8.50 per share), designated shares—8,750; 0 and 983 shares issued and outstanding at september 30, 2023 and december 31, 2022
                                                               
        trade accounts receivable, net of allowance for doubtful accounts of 6,098 and 4,826 at june 30, 2023 and december 31, 2022, respectively
                58,230,000                                               
        series 2012-a, designated shares—8,750; at liquidation preference, consisting of — and 983 shares issued and outstanding at june 30, 2023 and december 31, 2022
                                                               
        trade accounts receivable, net of allowance for doubtful accounts of 5,383 and 4,826 at march 31, 2023 and december 31, 2022, respectively
                 65,203,000                                              
        series 2012-a, designated shares—8,750; at liquidation preference, consisting of 866 and 983 shares issued and outstanding at march 31, 2023 and december 31, 2022
                 7,359,000                                              
        trade accounts receivable, net of allowance for doubtful accounts of 4,826 and 6,139 at december 31, 2022 and 2021, respectively
                  55,134,000                                             
        series 2012-a, designated shares – 8,750; at liquidation preference, consisting of 983 shares issued and outstanding at december 31, 2022 and 2021
                  8,359,000                                             
        trade accounts receivable, net of allowance for doubtful accounts of 4,448 and 6,139 at september 30, 2022 and december 31, 2021, respectively
                   43,524,000                                            
        series 2012-a, designated shares—8,750; at liquidation preference, consisting of 1,970 and 2,322 shares issued and outstanding at september 30, 2022 and december 31, 2021
                   16,743,000                                            
        trade accounts receivable, net of allowance for doubtful accounts of 4,480 and 6,365 at june 30, 2022 and december 31, 2021, respectively
                    43,881,000                                           
        series 2012-a, designated shares—8,750; at liquidation preference, consisting of 2,087 and 2,322 shares issued and outstanding at june 30, 2022 and december 31, 2021
                    17,743,000                                           
        trade accounts receivable, net of allowance for doubtful accounts of 6,781 and 6,365 at march 31, 2022 and december 31, 2021, respectively
                     48,790,000                                          
        series 2012-a, designated shares—8,750; at liquidation preference, consisting of 2,322 shares issued and outstanding at march 31, 2022 and december 31, 2021
                     19,743,000                                          
        accumulated deficit
                     -13,530,000 -29,115,000 -56,673,000 -54,017,000 -59,014,000 -56,658,000 -52,691,000 -56,831,000 -56,184,000 -59,671,000 -57,621,000 -60,456,000 -50,558,000 -53,939,000 -64,186,000 -67,715,000 -63,550,000 -67,469,000 -65,449,000 -63,993,000 -50,310,000 -51,567,000 -48,901,000 -13,406,000 -15,010,000 -19,647,000 -15,482,000 -17,957,000 -11,613,000              
        trade accounts receivable, net of allowance for doubtful accounts of 6,365 and 4,819 at december 31, 2021 and 2020, respectively
                      52,357,000                                         
        loans payable
                          1,453,000    921,000                                 
        series 2012-a, designated shares – 8,750; at liquidation preference, consisting of 2,322 shares issued and outstanding at december 31, 2021 and 2020
                      19,743,000                                         
        trade accounts receivable, net of allowance for doubtful accounts of 16,465 and 8,793 at september 30, 2021 and december 31, 2020, respectively
                       58,593,000                                        
        inventories
                       23,648,000                                        
        loan payable
                           1,422,000 1,392,000 925,000                                  
        contract liability
                       8,317,000 5,217,000 3,758,000 5,609,000 1,033,000 834,000 3,893,000 13,426,000                                 
        series 2012-a, designated shares—8,750; at liquidation preference, consisting of 2,322 shares issued and outstanding at september 30, 2021 and december 31, 2020
                       19,743,000                                        
        trade accounts receivable, net of allowance for doubtful accounts of 11,268 and 8,793 at june 30, 2021 and december 31, 2020, respectively
                        59,659,000                                       
        investment in joint venture
                        936,000            2,203,000 3,074,000 3,450,000 1,116,000                        
        series 2012-a, designated shares—8,750; at liquidation preference, consisting of 2,322 shares issued and outstanding at june 30, 2021 and december 31, 2020
                        19,743,000                                       
        trade accounts receivable, net of allowance for doubtful accounts of 9,891 and 8,793 at march 31, 2021 and december 31, 2020, respectively
                         67,691,000                                      
        series 2012-a, designated shares—8,750; at liquidation preference, consisting of 2,322 shares issued and outstanding at march 31, 2021 and december 31, 2020
                         19,743,000                                      
        trade accounts receivable, net of allowance for doubtful accounts of 8,793 and 2,631 at december 31, 2020 and 2019, respectively
                          60,778,000                                     
        investment in equity method investees
                          747,000 483,000 624,000 293,000 675,000 908,000 1,132,000 1,470,000 2,208,000 2,969,000                            
        short-term revolving line of credit
                             3,518,000 2,514,000                                 
        long-term notes payable
                              777,000                                 
        series 2012-a, designated shares – 8,750; at liquidation preference, consisting of 2,322 shares issued and outstanding at december 31, 2020 and 2019
                          19,743,000                                     
        trade accounts receivable, net of allowance for doubtful accounts of 4,285 and 2,631 at september 30, 2020 and december 31, 2019, respectively
                           44,787,000                                    
        series 2012-a, designated shares—8,750; at liquidation preference, consisting of 2,322 shares issued and outstanding at september 30, 2020 and december 31, 2019
                           19,743,000                                    
        trade accounts receivable, net of allowance for doubtful accounts of 3,552 and 2,631 at june 30, 2020 and december 31, 2019, respectively
                            41,761,000                                   
        series 2012-a, designated shares—8,750; at liquidation preference, consisting of 2,322 shares issued and outstanding at june 30, 2020 and december 31, 2019
                            19,743,000                                   
        trade accounts receivable, net of allowance for doubtful accounts of 3,134 and 2,631 at march 31, 2020 and december 31, 2019, respectively
                             45,494,000                                  
        series 2012-a, designated shares—8,750; at liquidation preference, consisting of 2,322 shares issued and outstanding at march 31, 2020 and december 31, 2019
                             19,743,000                                  
        trade accounts receivable, net of allowance for doubtful accounts of 2,631 and 2,003 at december 31, 2019 and 2018, respectively
                              49,822,000                                 
        restricted cash – long-term
                              520,000    943,000    1,496,000                         
        current portion of notes payable
                              116,000                                 
        long-term revolving line of credit
                                                               
        series 2012-a, designated shares – 8,750; at liquidation preference, consisting of 2,322 shares issued and outstanding at december 31, 2019 and 2018
                              19,743,000                                 
        trade accounts receivable, net of allowance for doubtful accounts of 2,461 and 2,003 at september 30, 2019 and december 31, 2018, respectively
                               39,593,000                                
        revolving line of credit
                               2,516,000 2,515,000 2,516,000 2,516,000 2,514,000 2,514,000 2,514,000    1,160,000 711,000                     
        series 2012-a, designated shares—8,750; at liquidation preference, consisting of 2,322 shares issued and outstanding at september 30, 2019 and december 31, 2018
                               19,743,000                                
        trade accounts receivable, net of allowance for doubtful accounts of 2,410 and 2,003 at june 30, 2019 and december 31, 2018, respectively
                                35,208,000                               
        series 2012-a, designated shares—8,750; at liquidation preference, consisting of 2,322 shares issued and outstanding at june 30, 2019 and december 31, 2018
                                19,743,000                               
        trade accounts receivable, net of allowance for doubtful accounts of 2,139 and 2,003 at march 31, 2019 and december 31, 2018, respectively
                                 41,921,000                              
        series 2012-a, designated shares—8,750; at liquidation preference, consisting of 2,322 shares issued and outstanding at march 31, 2019 and december 31, 2018
                                 19,743,000                              
        trade accounts receivable, net of allowance for doubtful accounts of 2,003 and 1,099 at december 31, 2018 and 2017, respectively
                                  35,920,000                             
        series 2012-a, designated shares – 8,750; at liquidation preference, consisting of 2,322 shares issued and outstanding at december 31, 2018 and 2017
                                  19,743,000                             
        trade accounts receivable, net of allowance for doubtful accounts of 1,709 and 1,099 at september 30, 2018 and december 31, 2017, respectively
                                   37,371,000                            
        preferred stock, .01 par value...
                                    19,743,000           19,743,000    19,743,000            
        series 2012-a, designated shares—8,750; at liquidation preference, consisting of 2,322 shares issued and outstanding at september 30, 2018 and december 31, 2017
                                   19,743,000                            
        class a common stock, .01 par value...
                                   16,000 16,000 16,000 16,000 16,000 16,000 16,000 16,000 16,000 16,000 16,000 16,000 16,000 16,000 16,000 16,000 16,000 16,000 16,000 16,000 16,000 16,000 16,000 16,000 16,000 16,000 16,000 16,000 
        class b common stock, .01 par value...
                                   255,000 250,000 236,000 236,000 236,000 233,000 233,000 233,000 233,000 233,000 233,000 232,000 232,000 232,000 232,000 232,000 232,000 195,000 198,000 198,000 197,000 195,000 195,000 198,000 214,000 214,000 214,000 211,000 
        trade accounts receivable, net of allowance for doubtful accounts of 1,601 and 1,099 at june 30, 2018 and december 31, 2017, respectively
                                    31,019,000                           
        trade accounts receivable, net of allowance for doubtful accounts of 1,394 and 1,099 at march 31, 2018 and december 31, 2017, respectively
                                     40,448,000                          
        series 2012-a, designated shares—8,750; at liquidation preference, consisting of 2,322 shares issued and outstanding at march 31, 2018 and december 31, 2017
                                     19,743,000                          
        restricted cash – short-term
                                      518,000                         
        trade accounts receivable, net of allowance for doubtful accounts of 1,099 and 171 at december 31, 2017 and 2016, respectively
                                      44,629,000                         
        series 2012-a, designated shares – 8,750; at liquidation preference, consisting of 2,322 shares issued and outstanding at december 31, 2017 and 2016
                                      19,743,000                         
        receivable for issuance of equity
                                       -1,667,000 -1,667,000 -1,667,000 -1,667,000 -1,667,000 -1,667,000 -1,667,000 -1,667,000   -1,000,000 -1,000,000 -1,000,000 -1,000,000 -1,000,000 -1,000,000 -1,000,000 -1,000,000 -1,000,000 -1,000,000 -1,000,000 -1,000,000 -1,000,000 -1,000,000 
        trade accounts receivable, net of allowance for doubtful accounts of 730 and 171 at september 30, 2017 and december 31, 2016, respectively
                                       34,699,000                        
        capitalized exploration costs—unproved oil and gas property
                                       5,741,000 3,436,000 1,145,000   39,965,000 35,969,000 26,878,000 17,615,000 11,315,000 4,308,000              
        series 2012-a, designated shares—8,750; at liquidation preference, consisting of 2,322 shares issued and outstanding at september 30, 2017 and december 31, 2016
                                       19,743,000                        
        trade accounts receivable, net of allowance for doubtful accounts of 456 and 171 at june 30, 2017 and december 31, 2016, respectively
                                        37,507,000                       
        series 2012-a, designated shares—8,750; at liquidation preference, consisting of 2,322 shares issued and outstanding at june 30, 2017 and december 31, 2016
                                        19,743,000                       
        trade accounts receivable, net of allowance for doubtful accounts of 169 and 171 at march 31, 2017 and december 31, 2016, respectively
                                         33,385,000                      
        advances from customers
                                         371,000 781,000 687,000 664,000 613,000 1,055,000 635,000 142,000 135,000 403,000 227,000 223,000 244,000 1,103,000 1,074,000 475,000 157,000 1,472,000 2,651,000    
        energy hedging contracts
                                         2,546,000 1,727,000 1,142,000 1,085,000 1,336,000 2,192,000 1,862,000 3,634,000 4,977,000 4,003,000             
        series 2012-a, designated shares—8,750; at liquidation preference, consisting of 2,322 shares issued and outstanding at march 31, 2017 and december 31, 2016
                                         19,743,000                      
        certificates of deposit
                                            8,885,000 8,868,000 8,850,000 8,832,000 4,685,000 4,677,000 4,669,000 4,661,000 1,734,000 1,732,000 4,343,000 5,339,000 5,205,000  2,205,000 2,205,000    
        trade accounts receivable, net of allowance for doubtful accounts of 171 and 182 at december 31, 2016 and 2015, respectively
                                          36,858,000                     
        revolving credit loan payable
                                            2,000,000 2,000,000 2,000,000                 
        series 2012-a, designated shares—8,750; at liquidation preference, consisting of 2,322 shares issued and outstanding at december 31, 2016 and 2015
                                          19,743,000                     
        trade accounts receivable, net of allowance for doubtful accounts of 174 and 182 at september 30, 2016 and december 31, 2015, respectively
                                           33,121,000                    
        amso, llc retirement obligations
                                           964,000 2,155,000                   
        series 2012-a, designated shares—8,750; at liquidation preference, consisting of 2,322 shares issued and outstanding at september 30, 2016 and december 31, 2015
                                           19,743,000                    
        trade accounts receivable, net of allowance for doubtful accounts of 174 and 182 at june 30, 2016 and december 31, 2015, respectively
                                            29,845,000                   
        series 2012-a, designated shares—8,750; at liquidation preference, consisting of 2,322 shares issued and outstanding at june 30, 2016 and december 31, 2015
                                            19,743,000                   
        trade accounts receivable, net of allowance for doubtful accounts of 177 and 182 at march 31, 2016 and december 31, 2015, respectively
                                             27,817,000                  
        series 2012-a, designated shares—8,750; at liquidation preference, consisting of 2,322 shares issued and outstanding at march 31, 2016 and december 31, 2015
                                             19,743,000                  
        trade accounts receivable, net of allowance for doubtful accounts of 182 and 227 at december 31, 2015 and 2014, respectively
                                              27,222,000                 
        series 2012-a, designated shares—8,750; at liquidation preference, consisting of 2,322 shares issued and outstanding at december 31, 2015 and 2014
                                              19,743,000                 
        trade accounts receivable, net of allowance for doubtful accounts of 195 and 227 at september 30, 2015 and december 31, 2014, respectively
                                               27,715,000                
        receivables for issuance of equity
                                               -3,500,000 -3,500,000               
        trade accounts receivable, net of allowance for doubtful accounts of 210 and 227 at june 30, 2015 and december 31, 2014, respectively
                                                24,970,000               
        series 2012-a, designated shares—8,750; at liquidation preference, consisting of 2,322 shares issued and outstanding at june 30, 2015 and december 31, 2014
                                                19,743,000               
        trade accounts receivable, net of allowance for doubtful accounts of 233 and 227 at march 31, 2015 and december 31, 2014, respectively
                                                 39,536,000              
        series 2012-a, designated shares—8,750; at liquidation preference, consisting of 2,322 shares issued and outstanding at march 31, 2015 and december 31, 2014
                                                 19,743,000              
        trade accounts receivable, net of allowance for doubtful accounts of 227 at december 31, 2014 and 930 at december 31, 2013
                                                  31,427,000             
        series 2012-a, designated shares—8,750; at liquidation preference, consisting of 2,322 and 1,917 shares issued and outstanding at december 31, 2014 and 2013, respectively
                                                  19,743,000             
        (accumulated deficit) retained earnings
                                                  -7,759,000             
        trade accounts receivable, net of allowance for doubtful accounts of 1,238 at september 30, 2014 and 930 at december 31, 2013
                                                   24,976,000            
        receivable due from related party
                                                   263,000            
        trade accounts receivable, net of allowance for doubtful accounts of 931 at june 30, 2014 and 930 at december 31, 2013
                                                    29,927,000           
        series 2012-a, designated shares—8,750; at liquidation preference, consisting of 2,322 and 1,917 shares issued and outstanding at june 30, 2014 and december 31, 2013, respectively
                                                    19,743,000           
        trade accounts receivable, net of allowance for doubtful accounts of 930 at march 31, 2014 and december 31, 2013
                                                     76,372,000          
        series 2012-a, designated shares—8,750; at liquidation preference, consisting of 1,917 shares issued and outstanding at march 31, 2014 and december 31, 2013
                                                     16,303,000          
        marketable securities
                                                       401,000 3,919,000 6,468,000 10,485,000 11,459,000 6,936,000   
        trade accounts receivable, net of allowance for doubtful accounts of 930 at december 31, 2013 and 130 at december 31, 2012
                                                      42,926,000         
        dividend payable
                                                          211,000     
        series 2012-a, designated shares—8,750; at liquidation preference, consisting of 1,917 and 1,605 shares issued and outstanding at december 31, 2013 and 2012, respectively
                                                      16,303,000         
        trade accounts receivable, net of allowance for doubtful accounts of 130 at september 30, 2013 and december 31, 2012
                                                       39,133,000        
        dividends payable
                                                         306,000    758,000  
        series 2012-a, designated shares—8,750; at liquidation preference, consisting of 1,917 and 1,605 shares issued and outstanding at september 30, 2013 and december 31, 2012, respectively
                                                       16,303,000        
        trade accounts receivable, net of allowance for doubtful accounts of 130 at june 30, 2013 and december 31, 2012
                                                        35,501,000       
        series 2012-a, designated shares—8,750; at liquidation preference, consisting of 1,917 and 1,605 shares issued and outstanding at june 30, 2013 and december 31, 2012, respectively
                                                        16,303,000       
        restricted cash
                                                         10,824,000 10,841,000 10,321,000 10,329,000 40,000 113,000 
        certificate of deposit
                                                         2,205,000      
        trade accounts receivable, net of allowance for doubtful accounts of 130 at march 31, 2013 and december 31, 2012
                                                         47,420,000      
        deferred income tax assets—current portion
                                                         599,000  519,000 4,409,000 3,198,000  
        series 2012-a, designated shares—8,750; at liquidation preference, consisting of 1,917 and 1,605 shares issued and outstanding at march 31, 2013 and december 31, 2012, respectively
                                                         16,303,000      
        trade accounts receivable, net of allowance for doubtful accounts of 130 at december 31, 2012 and 2011
                                                          40,932,000     
        deferred income tax assets, net—current portion
                                                          599,000     
        deferred income tax assets, net—long-term portion
                                                               
        series 2012-a, designated shares—8,750; at liquidation preference, consisting of 1,605 and nil shares issued and outstanding at december 31, 2012 and 2011, respectively
                                                          13,639,000     
        trade accounts receivable, net of allowance for doubtful accounts of 130 at september 30, 2012 and december 31, 2011
                                                           35,789,000    
        property, plant and equipment
                                                           421,000 445,000 426,000 376,000 
        licenses
                                                           150,000    
        deferred income tax assets—long-term portion
                                                            1,819,000 1,819,000  
        accumulated other comprehensive loss
                                                           -75,000 -188,000 -103,000  
        trade accounts receivable, net of allowance for doubtful accounts of 130 at june 30, 2012 and december 31, 2011
                                                            26,831,000   
        trade accounts receivable, net of allowance for doubtful accounts of 130 at march 31, 2012 and december 31, 2011
                                                             27,459,000  
        trade accounts receivable, net of allowance for doubtful accounts of 130 at october 31, 2011 and july 31, 2011
                                                              20,345,000 
        due from idt corporation
                                                              11,892,000 
        deferred income tax asset—current portion
                                                              2,657,000 
        investment in amso, llc
                                                              216,000 
        deferred income tax asset—long-term portion
                                                              1,818,000 
        contingencies
                                                               
      Cashflow Statements:
      Quarterly
      Annual
        Unit: USD2025-12-31 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 2011-10-31 
                                                                 
          operating activities
                                                                 
          net income
        3,816,000 6,730,000 2,868,000 10,301,000 -15,459,000 10,229,000 9,356,000 8,169,000 -23,650,000 14,198,000 15,338,000 14,392,000 16,851,000 15,971,000 37,373,000 16,736,000 27,567,000 -2,316,000 5,285,000 -2,694,000 2,056,000 6,197,000 880,000 6,421,000 -988,000 4,708,000 -8,501,000 6,160,000 12,369,000 5,664,000 -2,492,000 5,859,000   -11,844,000 3,034,000   2,108,000 5,667,000            -97,000    1,203,000 1,015,000 
          net income from discontinued operations, net of tax
            -2,472,000 -25,000 -145,000 -265,000 486,000 -304,000 3,172,000 3,055,000 4,516,000                                             
          net income from continuing operations
        7,918,000 6,735,000 2,821,000 10,405,000 -12,987,000 10,254,000 9,501,000 8,434,000 -24,136,000 14,502,000 12,166,000 11,337,000 12,335,000 -9,958,000 37,373,000 16,736,000                                          
          adjustments to reconcile net income to net cash from operating activities:
                                                                 
          depreciation and amortization
        283,000 252,000 235,000 235,000 238,000 231,000 196,000 219,000 177,000 95,000 95,000 96,000 97,000 -244,000 248,000 284,000 -2,044,000 880,000 1,115,000 1,331,000 1,329,000 671,000 722,000 826,000 830,000 942,000 934,000 921,000 417,000 462,000 589,000 594,000 612,000 487,000 571,000 470,000                      
          deferred income taxes
                      7,106,000 -87,000 -2,037,000 -97,000 2,744,000 230,000 2,434,000 2,301,000 184,000 2,353,000 1,880,000 814,000 -1,665,000 2,442,000 -13,596,000 113,000 183,000       -95,000 102,000   -542,000       -79,000 5,708,000 -1,211,000 90,000 -621,000 
          provision for credit losses
        736,000 419,000                                                        
          stock-based compensation
        597,000 593,000 606,000 739,000 623,000 516,000 458,000 749,000 529,000 606,000 749,000 899,000 736,000 662,000 730,000 840,000 1,250,000 532,000 559,000 589,000 -197,000 447,000 401,000 483,000 -4,000 334,000 324,000 448,000 837,000 1,081,000 1,258,000 1,347,000 1,417,000 1,827,000 731,000 1,238,000 1,316,000 1,160,000 1,127,000 1,210,000 1,155,000 1,241,000 1,596,000 1,237,000 2,266,000 4,929,000 1,724,000 1,839,000 1,025,000 1,064,000 1,135,000 956,000 815,000 973,000 958,000 683,000 239,000 
          inventory valuation allowance
            417,000 319,000                                                 
          impairment of assets
        1,602,000 5,000   -14,000 81,000     19,000         404,000                                    
          unrealized loss on marketable equity securities and investments and others
                363,000                                                 
          charitable donation of class b common stock
                                                                 
          change in assets and liabilities, net of effect of acquisition:
                                                                 
          trade accounts receivable
        -11,814,000 1,919,000 2,348,000 -2,668,000 -12,230,000 3,451,000 5,472,000 1,093,000 -1,866,000 -2,803,000 6,175,000 -10,643,000 -12,008,000 -11,506,000 4,006,000 3,169,000 97,000 -4,413,000 6,747,000 -9,904,000 -9,508,000 -4,020,000 3,128,000 3,719,000 -10,434,000 -4,524,000 6,471,000 -3,554,000 1,169,000 -6,440,000 9,202,000 3,886,000 -10,299,000 3,109,000 -4,282,000 3,448,000 -126,000 -3,282,000 -2,030,000 -592,000 504,000 -2,735,000 14,582,000 -8,117,000 -6,453,000 4,643,000 46,445,000 -33,446,000 -4,478,000 -3,632,000 11,919,000 -6,488,000 -5,144,000 -6,768,000 700,000 -3,499,000 5,731,000 
          inventory
        11,681,000 -3,995,000 -3,144,000 -1,538,000 -3,676,000 -2,023,000 8,807,000 -2,191,000 -2,600,000 -3,642,000 1,159,000 -3,631,000 2,802,000 -2,474,000 2,822,000 -1,145,000 5,928,000 -7,995,000 3,367,000 -2,090,000 -3,516,000 1,288,000 3,359,000 -1,429,000 -7,003,000 1,225,000 -1,169,000 208,000 -838,000 -147,000 -2,089,000 -1,690,000 875,000 -143,000 2,204,000 -933,000 1,138,000 464,000 -505,000 4,640,000 171,000 -1,681,000 -1,410,000 2,646,000 -2,187,000 -4,261,000 -4,067,000 2,693,000 134,000 -1,625,000 -1,584,000 2,375,000 127,000 -1,076,000 -715,000 3,087,000 -2,078,000 
          prepaid expenses
        -45,000 -1,142,000 -532,000 390,000 1,293,000 -446,000 3,898,000 581,000 -2,336,000 -1,782,000 -939,000 -1,032,000 983,000 -1,792,000 -205,000 -1,644,000 592,000 -382,000 238,000 -1,380,000 -452,000 150,000 3,372,000 -1,356,000 271,000 1,674,000 -3,389,000 1,320,000 76,000 150,000 -518,000 511,000 1,123,000 -749,000 -1,859,000 -542,000 3,543,000 1,774,000 2,000 2,220,000 -4,420,000 1,747,000 -294,000 -2,648,000 -1,543,000 -958,000 1,223,000 -1,028,000 -744,000 -1,425,000 327,000 1,749,000 -626,000 -839,000 1,260,000 843,000 -1,454,000 
          other current assets and other assets
        220,000 263,000 -673,000 -209,000 -3,534,000 -123,000 1,414,000 505,000 -2,143,000 1,696,000 -197,000 1,138,000 489,000 28,128,000 -36,958,000 2,746,000 -6,977,000 -10,516,000 -3,753,000 888,000 -2,575,000 -856,000 8,696,000 -8,473,000 -106,000 1,941,000 343,000 -1,041,000 309,000 2,297,000 -2,783,000 2,903,000 -1,576,000 1,669,000 -1,941,000 -1,855,000 -78,000 2,434,000 1,562,000 -1,055,000 -1,602,000 2,041,000 -182,000 -2,603,000 -1,521,000 -1,473,000 801,000 -471,000 707,000 -780,000 -294,000 124,000 301,000 -127,000 -73,000 -884,000 -1,322,000 
          trade accounts payable, accrued expenses and other current liabilities
                    9,065,000 14,116,000 -1,893,000 -9,653,000 6,299,000 6,023,000 -8,494,000 7,885,000 13,932,000 3,024,000 -4,350,000 3,344,000 -24,000 3,539,000 3,106,000 -1,115,000 -2,895,000 3,235,000 -1,311,000 -6,328,000 6,270,000 -1,284,000 11,695,000 -1,571,000 -2,127,000 -6,488,000 2,321,000 -2,998,000 4,480,000 -1,096,000 -4,202,000 4,507,000   -19,276,000 7,620,000 9,439,000 444,000 -2,991,000 -9,000 1,767,000 2,735,000 3,099,000 -1,326,000 -4,910,000 
          due to idt corporation
        -205,000 190,000 -9,000 1,000 19,000 -33,000 29,000 -25,000 25,000 -24,000 45,000 -66,000 31,000 -14,000 7,000 -391,000 423,000 -195,000 115,000 -68,000 142,000 20,000 -42,000 -244,000 228,000 -39,000 58,000 -100,000 158,000 -64,000 20,000 -94,000 36,000 -8,000 122,000 -62,000 80,000 -51,000 -74,000 -253,000 358,000 -86,000 31,000 -407,000 -289,000 576,000 23,000 -309,000 19,000 222,000 -146,000 -154,000 25,000 121,000 -160,000 -143,000  
          income taxes payable
        -3,051,000 2,441,000 -5,777,000 4,400,000 -3,793,000 3,927,000 -552,000 2,914,000 -9,311,000 5,015,000 -16,585,000 5,004,000 5,055,000 6,898,000 -5,449,000 6,560,000 3,358,000 3,917,000 415,000 210,000 345,000 -658,000 409,000 206,000 -435,000 1,074,000 -971,000 460,000 -513,000 676,000 -1,658,000 754,000 1,098,000 420,000 -2,491,000 751,000 58,000 454,000 290,000 701,000 -282,000 649,000 -45,000 58,000 264,000 34,000 259,000 -2,089,000 138,000 -60,000 -85,000 838,000 329,000 -1,299,000 -1,001,000 591,000 1,308,000 
          net cash from operating activities of continuing operations
        15,938,000 13,932,000 672,000 13,519,000 11,087,000 22,850,000 17,606,000 8,718,000 18,377,000 27,992,000 3,049,000 1,520,000 21,056,000 17,397,000 9,211,000 18,340,000                                          
          net cash from operating activities of discontinued operations
        444,000 1,830,000 1,911,000 1,559,000 2,803,000 4,208,000  3,790,000 5,957,000 9,714,000                                              
          net cash from operating activities
        15,938,000 13,932,000 1,116,000 15,349,000 12,998,000 24,409,000 20,409,000 12,926,000 10,456,000 31,782,000 9,006,000 11,234,000 27,586,000 25,547,000 9,211,000 18,340,000 66,908,000 5,957,000 4,082,000 -9,953,000 -919,000 10,396,000 16,359,000 -2,717,000 -185,000 12,065,000 -3,146,000 7,018,000 -865,000 8,170,000 3,431,000 8,638,000  6,645,000 -6,908,000 3,640,000 3,944,000 -1,685,000 4,171,000 9,120,000 -3,641,000 4,021,000 5,825,000 -9,286,000 -11,008,000 -992,000 22,616,000 -29,718,000 1,903,000 -2,046,000 2,198,000 -835,000 -1,881,000 -711,000 71,000 1,513,000 -889,000 
          investing activities
                                                                 
          capital expenditures
        -2,411,000 -2,081,000 -1,909,000 -1,773,000 -2,671,000 -2,463,000 -356,000 -1,206,000 -485,000 -317,000 -463,000 -98,000 39,000 -998,000 -1,000 -59,000 32,000 -78,000 -60,000 -20,000 -42,000 -26,000 -94,000 -5,000 -61,000 -14,000 -4,000 -325,000 -9,000 -205,000 -26,000 -344,000  -372,000 -2,654,000 -222,000 -137,000 -314,000 -51,000 -84,000 -20,000 -15,000 -289,000 -176,000 -495,000 -652,000 -114,000 -13,000 -223,000 -66,000 -11,000 -27,000 -15,000 -37,000 -12,000 -58,000 
          free cash flows
        13,527,000 11,851,000 -793,000 13,576,000 10,327,000 21,946,000 20,053,000 11,720,000 9,971,000 31,465,000 8,543,000 11,136,000 27,625,000 24,549,000 9,210,000 18,281,000 66,940,000 5,879,000 4,022,000 -9,973,000 -961,000 10,370,000 16,265,000 -2,722,000 -246,000 12,051,000 -3,150,000 6,693,000 -874,000 7,965,000 3,405,000 8,294,000  6,273,000 -9,562,000 3,418,000 3,807,000 -1,999,000 4,120,000 9,036,000 -3,641,000 4,001,000 5,810,000 -9,575,000 -11,184,000 -1,487,000 21,964,000 -29,832,000 1,890,000 -2,269,000 2,132,000 -846,000 -1,908,000 -726,000 34,000 1,501,000 -947,000 
          purchase of marketable equity securities and other investments
                -1,106,000 -601,000                                                
          purchase and improvement of investment property, net of noncontrolling interest portion paid by howard jonas
                                                                 
          proceeds from sale of marketable equity securities and other investments
                                                                 
          purchase of equity of subsidiary
            -1,200,000                           -278,000                      
          purchase of solar system facilities
                                                                 
          net cash from investing activities of continuing operations
            -4,492,000    -9,256,000 814,000 2,599,000 -4,162,000 -1,390,000 -1,615,000 -601,000 -1,628,000                                          
          net cash from investing activities of discontinued operations
                21,067,000    -147,000 5,505,000 -27,614,000 -21,832,000                                          
          net cash from investing activities
        -4,963,000 -3,132,000 -5,158,000 -2,093,000 -4,492,000 -4,397,000 -1,304,000 -5,844,000 11,811,000 3,392,000 2,599,000 -4,162,000 -1,537,000 3,890,000 -28,215,000 -23,460,000 31,000 -827,000 4,490,000 -1,007,000 -1,164,000 19,000 -1,877,000 -5,000 -2,777,000 -920,000 156,000 -2,232,000 332,000 -2,271,000 -771,000 -228,000 -3,203,000 -7,490,000 -4,838,000 -997,000 -8,837,000 8,536,000 -1,049,000 -8,178,000 -9,279,000 -11,142,000 -6,544,000 -4,660,000 -772,000 -3,416,000 -1,276,000 2,486,000 -114,000 2,381,000 -1,723,000 3,227,000 9,492,000 -7,918,000 -18,715,000 -600,000 -2,048,000 
          financing activities
                                                                 
          dividends paid
        -1,988,000 -1,999,000 -2,010,000 -2,026,000 -2,039,000 -2,019,000 -2,031,000 -2,121,000 -2,055,000 -2,055,000 -2,655,000 -2,108,000   -2,365,000 -2,304,000 -369,000 -371,000 -370,000 -370,000 -2,599,000 -2,588,000 -4,585,000 -370,000 -2,375,000 -2,411,000 -2,432,000 -2,377,000 -2,386,000 -2,387,000 -2,248,000 -2,235,000 -2,234,000 -2,234,000 -2,220,000 -2,220,000 -1,848,000 -1,850,000 -1,848,000 -1,849,000 -370,000 -371,000 -1,850,000 -1,840,000 -1,843,000 -371,000 -305,000 -306,000 -305,000 -305,000 -310,000 -211,000 -1,149,000 -1,907,000 -1,149,000  
          repurchases of class b common stock
        -2,058,000 -1,986,000 -2,732,000 -1,887,000 -2,535,000 -2,011,000 -1,796,000 -4,101,000                                 -5,000                 
          repurchases of class b common stock from employees in connection with vesting of restricted shares
                                                                 
          repurchases of class b common stock from employees in connection with exercise of stock options
                                                                 
          payment of term loan
                                                                 
          repurchase of class b common stock from genie foundation
                                                               
          proceeds from term loan
                                                                 
          proceeds from exercise of warrants
                                                                 
          redemption of preferred stock
                -7,359,000 -1,000,000 -8,384,000 -1,000,000                                            
          net cash from financing activities of continuing operations
                                                                 
          effect of exchange rate changes on cash, cash equivalents and restricted cash
                                                                 
          net increase in cash, cash equivalents and restricted cash
                                                                 
          cash, cash equivalents and restricted cash (excluding discontinued operations) at beginning of year
                                                                 
          cash, cash equivalents and restricted cash (including discontinued operations) at end of year
                                                                 
          less: cash of discontinued operations at end of year
                                                                 
          cash and cash equivalents and restricted cash (excluding discontinued operations) at end of year
                                                                 
          supplemental disclosure of cash flow information
                                                                 
          cash payments made for interest
                                                                 
          cash payments made for income taxes
                                                                 
          net loss from discontinued operations, net of tax
         -5,000 47,000 -104,000                                                      
          adjustments to reconcile net income to net cash from operating activities of continuing operations:
                                                                 
          provision for captive insurance liability
         460,000 265,000 645,000 30,945,000 991,000 640,000 1,036,000                                                  
          unrealized gain on marketable equity securities and investments and others
         -487,000 -451,000 -171,000  -194,000 -394,000 -49,000                                                  
          changes in assets and liabilities:
                                                                 
          trade accounts payable, accrued expenses and other liabilities
         6,279,000 4,401,000 981,000  5,777,000 -12,462,000 -5,694,000  13,393,000 -379,000 -2,051,000                                              
          purchases of marketable equity securities and other investments
         -250,000    -1,000,000 -948,000 -2,094,000                                                  
          improvements in investment property
         -801,000 -705,000 -370,000                                                      
          purchase of solar system facility
             -1,344,000                                                  
          proceeds from return of investments
         1,123,000 50,000                                                      
          repurchases of class b common stock from employees
         -1,664,000 -462,000 -2,106,000 -1,508,000 -550,000 -863,000 -1,310,000 -165,000 -158,000 -338,000 -71,000             -106,000     -806,000 -23,000  -29,000   -22,000      -144,000 -126,000  -133,000  
          net cash from financing activities
         -5,649,000 -4,742,000 -4,375,000  -6,136,000 -4,595,000 -7,730,000  -2,918,000 -6,324,000 -3,273,000      -2,019,000 -2,805,000 -370,000 -3,698,000 -2,929,000 -9,100,000 533,000 -3,781,000 -5,710,000 -1,647,000 -4,485,000 -2,502,000 -3,170,000 3,752,000 -2,235,000  -3,074,000 9,235,000 -2,072,000 -2,088,000 -3,694,000 -1,927,000 -1,982,000 3,294,000 -348,000 511,000 -1,862,000 -2,255,000 23,224,000 -1,000 -283,000 116,000 -449,000 -307,000 -287,000 -10,088,000 -1,149,000 -1,907,000 -1,277,000 71,412,000 
          effect of exchange rate changes on cash, cash equivalents, and restricted cash
         -5,000 16,000 -80,000  20,000 -214,000 74,000  98,000 -27,000 -10,000  105,000 -147,000 27,000  -167,000 15,000 -69,000  -15,000 -11,000 23,000  47,000 -35,000  41,000                            
          net increase in cash, cash equivalents, and restricted cash
         5,146,000 -8,768,000 8,801,000  13,896,000 14,296,000 -574,000  32,354,000 5,254,000 3,789,000      2,944,000    7,471,000 5,371,000 -2,166,000  5,435,000 -4,590,000 266,000  2,770,000 6,354,000 6,156,000                          
          cash, cash equivalents, and restricted cash (including cash held at discontinued operations) at beginning of period
         201,958,000  165,479,000                                                 
          cash, cash equivalents and restricted cash (including cash held at discontinued operations) at end of the period
         5,146,000 -8,768,000 210,759,000  13,896,000 14,296,000 164,905,000  32,354,000                                                
          less: cash of discontinued operations at end of period
         -15,000 67,000 933,000        858,000                                              
          cash, cash equivalents, and restricted cash (excluding cash held at discontinued operations) at end of period
         5,161,000 -8,835,000 209,826,000  13,332,000 15,901,000 162,019,000  28,745,000                                                
          provision for doubtful accounts receivable
           309,000 708,000 441,000 481,000 729,000 640,000 350,000 798,000 574,000 399,000 815,000 903,000 398,000 -6,268,000 5,479,000    994,000 607,000 608,000 205,000   72,000  108,000 207,000 295,000 370,000 206,000 161,000 25,000 3,000   -3,000 -11,000 -11,000 -15,000 8,000 2,000             
          purchase of investment property, net of noncontrolling interest portion paid by howard jonas
                                                                 
          investment in notes receivable with related party
                                                                 
          repayment of notes receivables with related party
                                                                 
          purchase of investment property, net of noncontrolling interest paid by howard jonas
                                                                 
          proceeds from the sale of marketable equity securities and other investments
                 2,014,000                                                
          repayment of notes receivable
                 19,000  19,000  1,000 13,000 -2,000 2,000   -8,000 -150,000 160,000 122,000 14,000 26,000 54,000 -1,000 446,000                     
          proceeds from the exercise of warrants
                                                                
          less: cash held at of discontinued operations at end of period
             564,000 -1,605,000 2,886,000  3,609,000                                                
          proceeds from settlement of equity method investment
                   133,000                                              
          net cash from discontinued operations
                    6,530,000                                             
          change in assets and liabilities:
                                                                 
          investment in notes receivables with related party
                     -117,000 -1,388,000                                          
          repurchase of class b common stock
                                                                
          unrealized loss on marketable equity securities and investment
                  -122,000 71,000                                              
          equity in the net loss in equity method investees
                     -158,000    -51,000    146,000 1,173,000 379,000    797,000                              
          proceeds from equity method investments
                                                                 
          equity in the net income in equity method investees
                   -195,000    -125,000                                          
          proceeds from the sale of marketable equity securities
                   343,000                                              
          purchase of marketable equity securities and other investment
                   -4,559,000   -600,000 -200,000                                          
          cash, cash equivalents, and restricted cash (including discontinued operations) at beginning of period
                   106,080,000   102,149,000                                          
          cash, cash equivalents and restricted cash (including discontinued operations) at end of the period
                   109,869,000  25,979,000 -27,930,000 94,681,000                                          
          cash, cash equivalents, and restricted cash (excluding discontinued operations) at end of period
                   109,011,000  20,509,000 -27,930,000 94,681,000                                          
          equity in the net income of equity method investees
                                                                 
          unrealized loss on marketable equity securities and investments
                                                                 
          gain on sale of subsidiary
                                                               
          purchases of short-term equity investments
                                                                 
          purchase of marketable equity security and investment
                                                                 
          proceeds from the sale of subsidiary, net of cash disposed
                                                                 
          purchases of class b common stock
                        -1,412,000   -70,000 -88,000 -1,458,000 -88,000                                  
          cash, cash equivalents and restricted cash (including discontinued operations) at beginning of year
                                                                 
          unrealized loss marketable equity securities and investment
                     -57,000 147,000 652,000                                          
          gain on sale of subsidiaries
                                                                 
          dividends paid to class a and class b common stock stockholders
                                                                 
          dividends paid to preferred stock stockholders
                                                                 
          net cash from by financing activities
                     -3,563,000 -8,779,000 -2,375,000                                          
          net decrease in cash, cash equivalents, and restricted cash
                     25,979,000 -27,930,000 -7,468,000    -11,986,000                                      
          cash, cash equivalents, and restricted cash at beginning of period
                         43,184,000  38,554,000  44,197,000  31,927,000                          
          net decrease in cash, cash equivalents, and restricted cash, including cash balances classified as held for sale
                       -7,468,000                                          
          less: cash balances classified as held for sale
                           -587,000                                      
          loss on sale of assets
                                                                 
          gain on deconsolidation of subsidiaries
                            -98,000                                  
          purchase of short-term equity investments
                                                                
          repayment of notes receivables
                                                                 
          proceeds from sale of assets
                                                                 
          repayment of notes payable
                            -842,000 905,000 -921,000 -9,000 -8,000 -9,000 -8,000 -20,000                              
          proceeds from exercise of stock options
                            10,000                    93,000   1,000 4,000 23,000 40,000 3,000 50,000 5,000  
          proceeds from revolving line of credit
                            1,000,000          4,000,000 10,450,000                      
          repayment of revolving line of credit
                                       -2,654,000 -10,001,000                      
          proceeds from loan
                                                               
          repayment of loan payable
                                                                
          unrealized gain on marketable equity securities and investment
                         5,312,000                                        
          loss on sale of assets held for sale
                             378,000                                    
          contract liability
                         3,129,000 1,526,000 -1,859,000 -568,000 314,000 -3,059,000 -9,648,000                                  
          proceeds from disposal of assets held for sale
                             43,000                                    
          proceeds from the sale of a subsidiary, net of cash disposed
                                                                
          purchase of marketable equity securities
                         -1,000,000                                      
          investments in equity method investee
                                                                
          payment for acquisition of intangible
                                                                
          purchase of class b common stock from employees upon vesting of restricted shares
                                                                 
          cash, cash equivalents, and restricted cash at end of period
                         2,944,000 6,369,000 31,198,000  7,471,000 5,371,000 36,388,000  5,435,000 -4,590,000 44,463,000  2,770,000 6,354,000 38,083,000                          
          payment of acquisition of intangible
                                                                 
          repayment of loan
                                                                 
          benefit from doubtful accounts receivable
                           1,126,000                                      
          unrealized gain marketable equity securities and investment
                           -4,107,000                                      
          equity in the net (income) loss in equity method investees
                           -110,000                                      
          net increase in cash, cash equivalents, and restricted cash, including cash balances classified as held for sale
                           -11,399,000                                      
          loss on sale disposal of assets
                                                                 
          gain on consolidation of subsidiary
                                                                 
          investments in notes receivable
                                                                 
          cash acquired from acquisition of shoreditch, net of cash payment
                                                                 
          payment for acquisition of lumo energia, net of cash acquired
                                                                 
          investments in equity method investees
                                                                 
          repayment of short-term debt—lumo energia
                                -2,260,000                              
          cash, cash equivalents and restricted cash at beginning of year
                                                                 
          cash, cash equivalents and restricted cash at end of year
                                                                 
          payments for business acquisition, net of cash acquired
                                 -1,852,000                              
          investments in notes receivables
                                 -37,000 -177,000                              
          repayment of short-term debt—lumo
                                                                 
          exercise of stock options
                                 440,000 793,000 172,000                             
          impairment of property and equipment
                               192,000                                  
          gain on sale disposal of property and equipment
                                                                 
          gain on extinguishment of liability
                                                                
          impairment of goodwill
                                                                 
          equity in the net loss of equity method investees
                                                                 
          proceeds from disposal of property
                                                               
          payment for acquisition of license in japan
                                                                 
          cash transferred to atid 613
                                                                 
          payment for acquisition, net of cash acquired
                                                                 
          proceeds from sales of class b common stock and warrants
                                                               
          supplemental schedule of non-cash financing and investing activities
                                                                 
          class b common stock issued for gre deferred stock units
                                                                
          carrying value of assets contributed to atid 613
                                                                 
          gain on sale of property and equipment
                                     -18,000                          
          proceeds from sale of property and equipment
                                     62,000                          
          payment for intangible acquisition
                                                                 
          investment in equity method investee
                                                                 
          cash transferred to atid
                                                                 
          purchase of class b common stock
                                                                 
          proceeds from sale of class b common stock and warrants
                                                                 
          purchase of class b common stock from employees
                                                                 
          supplemental schedule of non-cash financing activities
                                                                 
          liability incurred for acquisitions
                                 2,260,000                              
          carrying value of assets contributed to new atid
                                                                
          class b common stock issued for gre deferred units
                                                                 
          write-off of capitalized exploration costs
                                                                
          investments in capitalized exploration costs – unproved oil and gas property
                                                                 
          purchases of equity of subsidiary
                                                                
          proceeds from revolving line of credit and loan payable
                                                                 
          repayment of revolving line of credit and loan payable
                                                                 
          effect of exchange rate changes on cash and cash equivalents
                                       -19,000 51,000 -121,000 -30,000 208,000 -128,000 272,000 -222,000 153,000 32,000 -156,000 190,000 -64,000 -308,000 -374,000 106,000 -19,000 133,000 138,000 7,000 134,000 367,000 1,000 -17,000 8,000  
          net increase in cash and cash equivalents
                                         -4,040,000 -2,541,000 779,000  3,429,000   -9,594,000    -14,343,000 18,442,000 21,445,000 -27,534,000 2,038,000 24,000 175,000 2,239,000   -20,568,000 -356,000 68,475,000 
          cash and cash equivalents at beginning of year
                                                                 
          cash and cash equivalents at end of year
                                                                 
          receivable for issuance of equity written-off
                                                                 
          write-down of assets held for sale to fair value
                                     451,000                            
          payments for intangible acquisition
                                                                 
          investments in capitalized exploration costs—unproved oil and gas property
                                         -2,220,000 -2,184,000 -1,127,000  -126,000 -4,727,000 -8,031,000    -4,308,000              
          cash transferred from atid
                                                                 
          equity in the net loss of a joint venture
                                      715,000 506,000                          
          payments for acquisitions
                                                                 
          deposit for investment
                                          -94,000                      
          net loss
                                        -814,000    -1,287,000    -4,107,000 2,627,000 -4,726,000 -2,430,000 -10,429,000 -4,822,000 -5,009,000 -7,147,000  2,042,000    -1,084,000    
          adjustments to reconcile net loss to net cash from operating activities:
                                                                 
          loss on disposal of property
                                                      -1,000 38,000      
          gain from repayment of revolving credit loan payable
                                                                
          gain on consolidation of amso, llc
                                                               
          equity in the net loss of joint ventures
                                        406,000                         
          restricted cash
                                        -274,000 -24,000 158,000 47,000 -390,000 755,000 834,000 -294,000 -735,000 490,000 556,000 -1,373,000 441,000 -532,000 564,000 3,450,000 -4,048,000 404,000 -1,063,000 -6,000      
          net cash from (used in) operating activities
                                                                 
          cash acquired from consolidation of amso, llc
                                                               
          capital contribution to amso, llc received from total
                                                               
          capital contributions to amso, llc
                                            -63,000 -125,000        -355,000 -520,000 -1,063,000 -762,000 -1,177,000 -877,000 -909,000 -1,139,000 -2,040,000 
          investment in joint venture
                                        -2,695,000                         
          purchases of certificates of deposit
                                                       1,001,000 -2,330,000       
          proceeds from maturities of certificates of deposit
                                                  1,734,000 2,600,000         
          payment for acquisitions
                                               -104,000    -63,000              
          decrease in restricted cash
                                                               
          proceeds from sales of equity of subsidiaries
                                                                 
          collection of receivables for issuance of equity
                                                                 
          payment for option to purchase noncontrolling interests
                                                                 
          net cash from (used in) financing activities
                                                                 
          net decrease in cash and cash equivalents
                                               -887,000   -18,000 -15,872,000              
          cash and cash equivalents at beginning of period
                                        35,192,000 38,786,000 71,895,000 73,885,000 69,409,000 102,220,000 23,876,000 
          cash and cash equivalents at end of period
                                        523,000 -4,040,000 -2,541,000 35,971,000 -7,109,000 3,429,000 973,000 37,899,000 -9,594,000 -7,625,000 -18,000 56,023,000 -14,343,000 18,442,000 21,445,000 46,351,000 2,038,000 24,000 175,000 71,648,000 -2,110,000 -9,777,000 -20,568,000 101,864,000 92,351,000 
          subsidiary equity grant reclassified to liability
                                            -1,000                   
          liability incurred for acquisition
                                                                 
          receivables for issuance of equity of subsidiaries
                                                                 
          adjustments to reconcile net loss to net cash provided by operating activities:
                                                                 
          acquisition, net of cash acquired
                                                                 
          purchase of certificates of deposit
                                                                 
          supplemental schedule of non-cash investing and financing activities
                                                                 
          net assets excluding cash and cash equivalents of amso, llc acquired
                                                                
          equity in the net loss of amso, llc
                                            222,000 264,000        587,000 672,000 806,000 1,129,000 923,000 508,000 905,000 839,000 1,194,000 
          advances from customers
                                           -410,000 95,000 22,000 51,000 -442,000 421,000 493,000 6,000 -268,000 176,000 4,000 -21,000 -859,000 -347,000 598,000 318,000 -1,315,000 -1,179,000     
          goodwill impairment
                                                                 
          gain on adjustment to estimated contingent payments
                                                                 
          issuance of notes receivable
                                                                 
          proceeds from sales of class b common stock to howard s. jonas
                                                                 
          depreciation
                                             98,000 99,000 97,000 102,000 107,000 115,000 104,000 40,000 33,000 30,000 29,000 30,000 30,000 25,000 25,000 33,000 39,000 23,000 29,000 9,000 
          amso, llc retirement obligations
                                             -1,191,000                    
          payments for acquisition
                                             -44,000    -70,000               
          repayment of revolving credit loan payable
                                                                 
          proceeds from exercise of gogas stock option
                                                                
          receivable for issuance of equity of subsidiaries
                                                                
          change in assets and liabilities, net of effect of acquisitions:
                                                                 
          payment for acquisitions, net of cash acquired
                                                                 
          purchases of marketable securities
                                                            -4,554,000    
          proceeds from maturities of marketable securities
                                                           4,000,000      
          proceeds from revolving credit loan payable
                                                                 
          distributions to noncontrolling interests
                                                                 
          liabilities incurred for acquisitions
                                                                 
          investments in capitalized exploration costs-unproved oil and gas property
                                                 -6,865,000                
          issuance of note receivable
                                                        -250,000    -100,000    
          proceeds from purchases of class b common stock by howard s. jonas
                                                                 
          advance on sale of interest in subsidiary
                                                                
          purchase of licenses and security deposits
                                                                
          increase in restricted cash
                                                                 
          repurchases of common stock and class b common stock
                                                                 
          trade accounts payable, accrued expenses, other current liabilities and other liabilities
                                                                 
          proceeds from maturities and sale of marketable securities
                                                         3,502,000        
          capital contribution from idt corporation in connection with the spin-off
                                                                70,292,000 
          funding provided by idt corporation
                                                                1,120,000 
          repurchase of noncontrolling interests
                                                                 
          forgiveness of amount due from idt corporation
                                                                 
          receivable for issuance of equity of subsidiary
                                                                 
          purchases of licenses and security deposit
                                                                 
          purchase of marketable securities
                                                                 
          adjustments to reconcile net income to net cash (used in) provided by operating activities:
                                                                 
          issuance of notes receivable from employees
                                                                 
          funding provided by (repaid to) idt corporation
                                                                 
          proceeds from sales of stock of subsidiaries
                                                                 
          changes in restricted cash
                                                             8,000 -10,289,000 551,000  
          funding provided to idt corporation
                                                                 
          restricted cash and cash equivalents
                                                                50,000 
          capital contribution due from idt corporation in connection with the spin-off
                                                                11,892,000