7Baggers

Kosmos Energy Ltd
(NYSE:KOS) 

KOS stock logo

Kosmos Energy Ltd., a deepwater independent oil and gas exploration and production company, focuses along the Atlantic Margins. The company's primary assets include production offshore Ghana, Equatorial Guinea, and the U.S. Gulf of Mexico, as well as a gas development offshore Mauritania and Senegal...

Founded: 2003
Full Time Employees: 360
Sector: Energy
Industry: Oil & Gas E&P
Energy
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At a glance:
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Quarterly
Annual
    Unit: USD2026-03-31 2025-12-31 2025-09-30 2025-06-30 2025-03-31 2024-12-31 2024-09-30 2024-06-30 2024-03-31 2023-12-31 2023-09-30 2023-06-30 2023-03-31 2022-12-31 2022-09-30 2022-06-30 2022-03-31 2021-12-31 2021-09-30 2021-06-30 2021-03-31 2020-12-31 2020-09-30 2020-06-30 2020-03-31 2019-12-31 2019-09-30 2019-06-30 2019-03-31 2018-12-31 2018-09-30 2018-06-30 2018-03-31 2017-12-31 2017-09-30 2017-06-30 2017-03-31 2016-12-31 2016-09-30 2016-06-30 2016-03-31 2015-12-31 2015-09-30 2015-06-30 2015-03-31 2014-09-30 2014-06-30 2014-03-31 2013-09-30 2013-06-30 2013-03-31 2012-09-30 2012-06-30 2012-03-31 2011-09-30 2011-06-30 2011-03-31 
                                                             
      revenues and other income:
    		                                                         
      oil and gas revenue
    		370,728,000 294,623,000 310,959,000 392,635,000 290,135,000 397,561,000 407,794,000 450,900,000 419,103,000 507,765,000 526,348,000 273,255,000 394,240,000 509,916,000 456,056,000 620,368,000 659,015,000 572,558,000 198,936,000 384,045,000 176,474,000 274,153,000 224,786,000 127,314,000 177,780,000 449,657,000 357,036,000 395,933,000 296,790,000 301,446,000 242,833,000 215,191,000 127,196,000 187,104,000 151,240,000 136,363,000 103,432,000 156,118,000 46,628,000 45,506,000 62,125,000 121,748,000 96,584,000 119,200,000 109,164,000 137,485,000 328,297,000 212,853,000 215,169,000 193,413,000 228,066,000 222,375,000 112,214,000 115,771,000 230,262,000 124,083,000 92,569,000 
      other income
    		169,000 249,000 270,000 283,000 296,000 95,000 37,000 36,000 36,000 42,000 198,000 60,000 -373,000 3,806,000 48,000 43,000 52,000 52,000 66,000 74,000 70,000  1,000  1,000 30,000 -66,000 1,000  8,054,000 -280,000 282,000 -19,000  2,000 10,161,000 48,534,000 54,799,000 20,001,000 170,000 8,000 120,000 -1,266,000 713,000 642,000 882,000 869,000 439,000 133,000 321,000 254,000 725,000 175,000 30,000 91,000 157,000 487,000 
      total revenues and other income
    		370,897,000 296,472,000 311,229,000 393,518,000 290,431,000 397,656,000 407,831,000 450,936,000 419,139,000 507,807,000 526,546,000 273,315,000 393,867,000 563,722,000 456,104,000 620,882,000 659,067,000 572,610,000 200,540,000 384,119,000 176,570,000 366,316,000 224,787,000 127,314,000 177,781,000 460,215,000 356,970,000 395,934,000 296,790,000 309,500,000 250,219,000 215,473,000 127,177,000 187,104,000 151,242,000 146,524,000 151,966,000 210,917,000 66,629,000 45,676,000 62,133,000 121,868,000 95,318,000 121,813,000 132,557,000 138,436,000 329,362,000 237,119,000 215,379,000 193,778,000 228,390,000 223,237,000 112,671,000 116,547,000 232,845,000 126,853,000 95,410,000 
      yoy
    		27.71% -25.45% -23.69% -12.73% -30.71% -21.69% -22.55% 64.99% 6.42% -9.92% 15.44% -55.98% -40.24% -1.55% 127.44% 61.64% 273.26% 56.32% -10.79% 201.71% -0.68% -20.40% -37.03% -67.84% -40.10% 48.70% 42.66% 83.75% 133.37% 65.42% 65.44% 47.06% -16.31% -11.29% 126.99% 220.79% 144.58% 73.07% -30.10% -62.50% -53.13% -11.97% -71.06% -48.63% -38.45% -28.56% 44.21% 6.22% 91.16% 66.27% -1.91% 75.98% 18.09%     
      qoq
    		25.10% -4.74% -20.91% 35.49% -26.96% -2.49% -9.56% 7.59% -17.46% -3.56% 92.65% -30.61% -30.13% 23.60% -26.54% -5.79% 15.10% 185.53% -47.79% 117.54% -51.80% 62.96% 76.56% -28.39% -61.37% 28.92% -9.84% 33.41% -4.11% 23.69% 16.13% 69.43% -32.03% 23.71% 3.22% -3.58% -27.95% 216.55% 45.87% -26.49% -49.02% 27.85% -21.75% -8.11% -4.25% -57.97% 38.90% 10.09% 11.15% -15.15% 2.31% 98.13% -3.33% -49.95% 83.55% 32.96%  
      costs and expenses:
    		                                                         
      oil and gas production
    		130,595,000 150,780,000 147,696,000 243,118,000 167,308,000 152,692,000 133,471,000 150,733,000 93,618,000 103,800,000 138,782,000 63,579,000 83,936,000 125,792,000 62,372,000 90,189,000 124,703,000 134,135,000 50,316,000 115,803,000 45,752,000 103,850,000 84,277,000 88,747,000 61,603,000 136,297,000 95,540,000 90,977,000 79,799,000 73,066,000 55,078,000 49,815,000 46,768,000 46,173,000 39,187,000 21,604,000 19,886,000 43,720,000 13,574,000 32,681,000 29,392,000 29,855,000 23,157,000 20,224,000 32,100,000 15,097,000 22,946,000 16,323,000 32,576,000 22,674,000 24,401,000 44,873,000 19,592,000 7,326,000 24,185,000 14,301,000 19,995,000 
      exploration expenses
    		19,744,000 154,930,000 54,948,000 4,069,000 9,669,000 79,915,000 14,697,000 13,235,000 12,060,000 8,973,000 10,290,000 11,015,000 12,000,000 15,574,000 17,215,000 89,565,000 11,876,000 23,930,000 23,982,000 9,289,000 8,181,000 10,323,000 13,977,000 15,711,000 44,605,000 97,933,000 22,773,000 29,905,000 30,344,000 54,580,000 148,238,000 77,481,000 21,193,000 53,371,000 36,983,000 19,982,000 105,714,000 75,782,000 66,238,000 36,402,000 23,858,000 23,819,000 18,904,000 14,539,000 98,941,000 21,334,000 23,509,000 12,809,000 78,038,000 93,050,000 23,296,000 37,359,000 16,901,000 39,644,000    
      general and administrative
    		27,710,000 17,905,000 12,886,000 19,074,000 26,255,000 23,431,000 23,298,000 25,161,000 28,265,000 21,801,000 25,120,000 23,444,000 29,167,000 26,432,000 24,007,000 24,624,000 25,793,000 24,901,000 22,459,000 21,728,000 22,441,000 14,776,000 18,269,000 18,186,000 20,911,000 21,307,000 24,723,000 28,072,000 35,908,000 34,513,000 25,963,000 17,497,000 21,883,000 17,747,000 20,029,000 14,739,000 15,787,000 27,951,000 21,914,000 19,838,000 17,920,000 30,271,000 26,692,000 41,179,000 38,667,000 35,148,000 32,480,000 27,413,000 35,646,000 43,111,000 40,030,000 40,666,000 34,799,000 39,323,000 39,093,000 19,760,000 13,287,000 
      depletion, depreciation and amortization
    		119,873,000 143,325,000 141,514,000 151,268,000 120,667,000 145,024,000 120,728,000 90,094,000 100,928,000 113,293,000 132,347,000 89,913,000 109,374,000 111,295,000 106,313,000 121,679,000 158,969,000 174,605,000 64,914,000 151,161,000 76,541,000 159,472,000 111,231,000 121,857,000 93,302,000 147,675,000 146,653,000 151,438,000 118,095,000                             
      interest and other financing costs
    		58,802,000 58,835,000 57,919,000 54,834,000 51,842,000 12,759,000 22,112,000 37,279,000 16,448,000 21,525,000 25,440,000 24,371,000 24,568,000 25,943,000 29,796,000 29,382,000 33,139,000 37,644,000 26,873,000 39,326,000 24,528,000 26,617,000 27,068,000 28,274,000 27,835,000 29,509,000 30,721,000 59,803,000 35,041,000 33,063,000 23,549,000 18,870,000 25,694,000 22,866,000 18,478,000 19,465,000 16,786,000 13,879,000 11,066,000 8,878,000 10,324,000 7,534,000 9,926,000 8,998,000 10,751,000             
      derivatives
    		251,996,000 -35,185,000 -3,646,000 -21,566,000 6,732,000 6,383,000 -15,254,000 -2,852,000 23,822,000 -31,034,000 45,971,000 3,031,000 -6,840,000 17,358,000 -113,842,000 75,204,000 282,172,000 17,579,000 38,224,000 111,921,000 102,461,000 51,956,000 1,187,000 100,075,000 -136,038,000 36,001,000 -27,016,000 -14,185,000 77,085,000 -267,537,000 57,357,000 140,272,000 38,478,000 96,372,000 26,864,000 -25,411,000 -37,857,000 14,269,000 -16,891,000 54,988,000 -4,345,000 -81,070,000 -142,129,000 44,877,000   21,566,000  7,585,000  5,508,000 24,529,000  3,860,000  1,363,000 8,871,000 
      other expenses
    		3,264,000 -1,363,000 6,384,000 6,481,000 1,989,000 11,285,000 2,227,000 2,162,000 2,029,000 5,792,000 11,055,000 4,779,000 2,030,000 -7,734,000 -218,000 -3,528,000 2,426,000 9,108,000 194,000 -2,659,000 3,468,000 9,840,000 2,805,000 1,228,000 23,929,000 12,850,000 11,472,000 -1,793,000 2,119,000 1,663,000 -12,807,000 938,000  3,558,250 5,037,000      14,733,000             748,000    
      total costs and expenses
    		611,984,000 666,790,000 417,701,000 457,278,000 384,462,000 431,489,000 301,279,000 315,812,000 277,170,000 466,428,000 389,005,000 220,132,000 254,235,000 763,626,000 126,137,000 426,731,000 646,214,000 416,821,000 228,516,000 447,839,000 284,043,000 382,579,000 261,279,000 374,130,000 295,005,000 462,492,000 317,435,000 346,495,000 358,370,000 22,475,000 364,912,000 364,091,000 201,751,000 308,647,000 216,162,000 131,252,000 158,630,000 268,337,000 118,890,000 169,544,000 123,148,000 55,903,000 -27,165,000 171,615,000 185,767,000 80,845,000 192,071,000 111,367,000 225,643,000 218,341,000 164,205,000 233,564,000 114,993,000 137,802,000 130,588,000 124,409,000 163,572,000 
      income before income taxes
    		-241,087,000 -370,318,000 -106,472,000 -63,760,000 -94,031,000 -33,833,000 106,552,000 135,124,000 141,969,000 41,379,000 137,541,000 53,183,000 139,632,000 -199,904,000 329,967,000 194,151,000 12,853,000 155,789,000 -27,976,000 -63,720,000 -107,473,000 -16,263,000 -36,492,000 -246,816,000 -117,224,000 -2,277,000 39,535,000 49,439,000 -61,580,000 287,025,000 -114,693,000 -148,618,000 -74,574,000 -121,543,000 -64,920,000 15,272,000 -6,664,000 -57,420,000 -52,261,000 -123,868,000 -61,015,000 65,965,000 122,483,000   57,591,000 137,291,000 125,752,000   64,185,000    102,257,000 2,444,000  
      income tax expense
    		-15,513,000 6,823,000 17,827,000 23,980,000 16,575,000 -27,254,000 61,578,000 75,354,000 50,283,000 19,698,000 52,356,000 29,838,000 56,323,000 -85,628,000 107,713,000 76,978,000 11,453,000 57,073,000 621,000 -6,533,000 -16,705,000 -24,219,000 892,000 -47,425,000 65,543,000 33,496,000 23,470,000 32,602,000  101,460,000 11,364,000 -45,345,000  11,100,250 -1,515,000      -2,022,000 41,965,000 62,218,000 25,390,000 25,699,000 38,468,000 80,784,000 50,783,000 34,224,000 46,253,000 44,091,000 25,923,000  16,286,000    
      net income
    		-225,574,000 -377,141,000 -124,299,000 -87,740,000 -110,606,000 -6,579,000 44,974,000 59,770,000 91,686,000 21,681,000 85,185,000 23,345,000 83,309,000 -114,276,000 222,254,000 117,173,000 1,400,000 98,716,000 -28,597,000 -57,187,000 -90,768,000 7,956,000 -37,384,000 -199,391,000 -182,767,000 -35,773,000 16,065,000 16,837,000 -52,906,000 185,565,000 -126,057,000 -103,273,000 -50,226,000 -122,079,000 -63,405,000 -8,467,000 -28,841,000 -56,700,000 -59,763,000 -108,324,000 -58,993,000 24,000,000 60,265,000 -75,192,000 -78,909,000 19,123,000 56,507,000 74,969,000 -44,488,000 -70,816,000 20,094,000    51,776,000   
      yoy
    		103.94% 5632.50% -376.38% -246.80% -220.64% -130.34% -47.20% 156.03% 10.06% -118.97% -61.67% -80.08% 5850.64% -215.76% -877.19% -304.89% -101.54% 1140.77% -23.50% -71.32% -50.34% -122.24% -332.70% -1284.24% 245.46% -119.28% -112.74% -116.30% 5.34% -252.00% 98.81% 1119.71% 74.15% 115.31% 6.09% -92.18% -51.11% -336.25% -199.17% 44.06% -25.24% 25.50% 6.65% -200.30% 77.37% -127.00% 181.21%    -61.19%       
      qoq
    		-40.19% 203.41% 41.67% -20.67% 1581.20% -114.63% -24.75% -34.81% 322.89% -74.55% 264.90% -71.98% -172.90% -151.42% 89.68% 8269.50% -98.58% -445.20% -49.99% -37.00% -1240.87% -121.28% -81.25% 9.10% 410.91% -322.68% -4.59% -131.82% -128.51% -247.21% 22.06% 105.62% -58.86% 92.54% 648.85% -70.64% -49.13% -5.13% -44.83% 83.62% -345.80% -60.18% -180.15% -4.71% -512.64% -66.16% -24.63% -268.52% -37.18% -452.42%        
      net income margin %
    		-60.82% -127.21% -39.94% -22.30% -38.08% -1.65% 11.03% 13.25% 21.87% 4.27% 16.18% 8.54% 21.15% -20.27% 48.73% 18.87% 0.21% 17.24% -14.26% -14.89% -51.41% 2.17% -16.63% -156.61% -102.80% -7.77% 4.50% 4.25% -17.83% 59.96% -50.38% -47.93% -39.49% -65.25% -41.92% -5.78% -18.98% -26.88% -89.70% -237.16% -94.95% 19.69% 63.23% -61.73% -59.53% 13.81% 17.16% 31.62% -20.66% -36.54% 8.80% 0% 0% 0% 22.24% 0% 0% 
      net income per share
    		                                                         
      basic
    		-0.45 -0.79 -0.26 -0.18 -0.23 -0.02 0.1 0.13 0.2 0.04 0.19 0.05 0.18 -0.25 0.49 0.26  0.24 -0.07 -0.14 -0.22 0.02 -0.09 -0.49 -0.45 -0.09 0.04 0.04 -0.13 0.47 -0.31 -0.26 -0.13 -0.31 -0.16 -0.02 -0.07 -0.15 -0.15 -0.28 -0.15 0.07 0.16 -0.2 -0.21 0.05 0.15 0.2 -0.12 -0.19 0.05 -0.1 -0.07 -0.1 0.13   
      diluted
    		-0.45 -0.79 -0.26 -0.18 -0.23 -0.01 0.09 0.12 0.19 0.04 0.18 0.05 0.17 -0.24 0.47 0.25  0.24 -0.07 -0.14 -0.22 0.02 -0.09 -0.49 -0.45 -0.09 0.04 0.04 -0.13 0.47 -0.31 -0.26 -0.13 -0.31 -0.16 -0.02 -0.07 -0.15 -0.15 -0.28 -0.15 0.07 0.15 -0.2 -0.21 0.05 0.15 0.19 -0.12 -0.19 0.05 -0.1 -0.07 -0.1 0.13   
      weighted-average number of shares used to compute net loss per share:
    		                                                         
      basic
    		506,198 477,591 478,254 478,068 475,681 470,844 471,816 471,599 468,042 459,641 460,108 459,984 458,318 455,346 455,840 455,512 454,102 416,943 408,520 408,131 407,365 405,212 405,409 405,195 404,759 401,368 401,466 401,323 401,164 404,585 404,536 396,826 395,600 388,375 389,058 387,952 387,312 385,402 386,026 384,918 384,435 382,610 383,924 382,138 380,355 379,969 378,820 377,830 377,654 376,563 375,284 373,448 370,720 369,227 368,996   
      diluted
    		506,198 477,591 478,254 478,068 475,681 476,691 479,190 480,172 482,096 481,070 481,099 479,016 479,326 474,857 476,431 475,645 469,164 416,943 408,520 408,131 407,365 405,212 405,409 405,195 404,759 401,368 410,992 408,230 401,164 404,585 404,536 396,826 395,600 388,375 389,058 387,952 387,312 385,402 386,026 384,918 384,435 382,610 390,586 382,138 380,355 382,190 381,818 381,472 377,654 376,563 375,651 373,448 370,720 369,227 369,341   
      gain on sale of assets
    		 1,600,000  600,000          50,000,000  471,000   1,538,000  26,000          7,666,000             1,900,000 22,751,000   23,769,000          
      weighted-average number of shares used to compute net income per share:
    		                                                         
      basic
    		506,198 477,591 478,254 478,068 475,681 470,844 471,816 471,599 468,042 459,641 460,108 459,984 458,318 455,346 455,840 455,512 454,102 416,943 408,520 408,131 407,365 405,212 405,409 405,195 404,759 401,368 401,466 401,323 401,164 404,585 404,536 396,826 395,600 388,375 389,058 387,952 387,312 385,402 386,026 384,918 384,435 382,610 383,924 382,138 380,355 379,969 378,820 377,830 377,654 376,563 375,284 373,448 370,720 369,227 368,996   
      diluted
    		506,198 477,591 478,254 478,068 475,681 476,691 479,190 480,172 482,096 481,070 481,099 479,016 479,326 474,857 476,431 475,645 469,164 416,943 408,520 408,131 407,365 405,212 405,409 405,195 404,759 401,368 410,992 408,230 401,164 404,585 404,536 396,826 395,600 388,375 389,058 387,952 387,312 385,402 386,026 384,918 384,435 382,610 390,586 382,138 380,355 382,190 381,818 381,472 377,654 376,563 375,651 373,448 370,720 369,227 369,341   
      facilities insurance modifications
    		             -1,003,000 494,000 -384,000 7,136,000 -5,081,000 1,554,000 1,270,000 671,000 2,606,000 2,465,000 52,000 8,038,000 -19,080,000 12,569,000 2,278,000 -20,021,000 -14,857,000 12,334,000 1,029,000 8,449,000 514,000 -3,906,000  2,574,000 9,015,000 5,946,000                   
      impairment of long-lived assets
    		                     3,139,000   150,820,000                                 
      dividends declared per common share
    		                        0.045 0.045 0.045 0.045 0.045                             
      gain on equity method investments
    		                                -18,696,000                         
      loss on equity method investments
    		                             -13,244,000 -24,841,000 -16,100,000                          
      income tax benefit
    		                            -8,674,000    -24,348,000   23,739,000 22,177,000 -2,516,000 7,502,000 -15,544,000             22,521,000  50,481,000 11,535,000  
      depletion and depreciation
    		                             121,228,000 80,041,000 74,289,000 54,277,000 74,294,000 73,490,000 72,441,000 34,978,000 74,373,000 17,838,000 16,927,000 31,266,000 45,432,000 35,995,000 37,532,000 37,007,000 36,959,000 69,546,000 46,378,000 58,367,000 58,562,000 58,649,000 63,794,000 32,999,000 31,649,000 42,593,000 22,869,000 23,498,000 
      other incomes
    		                                3,705,000   8,434,000 762,000 3,442,000 -795,000 -170,000  1,296,000 290,000 4,266,000 628,000 329,000 26,000 1,277,000 1,864,000 849,000 632,000  44,000   84,000  
      restructuring charges
    		                                              11,804,000           
      interest income
    		                                             69,000 196,000 58,000 77,000 44,000 70,000 137,000 282,000 746,000 2,492,000 2,613,000 2,354,000 
      amortization—deferred financing costs
    		                                             2,593,000 2,559,000 2,786,000 2,786,000 2,785,000 2,698,000       
      interest expense
    		                                             9,838,000 7,635,000 3,511,000 8,781,000 10,017,000 8,991,000 20,213,000 10,446,000 13,058,000 16,581,000 18,400,000 20,258,000 
      loss on extinguishment of debt
    		                                               2,898,000         59,643,000 
      amortization - deferred financing costs
    		                                                   2,194,000 2,194,000 2,194,000 2,194,000 2,194,000  
      doubtful accounts expense
    		                                                         
      accretion to redemption value of convertible preferred units
    		                                                         
      net income attributable to common shareholders/unit holders
    		                                                   -36,250,000 -24,843,000  51,776,000 -16,686,000  
      pro forma basic
    		                                                         
      pro forma diluted
    		                                                         
      net loss attributable to common shareholders/unit holders
    		                                                     -37,541,000    
      exploration expenses, including dry holes
    		                                                      11,005,000 85,220,000 8,432,000 
      pro forma basic net income per share attributable to common shareholders
    		                                                       -0.03  
      pro forma diluted net income per share attributable to common shareholders
    		                                                       -0.03  
      pro forma weighted-average number of shares used to compute pro forma basic net income per share
    		                                                       348,820  
      pro forma weighted-average number of shares used to compute pro forma diluted net income per share
    		                                                       348,820  
      amortization - debt issue costs
    		                                                        9,611,000 
      net income attributable to common unit holders
    		                                                        -71,498,000 
    Balance Sheets:
    Quarterly
    Annual
      Unit: USD2026-03-31 2025-12-31 2025-09-30 2025-06-30 2025-03-31 2024-12-31 2024-09-30 2024-06-30 2024-03-31 2023-12-31 2023-09-30 2023-06-30 2023-03-31 2022-12-31 2022-09-30 2022-06-30 2022-03-31 2021-12-31 2021-09-30 2021-06-30 2021-03-31 2020-12-31 2020-09-30 2020-06-30 2020-03-31 2019-12-31 2019-09-30 2019-06-30 2019-03-31 2018-12-31 2018-09-30 2018-06-30 2018-03-31 2017-12-31 2017-09-30 2017-06-30 2017-03-31 2016-12-31 2016-09-30 2016-06-30 2016-03-31 2015-12-31 2015-09-30 2015-06-30 2015-03-31 2014-09-30 2014-06-30 2014-03-31 2013-09-30 2013-06-30 2013-03-31 2012-09-30 2012-06-30 2012-03-31 2011-09-30 2011-06-30 2011-03-31 
                                                               
        assets
      		                                                         
        current assets:
      		                                                         
        cash and cash equivalents
      		129,957,000 91,518,000 64,032,000 51,694,000 49,791,000 84,972,000 51,581,000 173,813,000 254,323,000 95,345,000 138,742,000 85,729,000 128,427,000 183,405,000 231,565,000 223,327,000 337,834,000 131,620,000 111,329,000 149,550,000 95,242,000 149,027,000 300,819,000 164,091,000 126,507,000 224,502,000 203,646,000 176,908,000 134,423,000 173,515,000 192,646,000 116,941,000 198,841,000 233,412,000 164,162,000 162,474,000 153,194,000 194,057,000 109,040,000 112,817,000 212,917,000 275,004,000 366,035,000 252,611,000 360,465,000 600,626,000 621,631,000 528,028,000 440,267,000 508,874,000 497,289,000 399,650,000 629,951,000 745,288,000 656,442,000 818,279,000 290,704,000 
        receivables
      		110,510,000 103,472,000 103,330,000 117,819,000 152,513,000 164,959,000 161,967,000 113,124,000 121,777,000 120,733,000                                                
        inventories
      		182,725,000 172,640,000 164,392,000 163,182,000 196,095,000 170,871,000 154,882,000 149,492,000 176,243,000 152,054,000 155,011,000 191,412,000 163,863,000 133,515,000 150,284,000 154,484,000 153,392,000 165,247,000 152,950,000 134,942,000 153,650,000 128,972,000 142,232,000 130,299,000 140,068,000 114,412,000 140,218,000 108,528,000 87,295,000 84,827,000 90,003,000 71,085,000 79,710,000 71,861,000 74,275,000 79,871,000 84,424,000 74,380,000 82,062,000 71,078,000 67,227,000 85,173,000 76,366,000 70,078,000 73,750,000 57,571,000 39,839,000 42,490,000 33,118,000 53,482,000 30,120,000 37,992,000 50,426,000 40,198,000 33,010,000 42,580,000 29,558,000 
        prepaid expenses and other
      		11,543,000 12,428,000 14,776,000 14,690,000 15,150,000 16,414,000 41,581,000 41,202,000 47,236,000 46,235,000 49,476,000 32,639,000 28,902,000 24,722,000 23,402,000 21,988,000 30,553,000 18,899,000 32,577,000 26,343,000 30,268,000 27,870,000 32,806,000 39,573,000 29,802,000 36,192,000 47,315,000 41,496,000 58,404,000 68,040,000 58,949,000 33,638,000 31,311,000 9,306,000 9,359,000 7,491,000 6,857,000 7,209,000 9,602,000 5,781,000 11,092,000 24,766,000 32,736,000 19,024,000 29,677,000 20,086,000 51,706,000 37,494,000 11,596,000 14,409,000 10,768,000 9,801,000 15,257,000 14,126,000 15,733,000 22,023,000 14,024,000 
        derivatives
      		 47,816,000 19,037,000 15,995,000 3,590,000 8,916,000 11,077,000  22,000 8,346,000  11,270,000 12,121,000 7,344,000 11,879,000   5,689,000    15,414,000 30,499,000 30,289,000 112,028,000 12,856,000 22,067,000 11,511,000 17,289,000 38,785,000 41,466,000 18,053,000 3,461,000 1,682,000 16,200,000 37,041,000 34,899,000 31,698,000 68,434,000 96,723,000 155,796,000 182,640,000 164,172,000 110,674,000 163,869,000 6,848,000 21,380,000 510,000 917,000 1,254,000 3,204,000 3,185,000 1,512,000 24,326,000  770,000 1,455,000 
        assets held for sale
      		18,707,000                                                         
        total current assets
      		453,442,000 427,874,000 365,567,000 363,380,000 417,139,000 446,132,000 421,088,000 477,631,000 602,886,000 422,713,000 461,796,000 419,548,000 443,318,000 468,721,000 547,789,000 690,283,000 794,189,000 541,952,000 415,921,000 443,466,000 420,227,000 400,291,000 592,466,000 480,999,000 614,515,000 566,557,000 550,028,000 499,714,000 484,127,000 509,700,000 640,779,000 417,911,000 448,875,000 533,602,000 469,149,000 513,475,000 545,791,000 475,187,000 386,601,000 453,174,000 570,459,000 734,148,000 817,402,000 636,469,000 831,437,000 846,361,000 905,549,000 760,089,000 709,443,000 652,412,000 726,909,000 742,071,000 938,708,000 1,006,278,000 1,096,983,000 1,287,311,000 670,393,000 
        property and equipment
      		3,367,489,000 3,733,784,000 4,208,535,000 4,357,812,000 4,413,056,000 4,444,221,000 4,694,435,000 4,558,313,000 4,389,404,000 4,160,229,000 4,179,969,000 4,077,821,000 3,966,178,000 3,842,647,000 4,138,667,000 4,032,327,000 4,030,816,000 4,183,987,000 3,442,897,000 3,374,643,000 3,369,448,000 3,320,913,000 3,366,304,000 3,378,665,000 3,442,937,000 3,642,332,000 3,799,036,000 3,847,573,000 3,914,803,000 3,459,701,000 3,509,537,000 2,263,064,000 2,306,537,000 2,317,828,000 2,258,401,000 2,297,425,000 2,344,833,000 2,708,892,000 2,758,218,000 2,686,129,000 2,536,252,000 2,322,839,000 2,120,541,000 1,960,681,000 1,821,154,000 1,653,601,000 1,564,404,000 1,544,821,000 1,501,714,000 1,481,964,000 1,542,313,000 1,490,400,000 1,459,912,000     
        other assets:
      		                                                         
        restricted cash
      		30,630,000 26,226,000 14,032,000 305,000 305,000 305,000 305,000 305,000 3,285,000 3,416,000 3,416,000 3,416,000 3,416,000  27,000 27,000 59,140,000 42,971,000 43,208,000 43,208,000 48,660,000 195,000 827,000 186,000 3,708,000 4,302,000 7,745,000 327,000 537,000 4,527,000 5,376,000 20,377,000 35,378,000 56,380,000 55,852,000 40,776,000 65,835,000 24,506,000 25,588,000 27,428,000 28,557,000 28,533,000 36,770,000 31,500,000 15,985,000 34,621,000 19,552,000 20,135,000 19,377,000 19,376,000 20,455,000 21,336,000 22,954,000 23,675,000 22,949,000 26,214,000  
        long-term receivables
      		465,649,000 458,793,000 451,540,000 444,749,000 395,571,000 385,463,000 333,493,000 328,533,000 331,507,000 325,181,000 297,327,000 278,744,000 256,249,000 235,696,000 201,196,000 180,180,000 168,990,000 191,150,000 271,295,000 160,017,000 142,220,000 117,497,000 101,118,000 88,137,000 68,472,000 43,430,000 36,957,000 28,140,000                              
        deferred tax assets
      		2,783,000 3,946,000 4,024,000 4,008,000 4,079,000 4,717,000 4,720,000 4,757,000 4,808,000 3,033,000 2,664,000               32,779,000 37,838,000 43,710,000 33,144,000 14,004,000 31,890,000 20,763,000 22,240,000          12,319,000 8,160,000 34,462,000             
        non-current assets held for sale
      		408,895,000                                                         
        other
      		54,554,000 43,322,000 43,018,000 39,079,000 39,264,000 27,638,000 16,905,000 19,771,000 21,221,000 21,968,000 17,016,000 16,853,000 15,899,000 23,401,000 22,385,000 20,952,000 10,069,000 6,614,000 17,970,000 7,447,000 15,866,000 8,320,000 19,633,000 26,797,000 54,866,000 28,727,000 20,016,000 21,899,000 27,991,000 21,690,000 15,750,000 13,501,000 20,752,000 25,616,000 15,756,000 59,856,000 41,585,000 25,893,000 39,833,000 25,246,000 29,193,000 34,882,000 32,520,000 30,515,000 53,446,000 20,344,000 7,646,000 5,783,000 4,995,000 9,710,000 2,813,000 1,560,000 22,529,000 2,700,000 4,734,000 1,172,000 66,000 
        total assets
      		4,783,442,000 4,696,626,000 5,089,741,000 5,213,006,000 5,269,414,000 5,308,988,000 5,470,946,000 5,389,310,000 5,350,131,000 4,938,134,000 4,969,401,000 4,807,619,000 4,698,145,000 4,579,988,000 4,921,412,000 4,931,190,000 5,021,361,000 4,940,651,000 4,153,724,000 4,003,272,000 3,959,086,000 3,867,593,000 4,093,501,000 3,986,491,000 4,183,962,000 4,317,232,000 4,468,259,000 4,465,734,000 4,501,856,000 4,088,189,000 4,329,464,000 2,903,443,000 3,030,528,000 3,192,603,000 2,970,448,000 3,076,359,000 3,183,049,000 3,341,465,000 3,301,817,000 3,293,262,000 3,234,819,000 3,203,050,000 3,105,045,000 2,741,263,000 2,821,892,000 2,603,207,000 2,578,056,000 2,413,361,000 2,295,079,000 2,225,730,000 2,358,678,000 2,319,160,000 2,461,653,000 2,465,034,000 2,290,827,000 2,414,048,000 1,837,311,000 
        liabilities and stockholders’ equity
      		                                                         
        current liabilities:
      		                                                         
        accounts payable
      		194,969,000 202,555,000 200,809,000 312,928,000 332,696,000 349,994,000 284,954,000 345,258,000 372,449,000 248,912,000 199,031,000 263,753,000 273,195,000 212,275,000 272,767,000 286,730,000 224,594,000 184,403,000 143,155,000 272,588,000 188,704,000 221,430,000 184,086,000 145,670,000 228,492,000 149,483,000 171,495,000 157,373,000 174,073,000 176,540,000 153,922,000 128,471,000 138,233,000 141,787,000 100,302,000 89,147,000 217,722,000 220,627,000 173,972,000 215,755,000 237,188,000 295,689,000 259,336,000 149,719,000 126,114,000 89,838,000 88,728,000 103,563,000 98,818,000 63,955,000 48,785,000 128,231,000 194,808,000 201,292,000 197,224,000 115,767,000 108,169,000 
        accrued liabilities
      		332,078,000 237,609,000 251,310,000 240,585,000 214,619,000 244,954,000 277,752,000 302,903,000 278,891,000 302,815,000 338,790,000 243,880,000 319,801,000 325,206,000 252,196,000 352,055,000 330,492,000 250,670,000 180,725,000 222,946,000 174,147,000 203,260,000 186,630,000 203,275,000 267,758,000 380,704,000 292,419,000 258,379,000 187,941,000 195,596,000 262,310,000 145,600,000 136,260,000 219,412,000 173,804,000 190,261,000 118,114,000 129,706,000 100,430,000 141,267,000 142,104,000 159,897,000 130,195,000 110,006,000 141,672,000 197,132,000 216,830,000 150,524,000 115,866,000 71,812,000 58,340,000 64,693,000 31,346,000 39,556,000 41,409,000 25,597,000 41,897,000 
        current maturities of long-term debt
      		30,220,000 132,143,000 250,000,000 250,000,000        15,000,000 30,000,000 30,000,000 30,000,000 30,000,000 130,000,000 30,000,000 30,000,000 22,500,000 35,000,000 7,500,000 169,905,000 56,000,000                                  
        liabilities held for sale
      		43,544,000                                                         
        total current liabilities
      		757,054,000 572,307,000 705,358,000 809,283,000 547,315,000 594,948,000 563,233,000 654,871,000 665,413,000 554,830,000 564,418,000 523,730,000 624,513,000 574,254,000 592,440,000 865,957,000 933,107,000 530,952,000 461,743,000 645,289,000 481,144,000 460,199,000 565,210,000 448,919,000 515,837,000 539,101,000 472,375,000 442,649,000 413,727,000 384,308,000 628,449,000 436,400,000 358,508,000 428,730,000 283,122,000 282,340,000 344,752,000 370,025,000 282,457,000 363,332,000 380,765,000 456,741,000 455,352,000 303,965,000 331,970,000 288,964,000 326,938,000 262,194,000 224,142,000 142,767,000 125,129,000 217,646,000 248,064,000 265,174,000 268,656,000 177,229,000 177,847,000 
        long-term liabilities:
      		                                                         
        long-term debt
      		2,866,043,000 2,920,616,000 2,728,500,000 2,600,553,000 2,847,621,000 2,744,712,000 2,691,912,000 2,595,296,000 2,655,052,000 2,390,914,000 2,389,197,000 2,358,689,000 2,191,054,000 2,195,911,000 2,275,769,000 2,280,625,000 2,385,629,000 2,590,495,000 2,368,240,000 2,223,912,000 2,271,112,000 2,103,931,000 2,191,433,000 2,107,653,000 2,059,929,000 2,008,063,000 2,106,202,000 2,129,340,000 2,195,826,000 2,120,547,000 2,094,534,000 1,167,775,000 1,265,196,000 1,282,797,000 1,080,352,000 1,127,503,000 1,174,677,000 1,321,874,000 1,319,094,000 1,191,334,000 1,013,596,000 860,878,000 899,355,000 798,543,000 794,434,000 794,106,000 800,000,000 800,000,000 900,000,000 900,000,000 1,000,000,000 1,000,000,000 1,110,000,000 1,110,000,000 1,000,000,000 1,300,000,000 1,300,000,000 
        asset retirement obligations
      		196,297,000 327,016,000 399,719,000 425,116,000 415,896,000 406,886,000 390,915,000 371,075,000 358,118,000 343,979,000 330,102,000 310,542,000 301,659,000 300,800,000 275,867,000 270,176,000 321,419,000 322,237,000 265,409,000 257,164,000 252,208,000 244,166,000 247,564,000 239,845,000 235,138,000 230,526,000 284,526,000 276,692,000 268,535,000 145,336,000 150,200,000 70,122,000 68,325,000 66,595,000 68,713,000 66,935,000 65,223,000 63,574,000 61,163,000 46,339,000 45,122,000 43,938,000 50,368,000 47,854,000 46,604,000 42,861,000 41,731,000 40,643,000 35,226,000 32,602,000 29,957,000 22,662,000 21,992,000 21,349,000 19,622,000 19,042,000 17,258,000 
        deferred tax liabilities
      		134,750,000 305,924,000 313,426,000 314,359,000 314,607,000 313,433,000 376,885,000 370,840,000 358,377,000 363,918,000 433,628,000 459,417,000 460,414,000 468,445,000 629,755,000 582,973,000 580,613,000 711,038,000 505,253,000 504,135,000 551,540,000 573,619,000 624,156,000 644,091,000 692,618,000 653,221,000 678,808,000 697,792,000 704,122,000 477,179,000 401,826,000 392,918,000 451,574,000 476,548,000 511,891,000 517,970,000 506,122,000 482,221,000 483,740,000 478,003,000 497,895,000                 
        long-term liabilities held for sale
      		260,601,000                                                         
        other long-term liabilities
      		38,673,000 42,173,000 43,673,000 45,285,000 45,795,000 48,585,000 250,346,000 255,337,000 241,536,000 252,156,000 249,985,000 251,199,000 251,065,000 251,952,000 251,943,000 254,335,000 248,222,000 250,394,000 244,779,000 46,151,000 36,053,000 37,455,000 33,291,000 33,157,000 32,253,000 33,141,000 32,619,000 29,274,000 29,747,000 9,160,000 9,277,000 8,364,000 8,394,000 10,612,000 9,871,000 15,440,000 25,664,000 8,449,000 9,689,000 9,272,000 8,942,000 9,595,000 9,474,000 9,565,000 9,648,000 14,539,000 17,689,000 16,093,000 18,886,000 18,492,000 18,725,000 12,507,000 10,795,000 8,154,000 15,661,000 2,037,000  
        total long-term liabilities
      		3,511,279,000 3,595,729,000 3,485,596,000 3,385,939,000 3,623,919,000 3,513,616,000 3,710,813,000 3,592,548,000 3,613,083,000 3,350,967,000 3,405,314,000 3,379,985,000 3,204,192,000 3,217,886,000 3,435,481,000 3,402,867,000 3,551,933,000 3,880,462,000 3,405,229,000 3,050,741,000 3,121,157,000 2,967,240,000 3,102,727,000 3,083,385,000 3,022,977,000 2,936,429,000 3,104,854,000 3,138,874,000 3,211,536,000 2,762,403,000 2,766,082,000 1,722,912,000 1,828,616,000 1,866,761,000 1,678,083,000 1,731,166,000 1,776,985,000 1,890,241,000 1,891,114,000 1,751,234,000 1,577,932,000 1,420,796,000 1,360,741,000 1,222,105,000 1,204,972,000 1,123,311,000 1,098,160,000 1,066,440,000 1,100,640,000 1,081,537,000 1,166,052,000 1,129,290,000 1,224,346,000 1,195,171,000 1,057,470,000 1,345,231,000 1,348,126,000 
        stockholders’ equity:
      		                                                         
        preference shares, 0.01 par value...
      		                                                         
        common stock, 0.01 par value...
      		6,374,000 5,226,000 5,225,000 5,225,000 5,222,000 5,162,000 5,161,000 5,160,000 5,158,000 5,044,000 5,044,000 5,043,000 5,039,000 5,002,000 5,001,000 5,000,000 4,995,000 4,962,000 4,530,000 4,527,000 4,521,000 4,497,000 4,497,000 4,496,000 4,494,000 4,458,000 4,458,000 4,456,000 4,455,000 4,429,000                            
        additional paid-in capital
      		2,753,572,000 2,542,627,000 2,535,684,000 2,530,382,000 2,523,041,000 2,514,739,000 2,504,637,000 2,494,603,000 2,484,119,000 2,536,621,000 2,525,634,000 2,515,055,000 2,503,940,000 2,505,694,000 2,497,062,000 2,488,192,000 2,479,325,000 2,473,674,000 2,330,337,000 2,322,233,000 2,314,595,000 2,307,220,000 2,300,586,000 2,291,826,000 2,283,398,000 2,297,221,000 2,310,776,000 2,320,024,000 2,329,244,000 2,341,249,000 2,331,969,000 2,015,463,000 2,011,489,000 2,014,525,000 2,004,578,000 1,994,785,000 1,984,710,000 1,975,247,000 1,965,596,000 1,956,287,000 1,943,280,000 1,933,189,000 1,920,589,000 1,906,718,000 1,885,326,000 1,840,615,000 1,821,468,000 1,799,435,000 1,763,227,000 1,749,461,000 1,731,819,000 1,687,669,000 1,668,302,000 1,650,740,000 1,607,754,000 1,587,611,000  
        accumulated deficit
      		-2,007,830,000 -1,782,256,000 -1,405,115,000 -1,280,816,000 -1,193,076,000 -1,082,470,000 -1,075,891,000 -1,120,865,000 -1,180,635,000 -1,272,321,000 -1,294,002,000 -1,379,187,000 -1,402,532,000 -1,485,841,000 -1,371,565,000 -1,593,819,000 -1,710,992,000 -1,712,392,000 -1,811,108,000 -1,782,511,000 -1,725,324,000 -1,634,556,000 -1,642,512,000 -1,605,128,000 -1,405,737,000 -1,222,970,000 -1,187,197,000 -1,203,262,000 -1,220,099,000 -1,167,193,000 -1,352,758,000 -1,226,701,000 -1,123,428,000 -1,073,202,000 -951,123,000 -887,718,000 -879,251,000 -850,410,000 -793,710,000 -733,947,000 -623,679,000 -564,686,000 -588,686,000               
        treasury stock
      		-237,007,000 -237,007,000 -237,007,000 -237,007,000 -237,007,000 -237,007,000 -237,007,000 -237,007,000 -237,007,000 -237,007,000 -237,007,000 -237,007,000 -237,007,000 -237,007,000 -237,007,000 -237,007,000 -237,007,000 -237,007,000 -237,007,000 -237,007,000 -237,007,000 -237,007,000 -237,007,000 -237,007,000 -237,007,000 -237,007,000 -237,007,000 -237,007,000 -237,007,000 -237,007,000 -48,707,000 -48,707,000 -48,707,000 -48,197,000 -48,197,000 -48,197,000 -48,115,000 -47,597,000 -47,597,000 -47,597,000 -47,421,000 -46,929,000 -46,890,000               
        total stockholders’ equity
      		515,109,000 528,590,000 898,787,000 1,017,784,000 1,098,180,000 1,200,424,000 1,196,900,000 1,141,891,000 1,071,635,000 1,032,337,000 999,669,000 903,904,000 869,440,000 787,848,000 893,491,000 662,366,000 536,321,000 529,237,000 286,752,000 307,242,000 356,785,000 440,154,000 425,564,000 454,187,000 645,148,000 841,702,000 891,030,000 884,211,000 876,593,000                             
        total liabilities and stockholders’ equity
      		4,783,442,000 4,696,626,000 5,089,741,000 5,213,006,000 5,269,414,000 5,308,988,000 5,470,946,000 5,389,310,000 5,350,131,000 4,938,134,000 4,969,401,000 4,807,619,000 4,698,145,000 4,579,988,000 4,921,412,000 4,931,190,000 5,021,361,000 4,940,651,000 4,153,724,000 4,003,272,000 3,959,086,000 3,867,593,000 4,093,501,000 3,986,491,000 4,183,962,000 4,317,232,000 4,468,259,000 4,465,734,000 4,501,856,000                             
        joint interest billings
      		          29,851,000 34,234,000 36,151,000 28,851,000 40,643,000 38,788,000 31,023,000 36,908,000 26,147,000 25,085,000 25,305,000 26,002,000 36,423,000 56,267,000 116,610,000 81,424,000 54,409,000 55,360,000 54,580,000 64,572,000 84,209,000 68,006,000 76,642,000 134,565,000 75,373,000 56,606,000 87,324,000 63,249,000 52,042,000 68,595,000 65,677,000 67,200,000 96,484,000 54,569,000 49,870,000 54,027,000 33,324,000 102,843,000 71,591,000 36,032,000 27,747,000 113,946,000 139,798,000 126,506,000 89,614,000 175,044,000 120,621,000 
        oil sales
      		          71,700,000 47,411,000 57,955,000 67,483,000 67,604,000 230,717,000 172,178,000 134,004,000 31,740,000 56,891,000 51,236,000 44,491,000 29,227,000 33,497,000 30,926,000 64,142,000 54,612,000 83,685,000 103,597,000 48,164,000 131,546,000 73,700,000   51,726,000 43,152,000 49,696,000 54,195,000  45,506,000  35,950,000  59,338,000 49,913,000 41,764,000 115,987,000  113,067,000  106,707,000 106,561,000   114,933,000   
        property and equipment:
      		                                                         
        oil and gas properties
      		          4,174,239,000 4,073,399,000 3,961,074,000 3,837,437,000 4,132,962,000 4,025,752,000 4,024,214,000 4,177,323,000 3,435,384,000 3,366,800,000 3,359,670,000 3,310,276,000 3,354,484,000 3,365,746,000 3,428,555,000 3,624,751,000 3,780,989,000 3,832,525,000 3,900,584,000 3,444,864,000 3,498,855,000 2,253,815,000 2,297,246,000 2,310,973,000 2,251,977,000 2,290,338,000 2,337,572,000 2,700,889,000 2,750,203,000 2,677,562,000 2,528,527,000 2,314,226,000 2,111,367,000 1,950,873,000 1,810,421,000 1,641,393,000 1,551,427,000 1,530,666,000 1,486,224,000 1,465,723,000 1,527,267,000       
        other property
      		          5,730,000 4,422,000 5,104,000 5,210,000 5,705,000 6,575,000 6,602,000 6,664,000 7,513,000 7,843,000 9,778,000 10,637,000 11,820,000 12,919,000 14,382,000 17,581,000 18,047,000 15,048,000 14,219,000 14,837,000 10,682,000 9,249,000 9,291,000 6,855,000 6,424,000 7,087,000 7,261,000 8,003,000 8,015,000 8,567,000 7,725,000 8,613,000 9,174,000 9,808,000 10,733,000 12,208,000 12,977,000 14,155,000 15,490,000 16,241,000 15,046,000       
        deferred financing costs, net of accumulated amortization of 15,003 and 13,263 at september 30, 2023 and december 31, 2022, respectively
      		          2,900,000                                               
        receivables:
      		                                                         
        deferred financing costs, net of accumulated amortization of 14,423 and 13,263 at june 30, 2023 and december 31, 2022, respectively
      		           3,480,000                                              
        deferred financing costs, net of accumulated amortization of 13,843 and 13,263 at march 31, 2023 and december 31, 2022, respectively
      		            4,060,000                                             
        deferred financing costs, net of accumulated amortization of 13,263 and 19,912 at december 31, 2022 and december 31, 2021, respectively
      		             4,640,000                                            
        deferred financing costs, net of accumulated amortization of 12,683 and 19,912 at september 30, 2022 and december 31, 2021, respectively
      		              5,220,000                                           
        deferred financing costs, net of accumulated amortization of 12,103 and 19,912 at june 30, 2022 and december 31, 2021, respectively
      		               5,800,000                                          
        deferred financing costs, net of accumulated amortization of 11,523 and 19,912 at march 31, 2022 and december 31, 2021, respectively
      		                6,188,000                                         
        deferred financing costs, net of accumulated amortization of 19,912 and 17,296 at december 31, 2021 and december 31, 2020, respectively
      		                 1,090,000                                        
        deferred financing costs, net of accumulated amortization of 19,258 and 17,296 at september 30, 2021 and december 31, 2020, respectively
      		                  1,744,000                                       
        deferred financing costs, net of accumulated amortization of 18,604 and 17,296 at june 30, 2021 and december 31, 2020, respectively
      		                   2,398,000                                      
        deferred financing costs, net of accumulated amortization of 17,951 and 17,296 at march 31, 2021 and december 31, 2020, respectively
      		                    3,051,000                                     
        deferred financing costs, net of accumulated amortization of 17,296 and 14,681 at december 31, 2020 and december 31, 2019, respectively
      		                     3,706,000                                    
        deferred financing costs, net of accumulated amortization of 16,643 and 14,681 at september 30, 2020 and december 31, 2019, respectively
      		                      4,359,000                                   
        deferred financing costs, net of accumulated amortization of 15,989 and 14,681 at june 30, 2020 and december 31, 2019, respectively
      		                       5,013,000                                  
        production prepayment agreement
      		                       49,333,000                                  
        deferred financing costs, net of accumulated amortization of 15,335 and 14,681 at march 31, 2020 and december 31, 2019, respectively
      		                        5,667,000                                 
        related party
      		                            11,000 5,580,000 20,834,000 2,610,000 2,780,000 780,000 6,446,000 26,208,000 21,977,000                     
        equity method investment
      		                             51,896,000 88,652,000 151,310,000 190,211,000 236,514,000 122,664,000 127,467,000 133,893,000                     
        deferred financing costs, net of accumulated amortization of 14,681 and 12,065 at december 31, 2019 and december 31, 2018, respectively
      		                         6,321,000                                
        deferred financing costs, net of accumulated amortization of 14,027 and 12,065 at september 30, 2019 and december 31, 2018, respectively
      		                          6,975,000                               
        deferred financing costs, net of accumulated amortization of 13,373 and 12,065 at june 30, 2019 and december 31, 2018, respectively
      		                           7,629,000                              
        long-term receivables - joint interest billings
      		                            20,670,000 19,002,000 21,861,000 28,981,000 28,001,000 34,941,000 47,525,000 45,671,000 47,306,000 45,663,000 45,998,000 42,572,000 38,513,000 37,687,000 31,343,000               
        deferred financing costs, net of accumulated amortization of 12,719 and 12,065 at march 31, 2019 and december 31, 2018, respectively
      		                            8,283,000                             
        deferred financing costs, net of accumulated amortization of 12,065 and 13,951 at december 31, 2018 and december 31, 2017, respectively
      		                             8,937,000                            
        liabilities and shareholders’ equity
      		                                                         
        shareholders’ equity:
      		                                                         
        total shareholders’ equity
      		                             941,478,000 934,933,000 744,131,000 843,404,000 897,112,000 1,009,243,000 1,062,853,000 1,061,312,000 1,081,199,000 1,128,246,000 1,178,696,000 1,276,122,000 1,325,513,000 1,288,952,000 1,215,193,000 1,284,950,000 1,190,932,000 1,152,958,000 1,084,000 970,297,000 1,001,426,000 1,067,497,000 972,224,000 989,243,000 1,004,689,000    
        total liabilities and shareholders’ equity
      		                             4,088,189,000 4,329,464,000 2,903,443,000 3,030,528,000 3,192,603,000 2,970,448,000 3,076,359,000 3,183,049,000 3,341,465,000 3,301,817,000 3,293,262,000 3,234,819,000 3,203,050,000 3,105,045,000 2,741,263,000 2,821,892,000 2,603,207,000 2,578,056,000 2,413,361,000 2,295,079,000 2,225,730,000 2,358,678,000 2,319,160,000 2,461,653,000 2,465,034,000    
        deferred financing costs, net of accumulated amortization of 11,411 and 13,951 at september 30, 2018 and december 31, 2017, respectively
      		                              9,582,000                           
        common shares, 0.01 par value...
      		                              4,429,000 4,076,000 4,050,000 3,986,000 3,985,000 3,983,000 3,968,000 3,959,000 3,957,000 3,953,000 3,942,000 3,939,000 3,939,000 3,937,000 3,931,000 3,924,000 3,923,000 3,920,000 3,920,000 3,919,000 3,914,000 3,914,000 3,914,000 3,908,000 3,902,000 3,901,000  
        deferred financing costs, net of accumulated amortization of 15,320 and 13,951 at june 30, 2018 and december 31, 2017, respectively
      		                               1,141,000                          
        deferred financing costs, net of accumulated amortization of 14,636 and 13,951 at march 31, 2018 and december 31, 2017, respectively
      		                                1,825,000                         
        deferred financing costs, net of accumulated amortization of 13,951 and 11,213 at december 31, 2017 and december 31, 2016, respectively
      		                                 2,510,000                        
        long-term deferred tax assets
      		                                 22,517,000 34,546,000 32,427,000 39,594,000 37,827,000 32,605,000 29,976,000 30,866,000 33,209,000 14,773,000 12,515,000 11,237,000 21,767,000 20,161,000 17,985,000 14,808,000 13,653,000 12,088,000 8,750,000 7,520,000 6,883,000 2,297,000   
        deferred financing costs, net of accumulated amortization of 13,267 and 11,213 at september 30, 2017 and december 31, 2016, respectively
      		                                  3,194,000                       
        deferred financing costs, net of accumulated amortization of 12,582 and 11,213 at june 30, 2017 and december 31, 2016, respectively
      		                                   3,879,000                      
        deferred financing costs, net of accumulated amortization of 11,898 and 11,213 at march 31, 2017 and december 31, 2016, respectively
      		                                    4,563,000                     
        deferred financing costs, net of accumulated amortization of 11,213 and 8,475 at december 31, 2016 and december 31, 2015, respectively
      		                                     5,248,000                    
        deferred financing costs, net of accumulated amortization of 10,528 and 8,475 at september 30, 2016 and december 31, 2015, respectively
      		                                      5,933,000                   
        deferred financing costs, net of accumulated amortization of 9,844 and 8,475 at june 30, 2016 and december 31, 2015, respectively
      		                                       6,617,000                  
        deferred financing costs, net of accumulated amortization of 9,159 and 8,475 at march 31, 2016 and december 31, 2015, respectively
      		                                        7,302,000                 
        deferred financing costs, net of accumulated amortization of 8,475 and 6,404 at december 31, 2015 and december 31, 2014, respectively
      		                                         7,986,000                
        accumulated other comprehensive income
      		                                           378,000 573,000 1,057,000 1,347,000 1,752,000 2,563,000 2,968,000 3,326,000 3,817,000 3,950,000 3,736,000 3,522,000 2,329,000 2,046,000 
        deferred financing costs, net of accumulated amortization of 40,341 and 33,389 at september 30, 2015 and december 31, 2014, respectively
      		                                          49,864,000               
        deferred tax liability
      		                                          64,435,000 43,316,000 63,211,000 271,376,000 224,767,000 205,509,000 145,193,000 129,241,000 113,585,000 88,027,000 76,618,000 47,751,000 12,513,000 12,513,000 12,513,000 
        long-term receivables – joint interest billings
      		                                           24,922,000 18,321,000 10,124,000            
        deferred financing costs, net of accumulated amortization of 37,788 and 33,389 at june 30, 2015 and december 31, 2014, respectively
      		                                           52,300,000              
        deferred financing costs, net of accumulated amortization of 35,999 and 33,389 at march 31, 2015 and december 31, 2014, respectively
      		                                            46,143,000             
        current deferred tax assets
      		                                             10,474,000 15,864,000 22,806,000 14,515,000 9,275,000 27,806,000 48,040,000 56,281,000 53,785,000 50,127,000 91,891,000 103,257,000 
        deferred financing costs, net of accumulated amortization of 30,778 and 24,976 at september 30, 2014 and december 31, 2013, respectively
      		                                             51,337,000            
        deferred financing costs, net of accumulated amortization of 28,186 and 24,976 at june 30, 2014 and december 31, 2013, respectively
      		                                              52,692,000           
        deferred financing costs, net of accumulated amortization of 25,626 and 24,976 at march 31, 2014 and december 31, 2013, respectively
      		                                               55,216,000          
        deferred financing costs, net of accumulated amortization of 22,191 and 13,922 at september 30, 2013 and december 31, 2012, respectively
      		                                                42,897,000         
        deferred financing costs, net of accumulated amortization of 19,405 and 13,922 at june 30, 2013 and december 31, 2012, respectively
      		                                                 45,682,000        
        deferred financing costs, net of accumulated amortization of 16,619 and 13,922, respectively
      		                                                  47,484,000       
        oil and gas properties, net of accumulated depletion of 262,698 and 135,622, respectively
      		                                                   1,474,696,000      
        other property, net of accumulated depreciation of 10,614 and 8,068, respectively
      		                                                   15,704,000      
        deferred financing costs, net of accumulated amortization of 13,164 and 6,582, respectively
      		                                                   48,639,000      
        oil and gas properties, net of accumulated depletion of 213,040 and 135,622, respectively
      		                                                    1,444,350,000     
        other property, net of accumulated depreciation of 10,021 and 8,068, respectively
      		                                                    15,562,000     
        deferred financing costs and other assets, net of accumulated amortization of 10,970 and 6,582, respectively
      		                                                    51,713,000     
        oil and gas properties, net of accumulated depletion of 174,315 and 135,622, respectively
      		                                                     1,381,471,000    
        other property, net of accumulated depreciation of 8,953 and 8,068, respectively
      		                                                     12,350,000    
        property and equipment - net
      		                                                     1,393,821,000 1,131,006,000 1,065,232,000 1,082,275,000 
        deferred financing costs and other assets, net of accumulated amortization of 8,776 and 6,582, respectively
      		                                                     54,252,000    
        notes
      		                                                      109,441,000 110,108,000 112,163,000 
        oil and gas properties, net of accumulated depletion of 90,872 and 6,430, respectively
      		                                                      1,122,904,000   
        other property, net of accumulated depreciation of 7,300 and 5,343, respectively
      		                                                      8,102,000   
        long-term receivables - joint interest billings, net of allowance
      		                                                        21,897,000 
        deferred financing costs and other assets, net of accumulated amortization of 4,388 and 32,093, respectively
      		                                                      57,041,000   
        liabilities and shareholders’ equity/unit holdings equity
      		                                                         
        convertible preferred units, 100,000,000 units authorized:
      		                                                         
        series a – zero and 30,000,000 units issued at september 30, 2011 and december 31, 2010, respectively
      		                                                         
        series b – zero and 20,000,000 units issued at september 30, 2011 and december 31, 2010, respectively
      		                                                         
        series c – zero and 884,956 units issued at september 30, 2011 and december 31, 2010, respectively
      		                                                         
        shareholders’ equity/unit holdings equity:
      		                                                         
        common units, 100,000,000 units authorized; zero and 19,069,662 issued at september 30, 2011 and december 31, 2010, respectively
      		                                                         
        total shareholders’ equity/unit holdings equity
      		                                                      964,701,000 891,588,000  
        total liabilities, convertible preferred units and shareholders’ equity/unit holdings equity
      		                                                      2,290,827,000 2,414,048,000  
        oil and gas properties, net of accumulated depletion of 56,594 and 6,430, respectively
      		                                                       1,057,495,000  
        other property, net of accumulated depreciation of 6,584 and 5,343, respectively
      		                                                       7,737,000  
        deferred financing costs and other assets, net of accumulated amortization of 2,194 and 32,093, respectively
      		                                                       59,235,000  
        series a – zero and 30,000,000 units issued at june 30, 2011 and december 31, 2010, respectively
      		                                                         
        series b – zero and 20,000,000 units issued at june 30, 2011 and december 31, 2010, respectively
      		                                                         
        series c – zero and 884,956 units issued at june 30, 2011 and december 31, 2010, respectively
      		                                                         
        common units, 100,000,000 units authorized; zero and 19,069,662 issued at june 30, 2011 and december 31, 2010, respectively
      		                                                         
        oil and gas properties, net of accumulated depletion of 28,119 and 6,430, respectively
      		                                                        1,074,328,000 
        other property, net of accumulated depreciation of 5,954 and 5,343, respectively
      		                                                        7,947,000 
        debt issue costs and other assets, net of accumulated amortization of zero and 32,093, respectively
      		                                                        61,291,000 
        liabilities and unit holdings
      		                                                         
        leasehold improvement allowance
      		                                                        926,000 
        series a - 30,000,000 units issued at march 31, 2011 and december 31, 2010
      		                                                        389,827,000 
        series b - 20,000,000 units issued at march 31, 2011 and december 31, 2010
      		                                                        577,962,000 
        series c - 884,956 units issued at march 31, 2011 and december 31,2010
      		                                                        27,564,000 
        unit holdings:
      		                                                         
        common units, 100,000,000 units authorized; 19,090,162 and 19,069,662 issued at march 31, 2011 and decemeber 31, 2010
      		                                                        516,000 
        total unit holdings
      		                                                         
        total liabilities, convertible preferred units and unit holdings
      		                                                        1,837,311,000 
        revenues and other income:
      		                                                         
        oil and gas revenue
      		                                                        92,569,000 
        interest income
      		                                                        2,354,000 
        other income
      		                                                        487,000 
        total revenues and other income
      		                                                        95,410,000 
        costs and expenses:
      		                                                         
        oil and gas production
      		                                                        19,995,000 
        exploration expenses, including dry holes
      		                                                        8,432,000 
        general and administrative
      		                                                        13,287,000 
        depletion and depreciation
      		                                                        23,498,000 
        amortization - debt issue costs
      		                                                        9,611,000 
        interest expense
      		                                                        20,258,000 
        loss on extinguishment of debt
      		                                                        59,643,000 
        other incomes
      		                                                         
        total costs and expenses
      		                                                        163,572,000 
        income before income taxes
      		                                                         
        income tax benefit
      		                                                         
        net income
      		                                                         
        accretion to redemption value of convertible preferred units
      		                                                         
        net income attributable to common unit holders
      		                                                        -71,498,000 
      Cashflow Statements:
      Quarterly
      Annual
        Unit: USD2026-03-31 2025-12-31 2025-09-30 2025-06-30 2025-03-31 2024-12-31 2024-09-30 2024-06-30 2024-03-31 2023-12-31 2023-09-30 2023-06-30 2023-03-31 2022-12-31 2022-09-30 2022-06-30 2022-03-31 2021-12-31 2021-09-30 2021-06-30 2021-03-31 2020-12-31 2020-09-30 2020-06-30 2020-03-31 2019-12-31 2019-09-30 2019-06-30 2019-03-31 2018-12-31 2018-09-30 2018-06-30 2018-03-31 2017-12-31 2017-09-30 2017-06-30 2017-03-31 2016-12-31 2016-09-30 2016-06-30 2016-03-31 2015-12-31 2015-09-30 2015-06-30 2015-03-31 2014-09-30 2014-06-30 2014-03-31 2013-09-30 2013-06-30 2013-03-31 2012-09-30 2012-06-30 2012-03-31 2011-09-30 2011-06-30 2011-03-31 
                                                                 
          operating activities
        		                                                         
          net loss
        		-225,574,000                 98,716,000 -28,597,000 -57,187,000 -90,768,000 7,956,000 -37,384,000 -199,391,000 -182,767,000 -35,773,000 16,065,000 16,837,000 -52,906,000 185,565,000 -126,057,000          -58,993,000                 
          adjustments to reconcile net loss to net cash from operating activities:
        		                                                         
          depletion, depreciation and amortization
        		122,465,000 145,549,000 143,403,000 153,157,000 122,551,000 146,919,000 122,887,000 92,350,000 103,327,000 115,671,000 134,809,000 92,443,000 111,925,000 113,858,000 108,890,000 124,270,000 161,639,000 177,397,000 67,511,000 153,781,000 79,112,000 162,089,000 113,486,000 124,049,000 95,585,000 149,958,000 148,938,000 153,740,000 120,482,000 123,538,000 82,387,000 76,572,000 56,717,000 76,844,000 76,042,000 74,992,000 37,529,000 76,924,000 20,389,000 19,478,000 33,817,000 47,983,000 38,549,000 40,141,000 39,617,000 39,552,000 72,105,000 49,164,000 61,153,000 61,347,000 61,347,000 65,988,000 35,193,000 33,843,000 44,787,000 25,063,000 33,109,000 
          deferred income taxes
        		-49,013,000 -7,424,000 -950,000 -175,000 1,811,000 -63,454,000 6,081,000 12,515,000 -7,316,000 -70,079,000 -28,452,000 -997,000 -8,032,000 -160,042,000 45,987,000 2,360,000 -85,792,000 -808,000 1,119,000 -47,406,000 -22,079,000 -46,302,000 -19,935,000 -48,527,000 72,177,000 -20,530,000 -13,110,000 -16,897,000 -39,833,000 93,240,000 -2,219,000 -57,179,000 -24,697,000 -23,315,000 -8,197,000 18,884,000 22,133,000 -6,740,000 3,108,000 -17,978,000 -1,951,000 33,557,000 54,214,000 17,232,000 5,783,000 47,555,000 25,550,000 30,267,000 10,111,000 31,731,000 20,915,000 18,420,000 25,734,000 7,713,000    
          unsuccessful well costs and leasehold impairments
        		14,541,000 151,119,000 51,211,000 -1,741,000 1,903,000 70,617,000 1,187,000 2,219,000 466,000 -36,000 931,000 9,000 1,304,000 3,855,000 9,424,000 71,261,000 2,401,000 2,047,000 11,907,000 3,396,000 1,469,000 -1,181,000 3,483,000 1,627,000 19,228,000 80,452,000 262,000                               
          change in fair value of derivatives
        		302,976,000 -34,333,000 -2,792,000 -15,469,000 7,586,000 2,939,000 -9,298,000 -5,904,000 27,010,000 -24,118,000 52,687,000 2,118,000 -2,338,000 18,353,000 -110,262,000 76,568,000 290,806,000 18,416,000 36,130,000 117,001,000 106,158,000 54,956,000 -541,000 104,707,000 -136,322,000 33,433,000 -31,683,000 -8,121,000 73,807,000 -262,017,000 54,267,000 138,824,000 38,966,000 97,746,000 33,020,000 -20,767,000 -38,177,000 9,380,000 -17,996,000 57,552,000 -2,377,000 -83,251,000 -139,311,000        534,000       
          cash settlements on derivatives
        		-81,321,000 3,380,000 -3,480,000 5,787,000 494,000 -4,898,000 -7,388,000 -1,172,000 -6,194,000 -10,948,000 -10,846,000 725,000 -11,357,000 -40,140,000 -80,710,000 -130,568,000 -93,050,000 -81,512,000 -53,640,000 -63,617,000 -32,998,000 -27,848,000 -17,910,000 25,798,000 9,016,000 -6,757,000 -3,657,000 -17,468,000 -3,576,000 -35,237,000 -46,484,000 -35,824,000 -20,397,000 613,000 5,858,000    44,707,000 42,914,000 56,901,000 71,676,000 59,790,000 39,343,000 53,932,000             
          equity-based compensation
        		5,950,000 6,944,000 5,302,000 7,346,000 8,361,000 10,102,000 10,034,000 10,487,000 7,328,000 10,915,000 10,580,000 11,105,000 10,093,000 8,650,000 8,767,000 8,737,000 8,392,000 7,640,000 8,122,000 7,608,000 8,281,000 6,314,000 8,699,000 8,347,000 9,346,000 4,988,000 9,450,000 9,491,000 8,441,000 9,255,000 8,890,000 9,068,000 8,017,000 9,968,000 9,616,000 10,499,000 9,830,000 9,693,000 9,229,000 10,527,000 10,635,000 12,657,000 13,873,000 23,344,000 25,183,000 19,043,000 22,998,000 17,900,000 13,792,000 18,062,000 18,938,000 19,364,000 17,561,000 21,290,000 20,144,000   
          debt modifications and extinguishments
        		-1,217,000     379,000 2,263,000                                                   
          other
        		-7,561,000 -10,389,000 -2,986,000 -2,909,000 -5,597,000 -1,609,000 -138,000 -6,280,000 -5,708,000 3,162,000 4,021,000 799,000 -2,273,000 -4,159,000 -2,198,000 -1,454,000 -2,288,000 -775,000 -2,097,000 224,000 -890,000 9,249,000 144,000 2,555,000 3,974,000 -531,000 2,183,000 -3,230,000 10,647,000 1,628,000 788,000 927,000 -478,000 2,540,000 898,000 1,893,000 621,000 -3,000 -1,711,000 100,000 14,969,000 1,144,000 754,000 4,806,000 1,171,000    1,641,000 1,431,000 1,396,000 2,756,000 1,886,000 3,097,000 916,000   
          changes in assets and liabilities:
        		                                                         
          decrease in receivables
        		-3,144,000 15,685,000 5,829,000 33,395,000 37,264,000   17,568,000 -1,062,000 -10,457,000 -22,096,000 6,055,000 10,275,000 14,794,000    -35,783,000 14,902,000   3,986,000 30,514,000   -42,621,000 36,882,000 23,223,000 -47,219,000 116,636,000 49,251,000       -50,391,000   39,894,000            -26,635,000 182,519,000    
          increase in inventories and prepaid expenses
        		-20,550,000    -24,452,000    -29,155,000                                                 
          increase in accounts payable and accrued liabilities
        		49,004,000   4,123,000 -40,203,000   -13,235,000 92,181,000                                                 
          net cash from operating activities
        		106,556,000 35,300,000 -27,568,000 127,168,000 -888,000 175,747,000 6,282,000 223,657,000 272,563,000 293,776,000 249,431,000 18,110,000 203,853,000 267,240,000 255,050,000 278,558,000 329,628,000 230,503,000 -98,414,000 288,881,000 -46,626,000 175,488,000 83,493,000 -45,873,000 -16,963,000 227,874,000 177,886,000 239,737,000 -17,347,000 170,244,000 89,814,000 17,449,000 -17,016,000 142,205,000 111,926,000 12,868,000 -30,382,000 117,700,000 -41,545,000 -39,695,000 15,617,000 168,300,000 189,026,000   86,173,000 172,475,000 113,586,000 4,479,000 210,001,000 66,869,000 -10,575,000 15,782,000 144,903,000 212,647,000   
          capital expenditures
        		0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0   0 0 0 0 0 0 0 0 0 0   
          free cash flows
        		106,556,000 35,300,000 -27,568,000 127,168,000 -888,000 175,747,000 6,282,000 223,657,000 272,563,000 293,776,000 249,431,000 18,110,000 203,853,000 267,240,000 255,050,000 278,558,000 329,628,000 230,503,000 -98,414,000 288,881,000 -46,626,000 175,488,000 83,493,000 -45,873,000 -16,963,000 227,874,000 177,886,000 239,737,000 -17,347,000 170,244,000 89,814,000 17,449,000 -17,016,000 142,205,000 111,926,000 12,868,000 -30,382,000 117,700,000 -41,545,000 -39,695,000 15,617,000 168,300,000 189,026,000   86,173,000 172,475,000 113,586,000 4,479,000 210,001,000 66,869,000 -10,575,000 15,782,000 144,903,000 212,647,000   
          investing activities
        		                                                         
          oil and gas assets
        		-87,047,000 -70,275,000 -71,367,000 -82,521,000 -90,245,000 -161,421,000 -219,245,000 -238,171,000 -314,822,000 -320,689,000 -195,047,000 -193,182,000 -223,685,000 -243,948,000 -222,562,000 -211,953,000 -108,834,000 -95,506,000 -86,726,000 -161,951,000 -128,448,000 -162,066,000 -80,183,000 -51,526,000 -83,716,000 -99,575,000 -87,374,000 -74,891,000 -78,377,000 -64,501,000 -56,655,000 -57,938,000 -34,712,000 -39,783,000 -57,907,000 -10,995,000 -31,810,000 -29,719,000 -88,552,000 -191,133,000 -226,571,000 -264,300,000                
          notes receivable and other investing activities
        		-11,598,000 0 0 -42,743,000 -44,048,000                                                     
          net cash from investing activities
        		-98,645,000 -70,275,000 -71,367,000 -125,264,000 -134,293,000 -191,243,000 -219,245,000 -238,218,000 -317,350,000 -336,304,000 -208,384,000 -210,806,000 -239,356,000 -229,816,000 -239,312,000 -244,115,000 9,388,000 -559,142,000 -89,447,000 -174,201,000 -150,587,000 -76,463,000 -91,697,000 -69,904,000 -107,523,000 -95,433,000 -104,017,000 -85,033,000 -79,448,000 -26,840,000 -942,803,000 -20,096,000 4,601,000 -272,282,000 -58,092,000 5,971,000 171,838,000 10,648,000 -87,100,000 -234,681,000 -226,630,000 -259,203,000                
          financing activities
        		                                                         
          borrowings under long-term debt
        		124,167,000 300,000,000 175,000,000 100,000,000 100,000,000 50,000,000 100,000,000 0 175,000,000 0 150,000,000       475,000,000 150,000,000 0 100,000,000 0 150,000,000 100,000,000 50,000,000 0 0 0 175,000,000 175,000,000        0 125,000,000 175,000,000 150,000,000 0             0 0 1,393,000,000 
          payments on long-term debt
        		-277,738,000 -75,000,000 -50,000,000   0 0 -50,000,000 -300,000,000 0 -137,500,000 0 -7,500,000 -82,500,000 -7,500,000 -207,500,000 -107,500,000 -650,000,000 0 -50,000,000 -350,000,000     -100,000,000 -25,000,000 -200,000,000 -100,000,000 -150,000,000 -75,000,000   0 -50,000,000 -50,000,000 -150,000,000     0                
          net proceeds from issuance of senior notes and bonds
        		350,000,000                                                         
          repurchase and redemption of senior notes
        		-346,984,000                                                         
          net proceeds from issuance of common stock
        		206,440,000                                                         
          payments on finance lease
        		-5,262,000                                                         
          other financing costs
        		-7,731,000 -345,000 0   -1,113,000 -4,609,000 -19,234,000 -11,691,000                                                 
          net cash from financing activities
        		42,892,000 74,655,000 125,000,000 -1,000 100,000,000 48,887,000 90,731,000 -69,234,000 203,939,000 -869,000 11,966,000 149,998,000 -19,475,000 -82,500,000 -7,500,000 -208,063,000 -116,633,000 348,693,000 149,640,000 -66,061,000 191,893,000 -251,449,000 145,573,000 149,839,000 25,897,000 -118,153,000 -43,620,000 -112,429,000 53,713,000 -165,283,000 913,998,000 -106,595,000 -36,843,000 199,855,000 -50,171,000 -50,830,000 -151,115,000 -51,000 124,868,000 174,276,000 148,926,000 -128,000             -300,000,000 580,236,000 202,672,000 
          net increase in cash, cash equivalents and restricted cash
        		50,803,000   1,903,000 -35,181,000   -83,795,000 159,152,000 -43,397,000 53,013,000 -42,698,000 -54,978,000 -45,076,000 8,238,000 -173,620,000 222,383,000 20,054,000 -38,221,000   -152,424,000    14,288,000                                
          cash, cash equivalents and restricted cash at beginning of period
        		117,744,000 0 0 0 85,277,000 0 0 0 98,761,000 0 0 0 186,821,000 0 0 0 174,896,000 0 0 0 149,764,000 0 0 0 229,346,000 0 0 0 185,616,000 0 0 0 304,986,000 0 0 0 273,195,000                     
          cash, cash equivalents and restricted cash at end of period
        		168,547,000 39,680,000 26,065,000 1,903,000 50,096,000 33,391,000 -122,232,000 -83,795,000 257,913,000 -43,397,000 53,013,000 -42,698,000 131,843,000 -45,076,000 8,238,000 -173,620,000 397,279,000 20,054,000 -38,221,000 48,619,000 144,444,000 -152,424,000 137,369,000 34,062,000 130,757,000 14,288,000 30,249,000 42,275,000 142,534,000 -21,879,000 61,009,000 -109,242,000 255,728,000 69,778,000 3,663,000 -31,991,000 263,536,000                     
          supplemental cash flow information
        		                                                         
          cash paid for:
        		                                                         
          interest, net of capitalized interest
        		37,851,000         23,828,000 18,346,000 27,298,000 5,170,000 6,004,000 33,525,000 5,796,000 40,466,000 29,986,000 16,506,000 10,953,000 33,587,000 1,766,000 43,812,000 3,402,000 54,694,000 21,237,000 13,384,000 24,771,000 40,536,000                             
          income taxes, net of refund received
        		25,458,000  21,028,000 23,792,000 45,504,000 48,082,000 80,668,000 74,946,000 77,309,000 69,520,000 66,987,000 94,585,000 50,780,000 52,107,000 58,683,000 118,743,000 18,356,000 69,840,000 45,525,000 9,109,000 12,947,000 35,731,000                                    
          net income
        		 -377,141,000 -124,299,000 -87,740,000 -110,606,000 -6,579,000 44,974,000 59,770,000 91,686,000 21,681,000 85,185,000 23,345,000 83,309,000 -114,276,000 222,254,000 117,173,000 1,400,000                -50,226,000   -8,467,000 -28,841,000 -56,700,000 -59,763,000   24,000,000 60,265,000 -75,192,000 -78,909,000 19,123,000 56,507,000 74,969,000 -44,488,000 -70,816,000 20,094,000 -36,250,000 -24,843,000 -37,541,000 51,776,000 -9,091,000 -54,651,000 
          adjustments to reconcile net income to net cash from operating activities:
        		                                                         
          impairment of long-lived assets
        		                     3,139,000 0 0 150,820,000                                 
          gain on sale of assets
        		 -1,600,000 0           -50,000,000 0   0 -1,538,000 0 -26,000         0            0                
          decrease in inventories and prepaid expenses
        		                                                         
          net proceeds from issuance of senior notes
        		     0 494,855,000 0 390,430,000         395,000,000 0 0 444,375,000     0 0                               
          purchase of capped call transactions
        		     0 0 0 -49,800,000                                                 
          dividends
        		         0 0 -1,000 -165,000 0 0 -13,000 -642,000 0 -68,000 -14,000 -430,000 -97,000 7,000 -25,000 -19,156,000 -18,152,000 -18,158,000 -18,142,000 -18,147,000                             
          decrease in accounts payable and accrued liabilities
        		                                                         
          repurchase of senior notes
        		     0                                                    
          net decrease in cash, cash equivalents and restricted cash
        		                    -5,320,000   34,062,000 -98,589,000   42,275,000 -43,082,000  61,009,000 -109,242,000 -49,258,000  3,663,000 -31,991,000 -9,659,000                     
          acquisition of oil and gas properties
        		             -873,000 0                                           
          proceeds on sale of assets
        		             50,000,000 10,000 471,000 118,222,000 1,027,000 3,395,000 1,301,000 631,000 97,405,000 0 0 1,713,000     0    0 0 18,149,000 203,919,000 0 14,000   0 89,000   0 23,734,000 34,581,000          
          increase in receivables
        		               -78,803,000 -24,786,000    -13,278,000    -26,932,000        67,937,000   16,602,000 -44,853,000      8,933,000 -27,311,000 35,926,000           6,764,000 4,381,000 
          notes receivable from partners
        		      0 -47,000 -2,528,000 -15,615,000 -13,337,000 -17,624,000 -15,671,000 -34,995,000 -16,760,000   -21,000 -5,531,000 -13,765,000 -22,416,000 -11,538,000 -11,212,000 -18,379,000 -23,983,000 -7,353,000 -13,582,000                               
          loss on extinguishment of debt
        		         0    0 0 0 192,000 4,402,000 0   9,000 678,000   0 0   0 268,000 0 4,056,000         0 0   0 0 2,898,000       0 0 59,643,000 
          (increase) in inventories
        		          33,989,000 -30,253,000 -30,583,000                                             
          (increase) in prepaid expenses and other
        		          -16,932,000 -1,780,000 -4,208,000                                             
          increase in accounts payable
        		          -64,722,000 -9,442,000 60,920,000 -60,492,000 -13,963,000 64,794,000 13,385,000   83,884,000 -32,726,000    79,009,000             46,655,000          9,391,000          
          increase in accrued liabilities
        		          68,774,000 -76,017,000 -15,182,000 77,493,000 -94,341,000 17,313,000 78,366,000     8,396,000 7,493,000   63,748,000 37,224,000   -83,824,000 19,398,000 -4,621,000 -88,346,000 44,944,000 -14,486,000 43,405,000 12,732,000     32,815,000    -41,117,000 67,476,000 28,774,000 42,119,000 20,022,000 17,855,000   4,190,000    
          tax withholdings on restricted stock units
        		          0 -1,000 -11,810,000 0 0 0 -2,753,000 0 -63,000 -19,000 -1,018,000                                     
          deferred financing costs
        		             0 0 -550,000 -5,738,000 -7,313,000 -229,000 -16,028,000 -1,034,000 -1,352,000 -4,434,000   -1,000 -462,000 -821,000 -1,160,000 -1,927,000 -11,002,000 -774,000 -24,969,000         1,000                
          decrease in inventories
        		                        -27,123,000 22,973,000 -32,922,000 -21,233,000 2,212,000 4,870,000 3,178,000          2,237,000       4,872,000          
          decrease in prepaid expenses and other
        		                 20,018,000 -6,267,000 3,876,000 -2,409,000 4,629,000 6,717,000 -9,808,000 6,344,000 11,074,000 -5,868,000 16,783,000 12,597,000        352,000   5,311,000 13,674,000                 
          advances under production prepayment agreement
        		                     0 0                                   
          non-cash activity:
        		                                                         
          production prepayment agreement converted to gom term loan
        		                     0                                    
          increase in inventories
        		              5,021,000 -1,160,000 -8,238,000 9,699,000 -17,728,000 18,493,000 -25,045,000  -13,133,000          -7,849,000   4,006,000 -10,044,000 7,959,000 -10,984,000   -8,796,000         3,637,000    1,579,000 -6,873,000 7,420,000 
          increase in prepaid expenses and other
        		                -12,799,000                -2,439,000          -13,712,000               
          redemption of senior secured notes
        		                         0 0                               
          decrease in accounts payable
        		                      1,182,000    14,122,000 -16,700,000 -59,331,000  -1,862,000 -9,762,000 -3,554,000  11,155,000 -128,575,000 -2,905,000   -21,858,000 -58,501,000                 
          decrease in accrued liabilities
        		                    -21,427,000    -89,318,000    -42,508,000          -24,287,000 26,943,000 -36,910,000                 
          other property
        		                  -585,000 214,000 -354,000 -264,000 -302,000 1,000 -1,537,000 -3,505,000 -3,061,000 -4,159,000 -1,071,000 -4,375,000 -745,000 -1,058,000 -1,757,000 -1,219,000 -185,000 -1,183,000 -271,000 -995,000 -402,000 -554,000 -47,000 -690,000                
          acquisition of oil and gas properties, net of cash acquired
        		                             0                            
          return of investment from ktipi
        		                             42,036,000 62,658,000 38,900,000 41,070,000                         
          purchase of treasury stock / tax withholdings
        		                     0 0 0 -4,947,000 0 0 -3,000 -1,980,000 -188,356,000 0 -5,821,000 -11,874,000                         
          common stock issued for acquisition of oil and gas properties
        		                             0                            
          income taxes
        		                       27,325,000 26,874,000 16,141,000 13,149,000 4,181,000 10,438,000 20,383,000 3,005,000 1,353,000 21,243,000 21,616,000 0   7,000,000 19,000 4,244,000 2,734,000 7,113,000 11,625,000 7,119,000 10,000,000 56,701,000 23,936,000 20,431,000 20,994,000 24,422,000 4,300,000 0 11,607,000 5,013,000 125,000 350,000 375,000 
          distributions in excess of equity in earnings /
        		                                                         
          equity method investment
        		                                                         
          contribution to equity method investment
        		                                 0 0 -1,000 133,894,000                     
          dissolution of equity method investment
        		                                                         
          distributions in excess of equity in earnings
        		                              1,000 0 5,234,000                         
          unsuccessful well costs
        		                            -160,000 8,251,000 70,294,000 44,611,000 43,000 18,686,000 20,910,000 3,517,000 88,000 3,470,000 309,000 78,000 2,222,000 7,531,000 776,000 2,976,000 83,627,000 276,000   13,244,000 75,915,000 9,753,000 120,000 10,967,000 8,270,000 4,528,000 79,873,000 3,444,000 
          loss on equity method investment, net /
        		                                                         
          conversion of joint interest billings receivable to long-term note receivable
        		                                    4,042,000 1,690,000 3,091,000 1,616,000 3,417,000                 
          interest
        		                              39,136,000 14,565,000 33,280,000 6,687,000 23,750,000 4,385,000 20,559,000 2,320,000 17,340,000 -6,411,000 14,611,000 -6,026,000 11,006,000 -3,844,000 32,179,000 4,890,000 8,022,000 7,280,000 9,848,000 10,613,000 6,585,000 8,908,000 11,162,000 10,177,000 3,026,000 15,301,000 18,527,000 
          loss on equity method investment
        		                                 -4,978,000 4,804,000                       
          net proceeds from issuance of senior secured notes
        		                                         0 0               
          purchase of treasury stock
        		                                 -78,000 -171,000 -830,000 -1,115,000 -51,000 -132,000 -724,000 -1,074,000 -129,000                
          cash settlements on derivatives, net (including 11.4 million and 56.6 million on commodity hedges during 2017 and 2016
        		                                    11,153,000                     
          cash settlements on derivatives, net (including 187.9 million, 225.5 million and 18.4 million on commodity hedges during 2016, 2015 and 2014
        		                                                         
          restricted cash
        		                                      1,840,000 -43,190,000 -12,000 5,787,000       5,249,000 1,079,000 886,000  721,000 72,000 1,265,000 -27,714,000 112,000,000 
          net decrease in cash and cash equivalents
        		                                      -3,777,000 -100,100,000 -62,087,000                 
          cash and cash equivalents at beginning of period
        		                                      0 0 275,004,000 0 0 0 554,831,000 0 0 598,108,000 0 0 515,164,000 0 0 673,092,000 0 0 100,415,000 
          cash and cash equivalents at end of period
        		                                      -3,777,000 -100,100,000 212,917,000 -91,031,000 113,424,000 -107,854,000 360,465,000 -21,005,000 93,603,000 528,028,000 -68,607,000 11,585,000 497,289,000 -230,301,000 -115,337,000 745,288,000 -161,837,000 527,575,000 290,704,000 
          (increase) decrease in prepaid expenses and other
        		                                                         
          increase (decrease) in accounts payable
        		                                                         
          net increase (decrease) in cash and cash equivalents
        		                                                         
          net increase in cash and cash equivalents
        		                                             -21,005,000        72,196,000 -161,837,000 527,575,000 190,289,000 
          decrease (increase) in prepaid expenses and other
        		                                                         
          payment on long-term debt
        		                                                         
          non-cash change in fair value of derivatives
        		                                                         
          doubtful accounts expense
        		                                                         
          notes receivable
        		                                                      667,000 2,055,000 1,726,000 
          net proceeds from the initial public offering
        		                                                      0   
          derivative related activity
        		                                                      -5,844,000 3,262,000 11,256,000 
          deemed payment and termination of notes receivable
        		                                                         
          unit-based compensation
        		                                                        436,000 
          debt issue costs