v3.25.2
Business Segment Information - Business Segment Information (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Mar. 31, 2025
Jun. 30, 2024
Mar. 31, 2024
Jun. 30, 2025
Jun. 30, 2024
Dec. 31, 2024
Segment Reporting Information [Line Items]              
Oil and gas revenue $ 392,635   $ 450,900   $ 682,770 $ 870,003  
Gain on sale of assets 600       600    
Other income, net 283   36   579 72  
Total revenues and other income 393,518   450,936   683,949 870,075  
Oil and gas production 243,118   150,733   410,426 244,351  
Exploration expenses 4,069   13,235   13,738 25,295  
General and administrative 19,074   25,161   45,329 53,426  
Depletion, depreciation and amortization 151,268   90,094   271,935 191,022  
Interest and other financing costs, net 54,834   37,279   106,676 53,727  
Derivatives, net (21,566)   (2,852)   (14,834) 20,970  
Other expenses, net 6,481   2,162   8,470 4,191  
Total costs and expenses 457,278   315,812   841,740 592,982  
Income (loss) before income taxes (63,760)   135,124   (157,791) 277,093  
Income tax expense (benefit) 23,980   75,354   40,555 125,637  
Net income (loss) (87,740) $ (110,606) 59,770 $ 91,686 (198,346) 151,456  
Consolidated capital expenditures, net 86,107   215,416   172,295 501,644  
Property and equipment, net 4,357,812   4,558,313   4,357,812 4,558,313 $ 4,444,221
Total assets 5,213,006   5,389,310   5,213,006 5,389,310 $ 5,308,988
Operating Segments | Ghana              
Segment Reporting Information [Line Items]              
Oil and gas revenue 204,706   336,388   355,959 588,532  
Gain on sale of assets 0       0    
Other income, net 246   0   498 1  
Total revenues and other income 204,952   336,388   356,457 588,533  
Oil and gas production 95,357   78,248   136,668 96,295  
Exploration expenses 24   2,312   70 2,252  
General and administrative 2,904   3,289   6,189 6,878  
Depletion, depreciation and amortization 43,624   48,402   88,440 96,690  
Interest and other financing costs, net 13,242   12,528   24,384 25,797  
Derivatives, net 0   0   0 0  
Other expenses, net (11,084)   (2,856)   (5,888) 20,983  
Total costs and expenses 144,067   141,923   249,863 248,895  
Income (loss) before income taxes 60,885   194,465   106,594 339,638  
Income tax expense (benefit) 21,993   71,165   38,669 114,710  
Net income (loss) 38,892   123,300   67,925 224,928  
Consolidated capital expenditures, net 37,738   47,188   56,696 111,664  
Property and equipment, net 961,336   1,063,384   961,336 1,063,384  
Total assets 3,644,403   3,492,701   3,644,403 3,492,701  
Operating Segments | Equatorial Guinea              
Segment Reporting Information [Line Items]              
Oil and gas revenue 64,590   38,412   98,997 117,947  
Gain on sale of assets 0       0    
Other income, net 0   0   0 0  
Total revenues and other income 64,590   38,412   98,997 117,947  
Oil and gas production 39,957   19,679   56,935 60,705  
Exploration expenses (892)   2,196   1,469 3,382  
General and administrative 1,150   1,205   2,970 2,745  
Depletion, depreciation and amortization 27,468   9,298   42,568 23,892  
Interest and other financing costs, net (62)   (801)   (129) (1,595)  
Derivatives, net 0   0   0 0  
Other expenses, net (6,842)   (2,350)   (5,317) (2,353)  
Total costs and expenses 60,779   29,227   98,496 86,776  
Income (loss) before income taxes 3,811   9,185   501 31,171  
Income tax expense (benefit) 1,493   4,138   892 12,563  
Net income (loss) 2,318   5,047   (391) 18,608  
Consolidated capital expenditures, net 3,914   33,621   2,557 78,240  
Property and equipment, net 446,405   483,773   446,405 483,773  
Total assets 2,458,795   2,217,658   2,458,795 2,217,658  
Operating Segments | Mauritania/Senegal              
Segment Reporting Information [Line Items]              
Oil and gas revenue 20,239   0   22,936 0  
Gain on sale of assets 0       0    
Other income, net 0   0   0 0  
Total revenues and other income 20,239   0   22,936 0  
Oil and gas production 69,141   18,166   127,242 18,166  
Exploration expenses 2,119   4,071   3,737 9,247  
General and administrative 2,575   2,101   5,103 5,266  
Depletion, depreciation and amortization 12,677   227   15,595 451  
Interest and other financing costs, net 5,416   (34,933)   4,402 (70,765)  
Derivatives, net 0   0   0 0  
Other expenses, net 433   3,627   1,147 5,230  
Total costs and expenses 92,361   (6,741)   157,226 (32,405)  
Income (loss) before income taxes (72,122)   6,741   (134,290) 32,405  
Income tax expense (benefit) 0   0   0 0  
Net income (loss) (72,122)   6,741   (134,290) 32,405  
Consolidated capital expenditures, net 13,105   84,622   62,118 211,196  
Property and equipment, net 2,106,488   2,065,242   2,106,488 2,065,242  
Total assets 3,352,428   3,008,000   3,352,428 3,008,000  
Operating Segments | Gulf of America              
Segment Reporting Information [Line Items]              
Oil and gas revenue 103,100   76,100   204,878 163,524  
Gain on sale of assets 600       600    
Other income, net 219   975   708 1,485  
Total revenues and other income 103,919   77,075   206,186 165,009  
Oil and gas production 38,663   34,640   89,581 69,185  
Exploration expenses 2,649   3,125   7,145 8,012  
General and administrative 3,269   5,514   8,453 11,372  
Depletion, depreciation and amortization 67,364   31,811   125,039 69,269  
Interest and other financing costs, net (2,141)   (4,301)   (4,161) (8,393)  
Derivatives, net 0   0   0 0  
Other expenses, net 1,915   1,012   3,262 1,318  
Total costs and expenses 111,719   71,801   229,319 150,763  
Income (loss) before income taxes (7,800)   5,274   (23,133) 14,246  
Income tax expense (benefit) 97   0   (14) 80  
Net income (loss) (7,897)   5,274   (23,119) 14,166  
Consolidated capital expenditures, net 31,181   48,454   49,513 97,735  
Property and equipment, net 827,437   928,566   827,437 928,566  
Total assets 4,112,600   4,052,704   4,112,600 4,052,704  
Corporate & Other              
Segment Reporting Information [Line Items]              
Oil and gas revenue 0   0   0 0  
Gain on sale of assets 0       0    
Other income, net 13,880   34,773   60,671 100,514  
Total revenues and other income 13,880   34,773   60,671 100,514  
Oil and gas production 0   0   0 0  
Exploration expenses 169   1,531   1,317 2,402  
General and administrative 44,804   51,616   98,746 108,123  
Depletion, depreciation and amortization 135   356   293 720  
Interest and other financing costs, net 38,379   64,786   82,180 108,683  
Derivatives, net (21,566)   (2,852)   (14,834) 20,970  
Other expenses, net 493   (123)   432 (17)  
Total costs and expenses 62,414   115,314   168,134 240,881  
Income (loss) before income taxes (48,534)   (80,541)   (107,463) (140,367)  
Income tax expense (benefit) 397   51   1,008 (1,716)  
Net income (loss) (48,931)   (80,592)   (108,471) (138,651)  
Consolidated capital expenditures, net 169   1,531   1,411 2,809  
Property and equipment, net 16,146   17,348   16,146 17,348  
Total assets 25,932,829   24,601,589   25,932,829 24,601,589  
Eliminations              
Segment Reporting Information [Line Items]              
Oil and gas revenue 0   0   0 0  
Gain on sale of assets 0       0    
Other income, net (14,062)   (35,712)   (61,298) (101,928)  
Total revenues and other income (14,062)   (35,712)   (61,298) (101,928)  
Oil and gas production 0   0   0 0  
Exploration expenses 0   0   0 0  
General and administrative (35,628)   (38,564)   (76,132) (80,958)  
Depletion, depreciation and amortization 0   0   0 0  
Interest and other financing costs, net 0   0   0 0  
Derivatives, net 0   0   0 0  
Other expenses, net 21,566   2,852   14,834 (20,970)  
Total costs and expenses (14,062)   (35,712)   (61,298) (101,928)  
Income (loss) before income taxes 0   0   0 0  
Income tax expense (benefit) 0   0   0 0  
Net income (loss) 0   0   0 0  
Consolidated capital expenditures, net 0   0   0 0  
Property and equipment, net 0   0   0 0  
Total assets $ (34,288,049)   $ (31,983,342)   $ (34,288,049) $ (31,983,342)