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Business Segment Information - Summarized Financial Information Concerning Segments (Details) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2015 USD ($) | Sep. 30, 2015 USD ($) | Jun. 30, 2015 USD ($) | Mar. 31, 2015 USD ($) | Dec. 31, 2014 USD ($) | Sep. 30, 2014 USD ($) | Jun. 30, 2014 USD ($) | Mar. 31, 2014 USD ($) | Dec. 31, 2015 USD ($) business_unit segment | Dec. 31, 2014 USD ($) segment | Dec. 31, 2013 USD ($) segment
Segment Reporting [Abstract] |  |  |  |  |  |  |  |  |  |  |
Reportable segments | segment |  |  |  |  |  |  |  |  | 3 | 3 | 3
Business units | business_unit |  |  |  |  |  |  |  |  | 3 |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues | $ 143,642 | $ 180,152 | $ 229,607 | $ 215,308 | $ 346,881 | $ 394,107 | $ 374,714 | $ 443,056 | $ 768,709 | $ 1,558,758 | $ 1,983,388
Income (loss) from operations | (959,406) | $ (1,059,733) | $ (1,535,083) | $ (1,088,456) | 373,984 | $ 256,491 | $ 42,079 | $ (82,330) | (4,642,678) | 590,224 | (169,001)
Interest income (expense), net |  |  |  |  |  |  |  |  | (321,421) | (244,109) | (270,234)
Gain (loss) on extinguishment of debt |  |  |  |  |  |  |  |  | 641,131 | 0 | (82,005)
Other income (expense), net |  |  |  |  |  |  |  |  | 2,040 | 3,490 | 12,445
(Loss) income before income taxes |  |  |  |  |  |  |  |  | (4,320,928) | 349,605 | (508,795)
Capital expenditures |  |  |  |  |  |  |  |  | 701,615 | 1,608,889 | 1,423,883
Depreciation, depletion, amortization and accretion |  |  |  |  |  |  |  |  | 371,772 | 503,023 | 666,645
Total assets | 2,991,155 |  |  |  | 7,259,225 |  |  |  | 2,991,155 | 7,259,225 |
Exploration and Production |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 707,434 | 1,422,900 | 1,834,160
Income (loss) from operations |  |  |  |  |  |  |  |  | (4,461,907) | 713,716 | 62,509
Interest income (expense), net |  |  |  |  |  |  |  |  | (42) | 100 | 1,168
Gain (loss) on extinguishment of debt |  |  |  |  |  |  |  |  | 0 |  | 0
Other income (expense), net |  |  |  |  |  |  |  |  | 1,368 | (423) | 5,487
(Loss) income before income taxes |  |  |  |  |  |  |  |  | (4,460,581) | 713,393 | 69,164
Capital expenditures |  |  |  |  |  |  |  |  | 656,022 | 1,508,100 | 1,319,012
Depreciation, depletion, amortization and accretion |  |  |  |  |  |  |  |  | 324,471 | 443,573 | 605,242
Total assets | 1,959,975 |  |  |  | 6,273,802 |  |  |  | 1,959,975 | 6,273,802 |
Drilling and Oil Field Services |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 22,124 | 76,088 | 66,641
Income (loss) from operations |  |  |  |  |  |  |  |  | (59,999) | (37,564) | (40,155)
Interest income (expense), net |  |  |  |  |  |  |  |  | 0 | 0 | 0
Gain (loss) on extinguishment of debt |  |  |  |  |  |  |  |  | 0 |  | 0
Other income (expense), net |  |  |  |  |  |  |  |  | 13 | (541) | 0
(Loss) income before income taxes |  |  |  |  |  |  |  |  | (59,986) | (38,105) | (40,155)
Capital expenditures |  |  |  |  |  |  |  |  | 4,632 | 18,385 | 7,125
Depreciation, depletion, amortization and accretion |  |  |  |  |  |  |  |  | 17,438 | 29,105 | 33,291
Total assets | 27,621 |  |  |  | 115,083 |  |  |  | 27,621 | 115,083 |
Midstream Services |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 33,809 | 55,394 | 79,460
Income (loss) from operations |  |  |  |  |  |  |  |  | (15,218) | (9,094) | (21,567)
Interest income (expense), net |  |  |  |  |  |  |  |  | 0 | 0 | (209)
Gain (loss) on extinguishment of debt |  |  |  |  |  |  |  |  | 0 |  | 0
Other income (expense), net |  |  |  |  |  |  |  |  | 253 | 9 | (3,222)
(Loss) income before income taxes |  |  |  |  |  |  |  |  | (14,965) | (9,085) | (24,998)
Capital expenditures |  |  |  |  |  |  |  |  | 21,556 | 44,606 | 55,706
Depreciation, depletion, amortization and accretion |  |  |  |  |  |  |  |  | 11,742 | 10,085 | 7,972
Total assets | 254,212 |  |  |  | 219,691 |  |  |  | 254,212 | 219,691 |
All Other |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 5,342 | 4,376 | 3,127
Income (loss) from operations |  |  |  |  |  |  |  |  | (105,554) | (76,834) | (169,788)
Interest income (expense), net |  |  |  |  |  |  |  |  | (321,379) | (244,209) | (271,193)
Gain (loss) on extinguishment of debt |  |  |  |  |  |  |  |  | 641,131 |  | (82,005)
Other income (expense), net |  |  |  |  |  |  |  |  | 406 | 4,445 | 10,180
(Loss) income before income taxes |  |  |  |  |  |  |  |  | 214,604 | (316,598) | (512,806)
Capital expenditures |  |  |  |  |  |  |  |  | 19,405 | 37,798 | 42,040
Depreciation, depletion, amortization and accretion |  |  |  |  |  |  |  |  | 18,121 | 20,260 | 20,140
Total assets | $ 749,347 |  |  |  | $ 650,649 |  |  |  | 749,347 | 650,649 |
Operating Segments |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 861,229 | 1,763,380 | 2,205,052
Operating Segments | Exploration and Production |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 707,446 | 1,423,073 | 1,834,480
Operating Segments | Drilling and Oil Field Services |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 67,358 | 192,944 | 187,456
Operating Segments | Midstream Services |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 81,083 | 142,987 | 179,989
Operating Segments | All Other |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 5,342 | 4,376 | 3,127
Intersegment Eliminations |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | (92,520) | (204,622) | (221,664)
Intersegment Eliminations | Exploration and Production |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | (12) | (173) | (320)
Intersegment Eliminations | Drilling and Oil Field Services |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | (45,234) | (116,856) | (120,815)
Intersegment Eliminations | Midstream Services |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | (47,274) | (87,593) | (100,529)
Intersegment Eliminations | All Other |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | $ 0 | $ 0 | $ 0

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