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Business Segment Information - Summarized Financial Information of Segments (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2017 | Sep. 30, 2016 | Dec. 31, 2016
Segment Reporting Information [Line Items] |  |  |  |  |
Total revenues | $ 304,748 | $ 177,311 | $ 843,955 | $ 486,674 |
Operating income | 32,394 | (25,702) | 57,865 | (129,131) |
Other income (expense) | (92,304) | (24,931) | (59,006) | (156,015) |
Loss before income taxes | (59,910) | (50,633) | (1,141) | (285,146) |
Property, plant and equipment, net | 6,035,618 |  | 6,035,618 |  | $ 5,919,567
Total assets | 6,391,212 |  | 6,391,212 |  | 6,178,632
Exploration and Production [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total revenues | 269,843 | 158,183 | 761,450 | 434,835 |
Midstream Services [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total revenues | 47,660 | 29,277 | 125,613 | 88,030 |
Well Services [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total revenues | 47,163 | 22,459 | 101,594 | 74,482 |
Operating Segments [Member] | Exploration and Production [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total revenues | 269,843 | 158,183 | 761,450 | 434,835 |
Operating income | 3,484 | (41,857) | (12,972) | (175,480) |
Other income (expense) | (92,319) | (24,476) | (59,027) | (155,595) |
Loss before income taxes | (88,835) | (66,333) | (71,999) | (331,075) |
Property, plant and equipment, net | 5,595,611 |  | 5,595,611 |  | 5,620,558
Total assets | 5,930,040 |  | 5,930,040 |  | 5,868,747
Operating Segments [Member] | Midstream Services [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total revenues | 18,767 | 8,487 | 48,939 | 22,380 |
Operating income | 25,194 | 16,525 | 69,059 | 49,724 |
Other income (expense) | (15) | (460) | (13) | (462) |
Loss before income taxes | 25,179 | 16,065 | 69,046 | 49,262 |
Property, plant and equipment, net | 577,883 |  | 577,883 |  | 424,197
Total assets | 589,506 |  | 589,506 |  | 431,095
Operating Segments [Member] | Well Services [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total revenues | 16,138 | 10,641 | 33,566 | 29,459 |
Operating income | 10,802 | 1,572 | 9,161 | 3,420 |
Other income (expense) | 30 | 5 | 34 | 42 |
Loss before income taxes | 10,832 | 1,577 | 9,195 | 3,462 |
Property, plant and equipment, net | 43,175 |  | 43,175 |  | 47,189
Total assets | 52,717 |  | 52,717 |  | 51,167
Segment Reconciling Items [Member] | Exploration and Production [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total revenues | 0 | 0 | 0 | 0 |
Segment Reconciling Items [Member] | Midstream Services [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total revenues | 28,893 | 20,790 | 76,674 | 65,650 |
Segment Reconciling Items [Member] | Well Services [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total revenues | 31,025 | 11,818 | 68,028 | 45,023 |
Intersegment Eliminations [Member] |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Total revenues | (59,918) | (32,608) | (144,702) | (110,673) |
Operating income | (7,086) | (1,942) | (7,383) | (6,795) |
Other income (expense) | 0 | 0 | 0 | 0 |
Loss before income taxes | (7,086) | $ (1,942) | (7,383) | $ (6,795) |
Property, plant and equipment, net | (181,051) |  | (181,051) |  | (172,377)
Total assets | $ (181,051) |  | $ (181,051) |  | $ (172,377)

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