Reportable Segments - Results of Operations by Reportable Segment (Detail) - USD ($) |
3 Months Ended | 12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2018 |
Sep. 30, 2018 |
Jun. 30, 2018 |
Mar. 31, 2018 |
Dec. 31, 2017 |
Sep. 30, 2017 |
Jun. 30, 2017 |
Mar. 31, 2017 |
Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2016 |
|
| Revenues: | |||||||||||
| Revenues | $ 480,821,000 | $ 442,520,000 | $ 427,004,000 | ||||||||
| Operating income: | |||||||||||
| Total operating gross margin (loss) | $ 3,815,000 | $ 1,932,000 | $ (167,000) | $ (10,408,000) | $ (4,700,000) | $ 121,000 | $ (11,016,000) | $ (19,745,000) | (4,828,000) | (35,340,000) | (75,312,000) |
| General and administrative expense | (24,545,000) | (25,676,000) | (34,332,000) | ||||||||
| Loss on impairment | (50,698,000) | 0 | 0 | ||||||||
| Provision for reduction in carrying value of certain assets | 0 | (1,938,000) | 0 | ||||||||
| Gain (loss) on disposition of assets, net | (1,724,000) | (2,851,000) | (1,613,000) | ||||||||
| Pre-petition restructuring charges | (21,820,000) | 0 | 0 | ||||||||
| Reorganization items | (9,789,000) | 0 | |||||||||
| Total operating income (loss) | (31,661,000) | $ (56,544,000) | $ (8,933,000) | $ (16,266,000) | (14,221,000) | $ (6,815,000) | $ (17,632,000) | $ (27,137,000) | (113,404,000) | (65,805,000) | (111,257,000) |
| Interest expense | (42,565,000) | (44,226,000) | (45,812,000) | ||||||||
| Interest income | 91,000 | 244,000 | 58,000 | ||||||||
| Other | (2,023,000) | 126,000 | 367,000 | ||||||||
| Income (loss) before income taxes | (157,901,000) | (109,661,000) | (156,644,000) | ||||||||
| Capital expenditures: | |||||||||||
| Total capital expenditures | 70,567,000 | 54,533,000 | 28,954,000 | ||||||||
| Depreciation and amortization: | |||||||||||
| Total depreciation and amortization | 107,545,000 | 122,373,000 | 139,795,000 | ||||||||
| Identifiable assets: | |||||||||||
| Total assets | 828,414,000 | 990,279,000 | 828,414,000 | 990,279,000 | |||||||
| Operating Segments | |||||||||||
| Identifiable assets: | |||||||||||
| Total assets | 759,733,000 | 851,908,000 | 759,733,000 | 851,908,000 | |||||||
| Corporate | |||||||||||
| Capital expenditures: | |||||||||||
| Total capital expenditures | 859,000 | 2,098,000 | 2,859,000 | ||||||||
| Depreciation and amortization: | |||||||||||
| Total depreciation and amortization | 8,400,000 | 8,700,000 | 8,300,000 | ||||||||
| Identifiable assets: | |||||||||||
| Total assets | 68,681,000 | 138,371,000 | 68,681,000 | 138,371,000 | |||||||
| Drilling Services: | |||||||||||
| Revenues: | |||||||||||
| Revenues | 225,140,000 | 259,643,000 | 292,761,000 | ||||||||
| Operating income: | |||||||||||
| Total operating gross margin (loss) | (37,656,000) | (26,904,000) | (25,081,000) | ||||||||
| U.S. (Lower 48) Drilling | |||||||||||
| Revenues: | |||||||||||
| Revenues | 11,729,000 | 12,389,000 | 5,429,000 | ||||||||
| Operating income: | |||||||||||
| Total operating gross margin (loss) | (15,720,000) | (20,656,000) | (34,353,000) | ||||||||
| U.S. (Lower 48) Drilling | Operating Segments | |||||||||||
| Capital expenditures: | |||||||||||
| Total capital expenditures | 444,000 | 230,000 | 264,000 | ||||||||
| Depreciation and amortization: | |||||||||||
| Total depreciation and amortization | 7,758,000 | 13,521,000 | 20,049,000 | ||||||||
| Identifiable assets: | |||||||||||
| Total assets | 30,283,000 | 62,980,000 | 30,283,000 | 62,980,000 | |||||||
| International & Alaska Drilling | |||||||||||
| Revenues: | |||||||||||
| Revenues | 213,411,000 | 247,254,000 | 287,332,000 | ||||||||
| Operating income: | |||||||||||
| Total operating gross margin (loss) | (21,936,000) | (6,248,000) | 9,272,000 | ||||||||
| International & Alaska Drilling | Operating Segments | |||||||||||
| Capital expenditures: | |||||||||||
| Total capital expenditures | 7,444,000 | 3,673,000 | 5,258,000 | ||||||||
| Depreciation and amortization: | |||||||||||
| Total depreciation and amortization | 36,072,000 | 46,950,000 | 55,236,000 | ||||||||
| Identifiable assets: | |||||||||||
| Total assets | 366,856,000 | 421,753,000 | 366,856,000 | 421,753,000 | |||||||
| Rental Tools Services: | |||||||||||
| Revenues: | |||||||||||
| Revenues | 255,681,000 | 182,877,000 | 134,243,000 | ||||||||
| Operating income: | |||||||||||
| Total operating gross margin (loss) | 32,828,000 | (8,436,000) | (50,231,000) | ||||||||
| U.S. Rental Tools | |||||||||||
| Revenues: | |||||||||||
| Revenues | 176,531,000 | 121,937,000 | 71,613,000 | ||||||||
| Operating income: | |||||||||||
| Total operating gross margin (loss) | 44,512,000 | 15,651,000 | (22,372,000) | ||||||||
| U.S. Rental Tools | Operating Segments | |||||||||||
| Capital expenditures: | |||||||||||
| Total capital expenditures | 55,545,000 | 39,948,000 | 10,848,000 | ||||||||
| Depreciation and amortization: | |||||||||||
| Total depreciation and amortization | 48,167,000 | 43,489,000 | 43,769,000 | ||||||||
| Identifiable assets: | |||||||||||
| Total assets | 216,123,000 | 198,664,000 | 216,123,000 | 198,664,000 | |||||||
| International Rental Tools | |||||||||||
| Revenues: | |||||||||||
| Revenues | 79,150,000 | 60,940,000 | 62,630,000 | ||||||||
| Operating income: | |||||||||||
| Total operating gross margin (loss) | (11,684,000) | (24,087,000) | (27,859,000) | ||||||||
| International Rental Tools | Operating Segments | |||||||||||
| Capital expenditures: | |||||||||||
| Total capital expenditures | 6,275,000 | 8,584,000 | 9,725,000 | ||||||||
| Depreciation and amortization: | |||||||||||
| Total depreciation and amortization | 15,548,000 | 18,413,000 | $ 20,741,000 | ||||||||
| Identifiable assets: | |||||||||||
| Total assets | $ 146,471,000 | $ 168,511,000 | $ 146,471,000 | $ 168,511,000 | |||||||