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Condensed Consolidating Financial Information - Statements of Income (Loss) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2015 | Jun. 30, 2017 | Jun. 30, 2016
Revenues and other income: |  |  |  |  |
Operating revenues | $ 631,355 | $ 571,591 |  | $ 1,193,905 | $ 1,169,162
Earnings (losses) from unconsolidated affiliates |  | (54,769) |  | 2 | (221,920)
Investment income (loss) | (886) | 270 |  | (165) | 613
Total revenues and other income | 630,469 | 517,092 |  | 1,193,742 | 947,855
Costs and other deductions: |  |  |  |  |
Direct costs | 417,521 | 341,279 |  | 805,165 | 706,302
General and administrative expenses | 63,695 | 56,624 |  | 127,104 | 118,958
Research and engineering | 11,343 | 8,180 |  | 23,100 | 16,342
Depreciation and amortization | 208,090 | 218,913 |  | 411,762 | 434,731
Interest expense | 54,688 | 45,237 |  | 111,206 | 90,967
Other, net | 10,104 | 74,607 |  | 23,614 | 257,011
Total costs and other deductions | 765,441 | 744,840 |  | 1,501,951 | 1,624,311
Income (loss) from continuing operations before income taxes | (134,972) | (227,748) |  | (308,209) | (676,456)
Income tax expense (benefit) | (19,496) | (41,183) |  | (45,105) | (93,247)
Income (loss) from continuing operations, net of tax | (115,476) | (186,565) |  | (263,104) | (583,209)
Income (loss) from discontinued operations, net of tax | (15,504) | (984) |  | (15,943) | (1,910)
Net income (loss) | (130,980) | (187,549) |  | (279,047) | (585,119)
Less: Net (income) loss attributable to noncontrolling interest | (1,971) | 2,899 |  | (2,888) | 2,175
Net income (loss) attributable to Nabors | (132,951) | (184,650) |  | (281,935) | (582,944)
Consolidating Adjustments |  |  |  |  |
Revenues and other income: |  |  |  |  |
Earnings (losses) from consolidated affiliates | 210,634 | 248,364 |  | 503,461 | 888,191
Investment income (loss) | (2,980) | (2,981) |  | (5,960) | (5,962)
Intercompany interest income |  | (104) |  |  | (264)
Total revenues and other income | 207,654 | 245,279 |  | 497,501 | 881,965
Costs and other deductions: |  |  |  |  |
General and administrative expenses | (325) | (157) |  | (504) | (314)
Other, net | 325 | 157 |  | 504 | 314
Intercompany interest expense |  | (104) |  |  | (264)
Total costs and other deductions |  | (104) |  |  | (264)
Income (loss) from continuing operations before income taxes | 207,654 | 245,383 |  | 497,501 | 882,229
Income (loss) from continuing operations, net of tax | 207,654 | 245,383 |  | 497,501 | 882,229
Net income (loss) | 207,654 | 245,383 |  | 497,501 | 882,229
Net income (loss) attributable to Nabors | 207,654 | 245,383 |  | 497,501 | 882,229
Parent Company | Reportable Legal Entities |  |  |  |  |
Revenues and other income: |  |  |  |  |
Earnings (losses) from consolidated affiliates | (129,592) | (182,149) |  | (275,463) | (577,919)
Investment income (loss) | (2) | 1 |  | 15 | 1
Intercompany interest income |  | 9 |  |  | 9
Total revenues and other income | (129,594) | (182,139) |  | (275,448) | (577,909)
Costs and other deductions: |  |  |  |  |
General and administrative expenses | 3,359 | 2,352 |  | 6,657 | 4,714
Other, net | (2) | 159 |  | (161) | 316
Intercompany interest expense |  |  |  | (9) | 5
Total costs and other deductions | 3,357 | 2,511 |  | 6,487 | 5,035
Income (loss) from continuing operations before income taxes | (132,951) | (184,650) |  | (281,935) | (582,944)
Income (loss) from continuing operations, net of tax | (132,951) | (184,650) |  | (281,935) | (582,944)
Net income (loss) | (132,951) | (184,650) |  | (281,935) | (582,944)
Net income (loss) attributable to Nabors | (132,951) | (184,650) |  | (281,935) | (582,944)
Guarantor Subsidiaries | Reportable Legal Entities |  |  |  |  |
Revenues and other income: |  |  |  |  |
Earnings (losses) from consolidated affiliates | (20,265) | (17,025) |  | (70,982) | (123,112)
Investment income (loss) | 1 | 9 |  | 64 | 132
Intercompany interest income |  | 95 |  |  | 255
Total revenues and other income | (20,264) | (16,921) |  | (70,918) | (122,725)
Costs and other deductions: |  |  |  |  |
General and administrative expenses | 193 | 135 |  | 330 | 266
Depreciation and amortization | 31 | 31 |  | 62 | 62
Interest expense | 56,505 | 51,059 |  | 117,260 | 101,723
Other, net | 7,576 | (65) |  | 18,973 |
Total costs and other deductions | 64,305 | 51,160 |  | 136,625 | 102,051
Income (loss) from continuing operations before income taxes | (84,569) | (68,081) |  | (207,543) | (224,776)
Income tax expense (benefit) | (23,792) | (18,891) |  | (50,527) | (37,616)
Income (loss) from continuing operations, net of tax | (60,777) | (49,190) |  | (157,016) | (187,160)
Net income (loss) | (60,777) | (49,190) |  | (157,016) | (187,160)
Net income (loss) attributable to Nabors | (60,777) | (49,190) |  | (157,016) | (187,160)
Other Subsidiaries (Non-Guarantors) | Reportable Legal Entities |  |  |  |  |
Revenues and other income: |  |  |  |  |
Operating revenues | 631,355 |  | $ 571,591 | 1,193,905 | 1,169,162
Earnings (losses) from unconsolidated affiliates |  |  | (54,769) | 2 | (221,920)
Earnings (losses) from consolidated affiliates | (60,777) |  | (49,190) | (157,016) | (187,160)
Investment income (loss) | 2,095 |  | 3,241 | 5,716 | 6,442
Total revenues and other income | 572,673 |  | 470,873 | 1,042,607 | 766,524
Costs and other deductions: |  |  |  |  |
Direct costs | 417,521 |  | 341,279 | 805,165 | 706,302
General and administrative expenses | 60,468 |  | 54,294 | 120,621 | 114,292
Research and engineering | 11,343 |  | 8,180 | 23,100 | 16,342
Depreciation and amortization | 208,059 |  | 218,882 | 411,700 | 434,669
Interest expense | (1,817) |  | (5,822) | (6,054) | (10,756)
Other, net | 2,205 |  | 74,356 | 4,298 | 256,381
Intercompany interest expense |  |  | 104 | 9 | 259
Total costs and other deductions | 697,779 |  | 691,273 | 1,358,839 | 1,517,489
Income (loss) from continuing operations before income taxes | (125,106) |  | (220,400) | (316,232) | (750,965)
Income tax expense (benefit) | 4,296 |  | (22,292) | 5,422 | (55,631)
Income (loss) from continuing operations, net of tax | (129,402) |  | (198,108) | (321,654) | (695,334)
Income (loss) from discontinued operations, net of tax | (15,504) |  | (984) | (15,943) | (1,910)
Net income (loss) | (144,906) |  | (199,092) | (337,597) | (697,244)
Less: Net (income) loss attributable to noncontrolling interest | (1,971) | 2,899 | 2,899 | (2,888) | 2,175
Net income (loss) attributable to Nabors | $ (146,877) | $ (196,193) | $ (196,193) | $ (340,485) | $ (695,069)

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