Segment Information (Financial information for Company's segments) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended | |
Jun. 30, 2015 | Jun. 30, 2014 | Jun. 30, 2015 | Jun. 30, 2014 | Dec. 31, 2014 |
Segment Reporting Information [Line Items] | | | | | |
Total revenues | $ 710,784 | $ 1,107,552 | $ 1,628,019 | $ 2,168,970 | |
Cost of services (exclusive of items shown separately below) | 465,533 | 650,293 | 1,047,779 | 1,301,898 | |
Depreciation, depletion, amortization and accretion | 158,352 | 160,965 | 320,572 | 323,283 | |
General and administrative expenses | 129,661 | 146,853 | 280,623 | 302,772 | |
Reduction in value of assets | 807,637 | | 807,637 | | |
Income from operations | (850,399) | 149,441 | (828,592) | 241,017 | |
Interest income (expense), net | (25,382) | (24,560) | (48,591) | (48,441) | |
Other Nonoperating Income (Expense) | (6,524) | 606 | (7,495) | 571 | |
Income (loss) from continuing operations before income taxes | (882,305) | 125,487 | (884,678) | 193,147 | |
Identifiable Assets | 6,215,587 | | 6,215,587 | | $ 7,377,389 |
Disposal Group, Including Discontinued Operation, Assets | 131,600 | | 131,600 | | 116,700 |
Subsea and Technical Solutions [Member] | | | | | |
Segment Reporting Information [Line Items] | | | | | |
Total revenues | 127,007 | 139,646 | 242,322 | 269,742 | |
Cost of services (exclusive of items shown separately below) | 77,991 | 71,530 | 151,557 | 144,523 | |
Depreciation, depletion, amortization and accretion | 16,473 | 18,059 | 30,638 | 32,948 | |
General and administrative expenses | 29,066 | 26,646 | 58,094 | 55,249 | |
Income from operations | 3,477 | 23,411 | 2,033 | 37,022 | |
Interest income (expense), net | 424 | 398 | 841 | 763 | |
Income (loss) from continuing operations before income taxes | 3,901 | 23,809 | 2,874 | 37,785 | |
Identifiable Assets | 926,833 | | 926,833 | | 946,813 |
Production Services [Member] | | | | | |
Segment Reporting Information [Line Items] | | | | | |
Total revenues | 208,744 | 343,876 | 460,213 | 665,111 | |
Cost of services (exclusive of items shown separately below) | 156,615 | 231,119 | 347,929 | 458,344 | |
Depreciation, depletion, amortization and accretion | 36,671 | 40,180 | 75,831 | 81,988 | |
General and administrative expenses | 36,435 | 45,243 | 80,117 | 92,431 | |
Reduction in value of assets | 751,577 | | 751,577 | | |
Income from operations | (772,554) | 27,334 | (795,241) | 32,348 | |
Interest income (expense), net | (369) | | (134) | | |
Income (loss) from continuing operations before income taxes | (772,923) | 27,334 | (795,375) | 32,348 | |
Identifiable Assets | 1,160,351 | | 1,160,351 | | 2,116,171 |
Onshore Completion and Workover Services [Member] | | | | | |
Segment Reporting Information [Line Items] | | | | | |
Total revenues | 226,363 | 398,048 | 577,355 | 787,925 | |
Cost of services (exclusive of items shown separately below) | 182,143 | 274,907 | 436,258 | 559,142 | |
Depreciation, depletion, amortization and accretion | 55,479 | 55,382 | 115,290 | 115,986 | |
General and administrative expenses | 33,031 | 36,011 | 71,323 | 74,979 | |
Reduction in value of assets | 40,263 | | 40,263 | | |
Income from operations | (84,553) | 31,748 | (85,779) | 37,818 | |
Income (loss) from continuing operations before income taxes | (84,553) | 31,748 | (85,779) | 37,818 | |
Identifiable Assets | 2,785,323 | | 2,785,323 | | 3,010,295 |
Drilling Products and Services [Member] | | | | | |
Segment Reporting Information [Line Items] | | | | | |
Total revenues | 148,670 | 225,982 | 348,129 | 446,192 | |
Cost of services (exclusive of items shown separately below) | 48,784 | 72,737 | 112,035 | 139,889 | |
Depreciation, depletion, amortization and accretion | 49,729 | 47,344 | 98,813 | 92,361 | |
General and administrative expenses | 31,129 | 38,953 | 71,089 | 80,113 | |
Reduction in value of assets | 15,797 | | 15,797 | | |
Income from operations | 3,231 | 66,948 | 50,395 | 133,829 | |
Income (loss) from continuing operations before income taxes | 3,231 | 66,948 | 50,395 | 133,829 | |
Identifiable Assets | 1,343,080 | | 1,343,080 | | $ 1,304,110 |
Unallocated [Member] | | | | | |
Segment Reporting Information [Line Items] | | | | | |
Interest income (expense), net | (25,437) | (24,958) | (49,298) | (49,204) | |
Other Nonoperating Income (Expense) | (6,524) | 606 | (7,495) | 571 | |
Income (loss) from continuing operations before income taxes | $ (31,961) | $ (24,352) | $ (56,793) | $ (48,633) | |