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Business Segments (Tables) | 12 Months Ended
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Dec. 31, 2017
Segment Reporting [Abstract] |
Business Segments - Financial Information | The following tables summarize selected financial information relating to the Company’s business segments (in thousands):
|  | Year Ended December 31, |
|  | 2017 |  |  | 2016 |  |  | 2015 |
Revenues: |  |  |  |  |  |  |  |  |  |  |  |
Contract drilling |  | $ | 1,041,492 |  |  | $ | 544,196 |  |  | $ | 1,155,565 |
Pressure pumping |  |  | 1,200,311 |  |  |  | 354,070 |  |  |  | 712,454 |
Directional drilling |  |  | 45,580 |  |  |  | — |  |  |  | — |
Other operations(a) |  |  | 76,781 |  |  |  | 18,299 |  |  |  | 24,931 |
Elimination of intercompany revenues(b) |  |  | (7,480 | ) |  |  | (699 | ) |  |  | (1,673 | )
Total revenues |  | $ | 2,356,684 |  |  | $ | 915,866 |  |  | $ | 1,891,277 |
Income (loss) before income taxes: |  |  |  |  |  |  |  |  |  |  |  |
Contract drilling |  | $ | (171,897 | ) |  | $ | (235,858 | ) |  | $ | (78,970 | )
Pressure pumping |  |  | 21,028 |  |  |  | (176,628 | ) |  |  | (254,998 | )
Directional drilling |  |  | (21 | ) |  |  | — |  |  |  | — |
Other operations |  |  | (20,813 | ) |  |  | (3,391 | ) |  |  | (14,269 | )
Corporate |  |  | (152,792 | ) |  |  | (54,672 | ) |  |  | (57,088 | )
Other operating income (expense), net (c) |  |  | 31,957 |  |  |  | 14,323 |  |  |  | (1,647 | )
Interest income |  |  | 1,866 |  |  |  | 327 |  |  |  | 964 |
Interest expense |  |  | (37,472 | ) |  |  | (40,366 | ) |  |  | (36,475 | )
Other |  |  | 343 |  |  |  | 69 |  |  |  | 34 |
Loss before income taxes |  | $ | (327,801 | ) |  | $ | (496,196 | ) |  | $ | (442,449 | )
Identifiable assets: |  |  |  |  |  |  |  |  |  |  |  |
Contract drilling |  | $ | 3,931,994 |  |  | $ | 3,032,819 |  |  | $ | 3,457,044 |
Pressure pumping |  |  | 1,209,424 |  |  |  | 653,630 |  |  |  | 813,704 |
Directional drilling |  |  | 301,275 |  |  |  | — |  |  |  | — |
Other operations |  |  | 172,094 |  |  |  | 48,885 |  |  |  | 38,726 |
Corporate(d) |  |  | 144,069 |  |  |  | 36,957 |  |  |  | 155,574 |
Total assets |  | $ | 5,758,856 |  |  | $ | 3,772,291 |  |  | $ | 4,465,048 |
Depreciation, depletion, amortization and impairment: |  |  |  |  |  |  |  |  |  |  |  |
Contract drilling |  | $ | 538,891 |  |  | $ | 467,974 |  |  | $ | 618,434 |
Pressure pumping |  |  | 198,006 |  |  |  | 184,872 |  |  |  | 214,552 |
Directional drilling |  |  | 9,347 |  |  |  | — |  |  |  | — |
Other operations |  |  | 29,402 |  |  |  | 10,114 |  |  |  | 26,301 |
Corporate |  |  | 7,695 |  |  |  | 5,474 |  |  |  | 5,472 |
Total depreciation, depletion, amortization and impairment |  | $ | 783,341 |  |  | $ | 668,434 |  |  | $ | 864,759 |
Capital expenditures: |  |  |  |  |  |  |  |  |  |  |  |
Contract drilling |  | $ | 354,425 |  |  | $ | 72,508 |  |  | $ | 527,054 |
Pressure pumping |  |  | 171,436 |  |  |  | 39,584 |  |  |  | 197,577 |
Directional drilling |  |  | 7,795 |  |  |  | — |  |  |  | — |
Other operations |  |  | 31,547 |  |  |  | 6,116 |  |  |  | 16,625 |
Corporate |  |  | 1,884 |  |  |  | 1,591 |  |  |  | 2,520 |
Total capital expenditures |  | $ | 567,087 |  |  | $ | 119,799 |  |  | $ | 743,776 |
(a) | Other operations includes the Company’s oilfield rental tools business, pipe handling components and related technology business, the oil and natural gas working interests and the Middle East/North Africa activities.
(b) | In 2017, intercompany revenues consists of contract drilling and revenues from other operations for services provided to contract drilling, pressure pumping and within other operations. In 2016, intercompany revenues consists of contract drilling and revenues within other operations. In 2015, intercompany revenues only consisted of contract drilling.
(c) | Other operating income (expense), net includes net gains or losses associated with the disposal of assets relate to corporate strategy decisions of the executive management group. Accordingly, the related gains or losses have been separately presented and excluded from the results of specific segments. This caption also includes expenses related to certain legal settlements net of insurance reimbursements.
(d) | Corporate assets primarily include cash on hand, income tax receivables, certain property and equipment, and certain deferred tax assets.

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- Definition Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8906-108599 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8813-108599 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8721-108599 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8736-108599 + Details
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