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Business Segments - Capital Expenditures (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016
Segment Reporting Information [Line Items] |  |  |  |
Capital expenditures | $ 118,350 | $ 30,533 | $ 186,790 | $ 51,834
Other Operations |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Capital expenditures | 8,017 | 1,692 | 12,369 | 3,220
Corporate |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Capital expenditures | 227 | 491 | 681 | 832
Operating Segments | Contract Drilling |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Capital expenditures | 71,326 | 16,570 | 115,547 | 28,450
Operating Segments | Pressure Pumping |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Capital expenditures | $ 38,780 | $ 11,780 | $ 58,193 | $ 19,332

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- Definition The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3213-108585 + Details
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