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Business Segments - Revenues (Detail) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2018 | Mar. 31, 2017
Segment Reporting Revenue Reconciling Item [Line Items] |  |  |
Total revenues |  | $ 809,164 | $ 305,175
Other Operations |  |  |
Segment Reporting Revenue Reconciling Item [Line Items] |  |  |
Total revenues | [1] | 29,653 | 5,618
Operating Segments | Contract Drilling |  |  |
Segment Reporting Revenue Reconciling Item [Line Items] |  |  |
Total revenues |  | 328,153 | 159,055
Operating Segments | Pressure Pumping |  |  |
Segment Reporting Revenue Reconciling Item [Line Items] |  |  |
Total revenues |  | 406,784 | 141,174
Operating Segments | Directional Drilling |  |  |
Segment Reporting Revenue Reconciling Item [Line Items] |  |  |
Total revenues |  | 48,616 |
Intersegment Elimination |  |  |
Segment Reporting Revenue Reconciling Item [Line Items] |  |  |
Total revenues | [2] | $ (4,042) | $ (672)
[1] | Other operations includes the Company’s oilfield rentals business, pipe handling components and related technology business, oil and natural gas working interests and Middle East/North Africa activities.
[2] | Intercompany revenues consists of contract drilling intercompany revenues for services provided to other operations and also includes revenues from other operations for services provided to contract drilling, pressure pumping and within other operations.

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