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Acquisitions - Additional Information (Detail) shares in Thousands, $ in Thousands |  |  |  | 12 Months Ended |
--- | --- | --- | --- | --- | ---
Oct. 11, 2017 USD ($) shares | Apr. 20, 2017 USD ($) Rigs hp shares | Jan. 27, 2017 USD ($) | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($)
Business Acquisition [Line Items] |  |  |  |  |  |
Goodwill |  |  |  | $ 410,756 | $ 611,473 | $ 86,234
Increase in goodwill due to measurement period adjustments |  |  |  | 1,000 |  |
Merger and integration related costs |  |  |  | 2,738 | 74,451 |
Contract Drilling |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Goodwill |  |  |  | 395,060 | 395,060 | 86,234
Increase in goodwill due to measurement period adjustments |  |  |  | 0 |  |
Pressure Pumping |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Goodwill |  |  |  | 0 | 121,444 | $ 0
Increase in goodwill due to measurement period adjustments |  |  |  | $ 0 |  |
Seventy Seven Energy Inc. |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Shares of common stock exchange in business acquisition | shares |  | 46,298 |  |  |  |
Repayment of outstanding debt |  | $ 472,000 | $ 472,000 |  |  |
Merger date |  |  |  | Apr. 20, 2017 |  |
Total fair value of the consideration transferred |  | $ 1,511,396 |  |  |  |
Number of drilling rigs acquired | Rigs |  | 91 |  |  |  |
Number of horsepower of fracturing equipment | hp |  | 500,000 |  |  |  |
Goodwill |  | $ 436,554 |  |  |  |
Merger and integration related costs |  |  |  |  | $ 36,700 |
Seventy Seven Energy Inc. | Contract Drilling |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Goodwill |  | 309,000 |  |  |  |
Seventy Seven Energy Inc. | Pressure Pumping |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Goodwill |  | 121,000 |  |  |  |
Seventy Seven Energy Inc. | Oilfield Rentals |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Goodwill |  | $ 6,300 |  |  |  |
Seventy Seven Energy Inc. | APEX Class Rigs |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Number of rigs | Rigs |  | 36 |  |  |  |
MS Directional |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Shares of common stock exchange in business acquisition | shares | 8,798 |  |  |  |  |
Repayment of outstanding debt | $ 63,000 |  |  |  |  |
Merger date |  |  |  | Oct. 11, 2017 |  |
Total fair value of the consideration transferred | 257,275 |  |  |  |  |
Goodwill | 89,685 |  |  |  |  |
Aggregate consideration paid by the company | 69,800 |  |  |  |  |
Business acquisition, description of acquired entity |  |  |  | MS Directional is a leading directional drilling services company in the United States, with operations in most major producing onshore oil and gas basins. MS Directional provides a comprehensive suite of directional drilling services, including directional drilling, downhole performance motors, motor rentals, directional surveying, measurement-while-drilling, and wireline steering tools. |  |
Increase in goodwill due to measurement period adjustments | $ 1,000 |  |  |  |  |

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