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Business Segments - Depreciation, Depletion, Amortization and Impairment (Detail) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2020 | Mar. 31, 2019
Segment Reporting Information [Line Items] |  |
Depreciation, depletion, amortization and impairment | $ 186,797 | $ 214,410
Corporate |  |
Segment Reporting Information [Line Items] |  |
Depreciation, depletion, amortization and impairment | 2,008 | 1,803
Operating Segments | Contract Drilling |  |
Segment Reporting Information [Line Items] |  |
Depreciation, depletion, amortization and impairment | 111,438 | 130,317
Operating Segments | Pressure Pumping |  |
Segment Reporting Information [Line Items] |  |
Depreciation, depletion, amortization and impairment | 42,671 | 60,135
Operating Segments | Directional Drilling |  |
Segment Reporting Information [Line Items] |  |
Depreciation, depletion, amortization and impairment | 10,421 | 10,367
Other Operations |  |
Segment Reporting Information [Line Items] |  |
Depreciation, depletion, amortization and impairment | $ 20,259 | $ 11,788

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