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v3.20.2

Business Segments - Depreciation, Depletion, Amortization and Impairment (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019
Segment Reporting Information [Line Items] |  |  |  |
Depreciation, depletion, amortization and impairment | $ 173,085 | $ 208,688 | $ 359,882 | $ 423,098
Corporate |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Depreciation, depletion, amortization and impairment | 1,491 | 1,774 | 3,499 | 3,577
Operating Segments | Contract Drilling |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Depreciation, depletion, amortization and impairment | 115,130 | 128,402 | 226,568 | 258,719
Operating Segments | Pressure Pumping |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Depreciation, depletion, amortization and impairment | 38,811 | 56,185 | 81,482 | 116,320
Operating Segments | Directional Drilling |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Depreciation, depletion, amortization and impairment | 9,677 | 10,870 | 20,098 | 21,237
Other Operations |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Depreciation, depletion, amortization and impairment | $ 7,976 | $ 11,457 | $ 28,235 | $ 23,245

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