Business Segments - Capital Expenditures (Detail) - USD ($) $ in Thousands |
3 Months Ended | |
|---|---|---|
Mar. 31, 2021 |
Mar. 31, 2020 |
|
| Segment Reporting Information [Line Items] | ||
| Capital expenditures | $ 18,523 | $ 71,928 |
| Corporate | ||
| Segment Reporting Information [Line Items] | ||
| Capital expenditures | 180 | 931 |
| Operating Segments | Contract Drilling | ||
| Segment Reporting Information [Line Items] | ||
| Capital expenditures | 11,427 | 49,445 |
| Operating Segments | Pressure Pumping | ||
| Segment Reporting Information [Line Items] | ||
| Capital expenditures | 4,068 | 14,280 |
| Operating Segments | Directional Drilling | ||
| Segment Reporting Information [Line Items] | ||
| Capital expenditures | 104 | 2,008 |
| Other Operations | ||
| Segment Reporting Information [Line Items] | ||
| Capital expenditures | $ 2,744 | $ 5,264 |