Business Segments - Depreciation, Depletion, Amortization and Impairment (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Segment Reporting Information [Line Items]
Depreciation	$ 121,553	$ 144,037	$ 238,491	$ 296,919
Operating Segments
Segment Reporting Information [Line Items]
Depreciation	1,273	1,492	2,662	2,994
Operating Segments | Contract Drilling
Segment Reporting Information [Line Items]
Depreciation, amortization and impairment	84,905	98,592	166,928	200,266
Operating Segments | Pressure Pumping
Segment Reporting Information [Line Items]
Depreciation, amortization and impairment	24,713	31,740	48,498	69,125
Operating Segments | Directional Drilling
Segment Reporting Information [Line Items]
Depreciation, amortization and impairment	3,859	6,594	7,203	13,091
Other Operations
Segment Reporting Information [Line Items]
Depreciation and amortization	$ 6,803	$ 5,619	$ 13,200	$ 11,443