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Business Segments - Revenues (Detail) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Segment Reporting Revenue Reconciling Item [Line Items]        
Total revenues $ 357,885 $ 207,141 $ 890,588 $ 903,448
Contract Drilling        
Segment Reporting Revenue Reconciling Item [Line Items]        
Total revenues 157,925 115,054 433,158 553,552
Pressure Pumping        
Segment Reporting Revenue Reconciling Item [Line Items]        
Total revenues 152,634 71,973 340,464 256,613
Directional Drilling        
Segment Reporting Revenue Reconciling Item [Line Items]        
Total revenues 31,728 10,271 76,267 56,498
Operating Segments | Contract Drilling        
Segment Reporting Revenue Reconciling Item [Line Items]        
Total revenues 158,154 115,105 434,080 554,421
Operating Segments | Pressure Pumping        
Segment Reporting Revenue Reconciling Item [Line Items]        
Total revenues 152,634 71,973 340,464 256,613
Operating Segments | Directional Drilling        
Segment Reporting Revenue Reconciling Item [Line Items]        
Total revenues 31,728 10,271 76,267 56,498
Other Operations        
Segment Reporting Revenue Reconciling Item [Line Items]        
Total revenues [1] 20,744 11,756 53,561 46,061
Intersegment Elimination | Contract Drilling        
Segment Reporting Revenue Reconciling Item [Line Items]        
Total revenues [2] (229) (51) (922) (869)
Intersegment Elimination | Other Operations        
Segment Reporting Revenue Reconciling Item [Line Items]        
Total revenues [2] $ (5,146) $ (1,913) $ (12,862) $ (9,276)
[1] Other operations includes our oilfield rentals business, drilling equipment service business, the electrical controls and automation business and the oil and natural gas working interests.
[2] Intercompany revenues consist of revenues from contract drilling for services provided to our other operations, and revenues from other operations for services provided to contract drilling, pressure pumping and within other operations. These revenues are generally based on estimated external selling prices and are eliminated during consolidation.