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Business Segments - Revenues (Detail) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2019
Sep. 30, 2019
Jun. 30, 2019
Mar. 31, 2019
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Segment Reporting Revenue Reconciling Item [Line Items]                      
Total revenues $ 492,297 $ 598,452 $ 675,765 $ 704,171 $ 795,937 $ 867,478 $ 854,418 $ 809,164 $ 2,470,685 $ 3,326,997 $ 2,356,684
Contract Drilling                      
Segment Reporting Revenue Reconciling Item [Line Items]                      
Total revenues                 1,308,350 1,430,492 1,040,033
Pressure Pumping                      
Segment Reporting Revenue Reconciling Item [Line Items]                      
Total revenues                 868,694 1,573,396 1,200,311
Directional Drilling                      
Segment Reporting Revenue Reconciling Item [Line Items]                      
Total revenues                 188,786 209,275 45,580
Operating Segments | Contract Drilling                      
Segment Reporting Revenue Reconciling Item [Line Items]                      
Total revenues                 1,309,988 1,432,012 1,041,492
Operating Segments | Pressure Pumping                      
Segment Reporting Revenue Reconciling Item [Line Items]                      
Total revenues                 868,694 1,573,396 1,200,311
Operating Segments | Directional Drilling                      
Segment Reporting Revenue Reconciling Item [Line Items]                      
Total revenues                 188,786 209,275 45,580
Other Operations                      
Segment Reporting Revenue Reconciling Item [Line Items]                      
Total revenues [1]                 122,885 131,028 76,781
Intersegment Elimination                      
Segment Reporting Revenue Reconciling Item [Line Items]                      
Total revenues [2]                 $ (19,668) $ (18,714) $ (7,480)
[1] Other operations includes the Company’s oilfield rentals business, drilling equipment service business, the electrical controls and automation business, the oil and natural gas working interests and Middle East organizational activities.
[2] Intercompany revenues consists of contract drilling and revenues from other operations for services provided to contract drilling, pressure pumping and within other operations.