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Business Segments - Revenues (Detail) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Segment Reporting Revenue Reconciling Item [Line Items]                      
Total revenues $ 787,334 $ 684,989 $ 579,186 $ 305,175 $ 246,887 $ 206,133 $ 193,907 $ 268,939 $ 2,356,684 $ 915,866 $ 1,891,277
Other Operations                      
Segment Reporting Revenue Reconciling Item [Line Items]                      
Total revenues [1]                 76,781 18,299 24,931
Operating Segments | Contract Drilling                      
Segment Reporting Revenue Reconciling Item [Line Items]                      
Total revenues                 1,041,492 544,196 1,155,565
Operating Segments | Pressure Pumping                      
Segment Reporting Revenue Reconciling Item [Line Items]                      
Total revenues                 1,200,311 354,070 712,454
Operating Segments | Directional Drilling                      
Segment Reporting Revenue Reconciling Item [Line Items]                      
Total revenues                 45,580    
Intersegment Elimination                      
Segment Reporting Revenue Reconciling Item [Line Items]                      
Total revenues [2]                 $ (7,480) $ (699) $ (1,673)
[1] Other operations includes the Company’s oilfield rental tools business, pipe handling components and related technology business, the oil and natural gas working interests and the Middle East/North Africa activities.
[2] In 2017, intercompany revenues consists of contract drilling and revenues from other operations for services provided to contract drilling, pressure pumping and within other operations. In 2016, intercompany revenues consists of contract drilling and revenues within other operations. In 2015, intercompany revenues only consisted of contract drilling.