XML 64 R54.htm IDEA: XBRL DOCUMENT v3.7.0.1
Goodwill and Intangible Assets - Additional Information (Detail) - USD ($)
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Dec. 31, 2016
Goodwill And Intangible Assets Disclosure [Line Items]      
Accumulated impairment losses $ 0   $ 0
Pressure Pumping      
Goodwill And Intangible Assets Disclosure [Line Items]      
Amortization period (in years) 7 years    
Amortization expense $ 911,000 $ 911,000