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Gross Carrying Amount and Accumulated Amortization of Intangible Assets (Detail) - Customer Relationships - Pressure Pumping - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Acquired Finite Lived Intangible Assets [Line Items]    
Gross Carrying Amount $ 25,500 $ 25,500
Accumulated Amortization (22,768) (19,125)
Net Carrying Amount $ 2,732 $ 6,375