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Gross Carrying Amount and Accumulated Amortization of Intangible Assets (Detail) - Customer Relationships - Pressure Pumping - USD ($)
$ in Thousands
Mar. 31, 2017
Dec. 31, 2016
Acquired Finite Lived Intangible Assets [Line Items]    
Gross Carrying Amount $ 25,500 $ 25,500
Accumulated Amortization (23,679) (22,768)
Net Carrying Amount $ 1,821 $ 2,732