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Goodwill and Intangible Assets - Additional Information (Detail) (USD $)
 1 Months Ended 12 Months Ended
Oct. 31, 2010
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Goodwill and Intangible Assets Disclosure [Line Items]        
Accumulated impairment losses   $ 0 $ 0  
Amortization expense   4,110,000 4,110,000 1,027,000
Non-compete Agreement
        
Goodwill and Intangible Assets Disclosure [Line Items]        
Contract term 3 years      
Amortization period (in years)   3 years    
Amortization expense   467,000 467,000 116,000
Customer Relationships
        
Goodwill and Intangible Assets Disclosure [Line Items]        
Amortization period (in years)   7 years    
Amortization expense   3,600,000 3,600,000 910,000
Pressure Pumping
        
Goodwill and Intangible Assets Disclosure [Line Items]        
Goodwill expected to be deductible for tax purposes     $ 53,200,000