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Related Parties (Narrative) (Details)
6 Months Ended
Jun. 30, 2015
USD ($)
vendor
Director
Jun. 30, 2014
USD ($)
Related Party Transaction [Line Items]    
Outstanding purchase commitments $ 40,600,000  
Affiliated entity    
Related Party Transaction [Line Items]    
Purchases 1,200,000 $ 600,000
Outstanding payables $ 200,000 500,000
Number of vendors | vendor 2  
Global Energy Services Operating, LLC | Affiliated entity    
Related Party Transaction [Line Items]    
Number of directors | Director 1  
Ownership percentage 36.00%  
Immediate Family Member of Management or Principal Owner    
Related Party Transaction [Line Items]    
Number of Entities, immediate Family Member, Minority Owner 1  
Vendor One | Purchases of Oilfield Equipment and Related Supplies [Member] | Affiliated entity    
Related Party Transaction [Line Items]    
Purchases $ 600,000 500,000
Outstanding payables 100,000 600,000
Vendor Two | Purchases of Oilfield Equipment and Related Supplies [Member] | Affiliated entity    
Related Party Transaction [Line Items]    
Purchases 0 0
Outstanding payables 0 $ 0
Vendor Two | Vendor Two | Affiliated entity    
Related Party Transaction [Line Items]    
Outstanding purchase commitments $ 30,000