Annual report pursuant to Section 13 and 15(d)

SIGNIFICANT ACCOUNTING POLICIES (Details)

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SIGNIFICANT ACCOUNTING POLICIES (Details) - USD ($)
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2014
Dec. 31, 2011
Jan. 01, 2019
Accounting Policies [Abstract]            
Allowance for doubtful accounts $ 100,000 $ 400,000 $ 600,000      
Loss on disposal of assets 59,220,000 39,086,000 22,529,000      
Property, Plant and Equipment [Line Items]            
Accrued revenue 18,000,000 24,800,000        
Property and equipment impairment expense 0 0 6,305,000      
Goodwill 9,425,000 9,425,000 9,425,000      
Goodwill impairment expense 0 0 1,177,000      
Premiums Receivable, Allowance for Doubtful Accounts, Additions for Charges to Expense 100,000          
Allowance for Doubtful Accounts Receivable, Recoveries 400,000          
Advertising expense 1,300,000 800,000 400,000      
Amortization of deferred debt issuance costs 403,000 3,403,000 2,091,000      
Accounting Standards Update 2016-02            
Property, Plant and Equipment [Line Items]            
Operating lease, right-of-use asset           $ 10,000,000
Operating lease, liability           $ 10,000,000
Blackrock Drilling, Inc            
Property, Plant and Equipment [Line Items]            
Consideration transferred       $ 1,800,000    
Property, plant, and equipment       600,000    
Goodwill       $ 1,200,000    
Goodwill impairment expense     1,200,000      
Technology Stimulation Services, LLC            
Property, Plant and Equipment [Line Items]            
Consideration transferred         $ 24,400,000  
Property, plant, and equipment         15,000,000  
Goodwill         $ 9,400,000  
Goodwill impairment expense   0 0      
All Other            
Accounting Policies [Abstract]            
Loss on disposal of assets (742,000) 1,027,000 (1,161,000)      
Property, Plant and Equipment [Line Items]            
Property and equipment impairment expense     6,305,000      
Goodwill 0 0 0      
Goodwill impairment expense     1,177,000      
All Other | Blackrock Drilling, Inc            
Property, Plant and Equipment [Line Items]            
Goodwill impairment expense     1,200,000      
Pressure Pumping            
Accounting Policies [Abstract]            
Loss on disposal of assets 59,962,000 38,059,000 23,690,000      
Property, Plant and Equipment [Line Items]            
Property and equipment impairment expense     0      
Goodwill 9,425,000 $ 9,425,000 9,425,000      
Goodwill impairment expense     $ 0      
Pressure Pumping | Technology Stimulation Services, LLC            
Property, Plant and Equipment [Line Items]            
Goodwill $ 9,400,000          
Building | Minimum            
Property, Plant and Equipment [Line Items]            
Estimated useful lives P5Y          
Building | Maximum            
Property, Plant and Equipment [Line Items]            
Estimated useful lives P30Y          
Vehicles | Minimum            
Property, Plant and Equipment [Line Items]            
Estimated useful lives P1Y          
Vehicles | Maximum            
Property, Plant and Equipment [Line Items]            
Estimated useful lives P5Y          
Equipment | Minimum            
Property, Plant and Equipment [Line Items]            
Estimated useful lives P1Y          
Equipment | Maximum            
Property, Plant and Equipment [Line Items]            
Estimated useful lives P20Y          
Leasehold improvements | Minimum            
Property, Plant and Equipment [Line Items]            
Estimated useful lives P5Y          
Leasehold improvements | Maximum            
Property, Plant and Equipment [Line Items]            
Estimated useful lives P20Y