SIGNIFICANT ACCOUNTING POLICIES (Details) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2011
Accounting Policies [Abstract]
Allowance for doubtful accounts	$ 400,000	$ 600,000	$ 800,000
Loss on disposal of assets	39,086,000	22,529,000	21,268,000
Property, Plant and Equipment [Line Items]
Property and equipment impairment expense	0	6,305,000	36,609,000
Goodwill	9,425,000	9,425,000	10,602,000
Goodwill impairment expense	0	1,177,000	0
Advertising expense	800,000	400,000	900,000
Amortization of deferred debt issuance costs	3,403,000	2,091,000	1,351,000
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	0
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	0
All Other
Accounting Policies [Abstract]
Loss on disposal of assets	1,027,000	(1,161,000)	55,000
Property, Plant and Equipment [Line Items]
Property and equipment impairment expense		6,305,000	28,629,000
Goodwill	0	0	1,177,000
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	38,059,000	23,690,000	21,213,000
Property, Plant and Equipment [Line Items]
Property and equipment impairment expense		0	7,980,000
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
Minimum | Vehicles
Property, Plant and Equipment [Line Items]
Estimated useful lives	P1Y
Minimum | Equipment
Property, Plant and Equipment [Line Items]
Estimated useful lives	P1Y
Minimum | Leasehold improvements
Property, Plant and Equipment [Line Items]
Estimated useful lives	P5Y
Maximum | Vehicles
Property, Plant and Equipment [Line Items]
Estimated useful lives	P5Y
Maximum | Equipment
Property, Plant and Equipment [Line Items]
Estimated useful lives	P20Y
Maximum | Leasehold improvements
Property, Plant and Equipment [Line Items]
Estimated useful lives	P20Y