Segment Data (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Revenue, Major Customer [Line Items]
Revenues	$ 158,691	$ 114,544
Operating Income (Loss)	3,746	(18,825)
Employee termination costs		3,436
Fluids systems
Revenue, Major Customer [Line Items]
Revenues	136,050	98,651
Operating Income (Loss)	6,352	(15,207)
Employee termination costs		3,181
Mats and integrated services
Revenue, Major Customer [Line Items]
Revenues	22,641	15,893
Operating Income (Loss)	6,402	3,736
Employee termination costs		159
Corporate office
Revenue, Major Customer [Line Items]
Operating Income (Loss)	$ (9,008)	(7,354)
Employee termination costs		96
Cost of revenues
Revenue, Major Customer [Line Items]
Employee termination costs		2,705
Selling, general and administrative expenses
Revenue, Major Customer [Line Items]
Employee termination costs		$ 731