Segment Data - Reportable Segments (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Revenue, Major Customer [Line Items]
Revenues	$ 101,946	$ 216,412	$ 266,496	$ 427,885
Operating income (loss)	(30,539)	10,914	(36,425)	16,593
Corporate office
Revenue, Major Customer [Line Items]
Operating income (loss)	(6,485)	(10,546)	(13,165)	(22,279)
Fluids systems
Revenue, Major Customer [Line Items]
Revenues	74,662	172,544	207,467	333,197
Fluids systems | Operating segments
Revenue, Major Customer [Line Items]
Operating income (loss)	(25,059)	12,184	(27,327)	16,058
Mats and integrated services
Revenue, Major Customer [Line Items]
Revenues	27,284	43,868	59,029	94,688
Mats and integrated services | Operating segments
Revenue, Major Customer [Line Items]
Operating income (loss)	$ 1,005	$ 9,276	$ 4,067	$ 22,814