Segment Data - Reportable Segments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Revenue, Major Customer [Line Items]
Revenues	$ 96,424	$ 202,763	$ 362,920	$ 630,648
Operating income (loss)	(25,692)	6,288	(62,117)	22,881
Corporate office
Revenue, Major Customer [Line Items]
Operating income (loss)	(6,596)	(9,654)	(19,761)	(31,933)
Fluids systems
Revenue, Major Customer [Line Items]
Revenues	67,711	152,547	275,178	485,744
Fluids systems | Operating segments
Revenue, Major Customer [Line Items]
Operating income (loss)	(18,957)	5,893	(46,284)	21,951
Mats and integrated services
Revenue, Major Customer [Line Items]
Revenues	28,713	50,216	87,742	144,904
Mats and integrated services | Operating segments
Revenue, Major Customer [Line Items]
Operating income (loss)	$ (139)	$ 10,049	$ 3,928	$ 32,863