Goodwill (Details) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2016 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)
Goodwill [Line Items]
Impairment of goodwill	$ 106,200	$ 0	$ 0	$ 106,205
Goodwill, Acquired During Period		19,223
Goodwill		25,859	6,636	6,636	$ 112,945
Completion Fluids & Products Division [Member]
Goodwill [Line Items]
Goodwill, Impaired, Accumulated Impairment Loss		$ 23,800
Water & Flowback Services [Member]
Goodwill [Line Items]
Number of Reporting Units		2
Goodwill, Acquired During Period		$ 19,223
Goodwill		25,859	6,636	6,636	20,543
Goodwill, Impaired, Accumulated Impairment Loss		111,800
Compression [Member]
Goodwill [Line Items]
Goodwill, Acquired During Period		0
Goodwill		0	$ 0	$ 0	$ 92,402
Goodwill, Impaired, Accumulated Impairment Loss		$ 231,800