Revenue from Contracts with Customers Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Disaggregation of Revenue [Line Items]
Revenues from external customers	$ 102,326	$ 96,070	$ 179,650	$ 228,773
UNITED STATES
Disaggregation of Revenue [Line Items]
Revenues from external customers	60,692	54,969	114,219	147,310
International
Disaggregation of Revenue [Line Items]
Revenues from external customers	41,634	41,101	65,431	81,463
Completion Fluids & Products Division
Disaggregation of Revenue [Line Items]
Revenues from external customers	64,607	71,346	111,128	146,583
Completion Fluids & Products Division | UNITED STATES
Disaggregation of Revenue [Line Items]
Revenues from external customers	25,229	32,102	49,824	70,060
Completion Fluids & Products Division | International
Disaggregation of Revenue [Line Items]
Revenues from external customers	39,378	39,244	61,304	76,523
Water & Flowback Services Division
Disaggregation of Revenue [Line Items]
Revenues from external customers	37,719	24,724	68,522	82,190
Water & Flowback Services Division | UNITED STATES
Disaggregation of Revenue [Line Items]
Revenues from external customers	35,463	22,867	64,395	77,250
Water & Flowback Services Division | International
Disaggregation of Revenue [Line Items]
Revenues from external customers	$ 2,256	$ 1,857	$ 4,127	$ 4,940