Revenue from Contracts with Customers Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Disaggregation of Revenue [Line Items]
Revenues	$ 77,324	$ 132,704
UNITED STATES
Disaggregation of Revenue [Line Items]
Revenues	53,528	92,342
Non-US [Member]
Disaggregation of Revenue [Line Items]
Revenues	23,796	40,362
Completion Fluids & Products Division [Member]
Disaggregation of Revenue [Line Items]
Revenues	46,522	75,237
Completion Fluids & Products Division [Member] | UNITED STATES
Disaggregation of Revenue [Line Items]
Revenues	24,597	37,958
Completion Fluids & Products Division [Member] | Non-US [Member]
Disaggregation of Revenue [Line Items]
Revenues	21,925	37,279
Water & Flowback Services [Member]
Disaggregation of Revenue [Line Items]
Revenues	30,802	57,467
Water & Flowback Services [Member] | UNITED STATES
Disaggregation of Revenue [Line Items]
Revenues	28,931	54,384
Water & Flowback Services [Member] | Non-US [Member]
Disaggregation of Revenue [Line Items]
Revenues	$ 1,871	$ 3,083