Segment Data - Disaggregated Revenues, Geographic (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Disaggregation of Revenue [Line Items]
Revenues	$ 164,550	$ 211,473
Fluids systems
Disaggregation of Revenue [Line Items]
Revenues	132,805	160,653
Fluids systems | North America
Disaggregation of Revenue [Line Items]
Revenues	86,920	116,325
Fluids systems | United States
Disaggregation of Revenue [Line Items]
Revenues	73,660	103,059
Fluids systems | Canada
Disaggregation of Revenue [Line Items]
Revenues	13,260	13,266
Fluids systems | Total International
Disaggregation of Revenue [Line Items]
Revenues	45,885	44,328
Fluids systems | EMEA
Disaggregation of Revenue [Line Items]
Revenues	42,137	37,765
Fluids systems | Other
Disaggregation of Revenue [Line Items]
Revenues	$ 3,748	$ 6,563