Segment Data - Disaggregated Revenues, Geographic (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Disaggregation of Revenue [Line Items]
Revenues	$ 101,946	$ 216,412	$ 266,496	$ 427,885
Fluids systems
Disaggregation of Revenue [Line Items]
Revenues	74,662	172,544	207,467	333,197
Fluids systems | North America
Disaggregation of Revenue [Line Items]
Revenues	45,736	122,142	132,656	238,467
Fluids systems | United States
Disaggregation of Revenue [Line Items]
Revenues	42,670	117,154	116,330	220,213
Fluids systems | Canada
Disaggregation of Revenue [Line Items]
Revenues	3,066	4,988	16,326	18,254
Fluids systems | Total International
Disaggregation of Revenue [Line Items]
Revenues	28,926	50,402	74,811	94,730
Fluids systems | EMEA
Disaggregation of Revenue [Line Items]
Revenues	26,036	44,455	68,173	82,220
Fluids systems | Other
Disaggregation of Revenue [Line Items]
Revenues	$ 2,890	$ 5,947	$ 6,638	$ 12,510