Segment Data - Disaggregated Revenues, Geographic (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Disaggregation of Revenue [Line Items]
Revenues	$ 96,424	$ 202,763	$ 362,920	$ 630,648
Fluids systems
Disaggregation of Revenue [Line Items]
Revenues	67,711	152,547	275,178	485,744
Fluids systems | North America
Disaggregation of Revenue [Line Items]
Revenues	42,275	106,169	174,931	344,636
Fluids systems | United States
Disaggregation of Revenue [Line Items]
Revenues	40,314	98,140	156,644	318,353
Fluids systems | Canada
Disaggregation of Revenue [Line Items]
Revenues	1,961	8,029	18,287	26,283
Fluids systems | Total International
Disaggregation of Revenue [Line Items]
Revenues	25,436	46,378	100,247	141,108
Fluids systems | EMEA
Disaggregation of Revenue [Line Items]
Revenues	23,207	41,126	91,380	123,346
Fluids systems | Other
Disaggregation of Revenue [Line Items]
Revenues	$ 2,229	$ 5,252	$ 8,867	$ 17,762