Revenue from Contracts with Customers Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Disaggregation of Revenue [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 45,318		$ 45,318
Revenues	288,796	$ 260,072	532,524	$ 459,453
Remaining credits expected to be issued	4,200		4,200
UNITED STATES
Disaggregation of Revenue [Line Items]
Revenues	232,070	195,877	430,391	347,805
Non-US [Member]
Disaggregation of Revenue [Line Items]
Revenues	56,726	64,195	102,133	111,648
Completion Fluids & Products Division [Member]
Disaggregation of Revenue [Line Items]
Revenues	79,767	76,556	141,348	129,660
Completion Fluids & Products Division [Member] | UNITED STATES
Disaggregation of Revenue [Line Items]
Revenues	37,536	34,112	69,142	62,020
Completion Fluids & Products Division [Member] | Non-US [Member]
Disaggregation of Revenue [Line Items]
Revenues	42,231	42,444	72,206	67,640
Water & Flowback Services [Member]
Disaggregation of Revenue [Line Items]
Revenues	73,124	83,646	151,802	144,721
Water & Flowback Services [Member] | UNITED STATES
Disaggregation of Revenue [Line Items]
Revenues	68,412	70,838	141,611	117,877
Water & Flowback Services [Member] | Non-US [Member]
Disaggregation of Revenue [Line Items]
Revenues	4,712	12,808	10,191	26,844
Compression Division [Member]
Disaggregation of Revenue [Line Items]
Revenues	135,905	99,924	239,374	185,346
Compression Division [Member] | UNITED STATES
Disaggregation of Revenue [Line Items]
Revenues	126,122	90,927	219,638	167,907
Compression Division [Member] | Non-US [Member]
Disaggregation of Revenue [Line Items]
Revenues	9,783	8,997	19,736	17,439
Interdivision Eliminations [Member]
Disaggregation of Revenue [Line Items]
Revenues	0	(54)	0	(274)
Interdivision Eliminations [Member] | UNITED STATES
Disaggregation of Revenue [Line Items]
Revenues	0	0	0	1
Interdivision Eliminations [Member] | Non-US [Member]
Disaggregation of Revenue [Line Items]
Revenues	$ 0	$ (54)	$ 0	$ (275)