Revenue from Contracts with Customers Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Disaggregation of Revenue [Line Items]
Revenues	$ 243,728	$ 199,381
Revenue, Remaining Performance Obligation, Amount	24,567
Remaining credits expected to be issued	1,100
Completion Fluids & Products Division [Member]
Disaggregation of Revenue [Line Items]
Revenues	61,581	53,104
Water & Flowback Services [Member]
Disaggregation of Revenue [Line Items]
Revenues	78,678	61,075
Compression Division [Member]
Disaggregation of Revenue [Line Items]
Revenues	103,469	85,422
Interdivision Eliminations [Member]
Disaggregation of Revenue [Line Items]
Revenues	0	(220)
UNITED STATES
Disaggregation of Revenue [Line Items]
Revenues	198,322	151,929
UNITED STATES | Completion Fluids & Products Division [Member]
Disaggregation of Revenue [Line Items]
Revenues	31,606	27,909
UNITED STATES | Water & Flowback Services [Member]
Disaggregation of Revenue [Line Items]
Revenues	73,199	47,038
UNITED STATES | Compression Division [Member]
Disaggregation of Revenue [Line Items]
Revenues	93,517	76,980
UNITED STATES | Interdivision Eliminations [Member]
Disaggregation of Revenue [Line Items]
Revenues	0	2
Non-US [Member]
Disaggregation of Revenue [Line Items]
Revenues	45,406	47,452
Non-US [Member] | Completion Fluids & Products Division [Member]
Disaggregation of Revenue [Line Items]
Revenues	29,975	25,195
Non-US [Member] | Water & Flowback Services [Member]
Disaggregation of Revenue [Line Items]
Revenues	5,479	14,037
Non-US [Member] | Compression Division [Member]
Disaggregation of Revenue [Line Items]
Revenues	9,952	8,442
Non-US [Member] | Interdivision Eliminations [Member]
Disaggregation of Revenue [Line Items]
Revenues	$ 0	$ (222)