Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Disaggregation of Revenue [Line Items]
Revenues	$ 188,422	$ 180,898
South Texas
Disaggregation of Revenue [Line Items]
Revenues	103,288	104,387
East Texas
Disaggregation of Revenue [Line Items]
Revenues	7,030	7,576
Central Texas
Disaggregation of Revenue [Line Items]
Revenues	10,842	14,028
West Texas
Disaggregation of Revenue [Line Items]
Revenues	67,262	54,907
Well Servicing
Disaggregation of Revenue [Line Items]
Revenues	91,521	83,035
Well Servicing | South Texas
Disaggregation of Revenue [Line Items]
Revenues	64,336	41,505
Well Servicing | East Texas
Disaggregation of Revenue [Line Items]
Revenues	5,089	4,536
Well Servicing | Central Texas
Disaggregation of Revenue [Line Items]
Revenues	0	0
Well Servicing | West Texas
Disaggregation of Revenue [Line Items]
Revenues	22,096	36,994
Coiled Tubing
Disaggregation of Revenue [Line Items]
Revenues	52,335	39,572
Coiled Tubing | South Texas
Disaggregation of Revenue [Line Items]
Revenues	16,652	34,137
Coiled Tubing | East Texas
Disaggregation of Revenue [Line Items]
Revenues	0	0
Coiled Tubing | Central Texas
Disaggregation of Revenue [Line Items]
Revenues	0	0
Coiled Tubing | West Texas
Disaggregation of Revenue [Line Items]
Revenues	35,683	5,435
Fluid Logistics
Disaggregation of Revenue [Line Items]
Revenues	44,566	58,291
Fluid Logistics | South Texas
Disaggregation of Revenue [Line Items]
Revenues	22,300	28,745
Fluid Logistics | East Texas
Disaggregation of Revenue [Line Items]
Revenues	1,941	3,040
Fluid Logistics | Central Texas
Disaggregation of Revenue [Line Items]
Revenues	10,842	14,028
Fluid Logistics | West Texas
Disaggregation of Revenue [Line Items]
Revenues	$ 9,483	$ 12,478