REVENUE FROM CONTRACTS WITH CUSTOMERS - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Disaggregation of Revenue [Line Items]
Total revenues	$ 386,128	$ 353,398
Contract services
Disaggregation of Revenue [Line Items]
Total revenues	284,049	263,241
Aftermarket services
Disaggregation of Revenue [Line Items]
Total revenues	83,621	72,928
Equipment rentals
Disaggregation of Revenue [Line Items]
Total revenues	17,209	14,865
Equipment sales
Disaggregation of Revenue [Line Items]
Total revenues	1,249	2,364
U.S.
Disaggregation of Revenue [Line Items]
Total revenues	355,113	310,312
U.S. | Contract services
Disaggregation of Revenue [Line Items]
Total revenues	260,397	227,542
U.S. | Aftermarket services
Disaggregation of Revenue [Line Items]
Total revenues	80,773	71,445
U.S. | Equipment rentals
Disaggregation of Revenue [Line Items]
Total revenues	13,267	9,380
U.S. | Equipment sales
Disaggregation of Revenue [Line Items]
Total revenues	676	1,945
International
Disaggregation of Revenue [Line Items]
Total revenues	31,015	43,086
International | Contract services
Disaggregation of Revenue [Line Items]
Total revenues	23,652	35,699
International | Aftermarket services
Disaggregation of Revenue [Line Items]
Total revenues	2,848	1,483
International | Equipment rentals
Disaggregation of Revenue [Line Items]
Total revenues	3,942	5,485
International | Equipment sales
Disaggregation of Revenue [Line Items]
Total revenues	$ 573	$ 419