BUSINESS SEGMENT INFORMATION (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Segment information:
Total revenues	$ 415,858	$ 375,507	$ 892,526	$ 660,131
Operating Segments
Segment information:
Total revenues	415,858	375,507	892,526	660,131
Technical Services
Segment information:
Total revenues	390,018	356,103	842,009	622,452
Technical Services | Pressure Pumping
Segment information:
Total revenues	209,820	194,641	474,621	314,539
Technical Services | Downhole Tools
Segment information:
Total revenues	101,589	89,927	208,993	170,997
Technical Services | Coiled Tubing
Segment information:
Total revenues	38,355	36,315	78,421	63,165
Technical Services | Nitrogen
Segment information:
Total revenues	12,719	10,789	24,816	18,392
Technical Services | Snubbing
Segment information:
Total revenues	7,672	7,025	14,763	13,237
Technical Services | All other
Segment information:
Total revenues	19,863	17,406	40,395	42,122
Support Services
Segment information:
Total revenues	25,840	19,404	50,517	37,679
Support Services | Rental Tools
Segment information:
Total revenues	18,334	14,314	36,010	27,377
Support Services | All other
Segment information:
Total revenues	$ 7,506	$ 5,090	$ 14,507	$ 10,302