DISCONTINUED OPERATIONS - Schedule of Discontinued Operations (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Major classes of line items constituting income (loss) from discontinued operations
Net income from discontinued operations	$ 0	$ 6,650	$ 0	$ 12,521
Quest Integrity
Major classes of line items constituting income (loss) from discontinued operations
Revenues		29,723		59,263
Operating expenses		(11,886)		(27,456)
Selling, general and administrative expenses		(9,823)		(17,589)
Interest expense, net		(4)		(30)
Other expense		(1,783)		(2,260)
Income from discontinued operations before income taxes		6,227		11,928
Benefit from income taxes		423		593
Net income from discontinued operations		$ 6,650		12,521
Cash flows provided by operating activities of discontinued operations:
Depreciation and amortization				1,146
Cash flows provided by investing activities of discontinued operations:
Capital expenditures				$ 2,585