DISCONTINUED OPERATIONS - Schedule of Discontinued Operations (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Major classes of line items constituting income (loss) from discontinued operations
Net income from discontinued operations	$ 0	$ 3,747	$ 0	$ 16,268
Quest Integrity
Major classes of line items constituting income (loss) from discontinued operations
Revenues		29,441		88,704
Operating expenses		(12,052)		(39,508)
Selling, general and administrative expenses		(8,832)		(26,422)
Interest expense, net		(78)		(108)
Other expense		(2,675)		(4,934)
Income from discontinued operations before income taxes		5,804		17,732
Provision for income taxes		(2,057)		(1,464)
Net income from discontinued operations		$ 3,747		16,268
Cash flows provided by operating activities of discontinued operations:
Depreciation and amortization				1,143
Cash flows provided by investing activities of discontinued operations:
Capital expenditures				$ 3,703