SEGMENT INFORMATION (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Segment Reporting Information [Line Items]
Net revenues	$ 96,708	$ 82,631
Segment Adjusted EBITDA	17,693	19,645
Unallocated	(2,377)	(2,048)
Adjustments to reconcile to U.S. GAAP net income (loss)
Depreciation and amortization	(8,252)	(7,372)
Interest expense	(3,719)	(5,467)
Income tax provision	676	1,007
Cost of COVID-19	(274)	(1,185)
Sales and use tax	0	(1,498)
Non-cash stock compensation expense	(1,264)	(990)
Transaction related costs	(640)	(1,086)
Acquisition bonus expense	(58)	(192)
Inventory step-up	(1,892)	0
Other	(1,047)	(1,748)
Net income (loss)	(1,154)	(934)
Technology Enabled Solutions
Segment Reporting Information [Line Items]
Net revenues	83,166	69,582
Segment Adjusted EBITDA	12,370	16,307
Advisory Services
Segment Reporting Information [Line Items]
Net revenues	13,542	13,049
Segment Adjusted EBITDA	$ 5,323	$ 3,338