SEGMENT INFORMATION (Details) - USD ($) $ in Thousands		1 Months Ended	3 Months Ended		9 Months Ended
	Jun. 18, 2021	Jun. 30, 2021	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Segment Reporting Information [Line Items]
Net revenues			$ 82,411	$ 69,528	$ 240,290	$ 195,833
Segment Adjusted EBITDA			24,345	20,887	65,197	48,264
Unallocated			(3,742)	(2,086)	(8,731)	(6,410)
Adjustments to reconcile to U.S. GAAP net income (loss) from continuing operations
Depreciation and amortization			(7,473)	(6,918)	(22,667)	(20,710)
Interest expense			(3,283)	(4,561)	(15,144)	(13,471)
Income tax provision			(1,131)	472	5,042	3,272
Cost of COVID-19			(746)	(3,254)	(3,057)	(7,772)
Sales and use tax			(1,734)	(2,122)	(5,802)	(5,577)
Non-cash stock compensation expense			(1,093)	(1,745)	(3,166)	(5,671)
Transaction related costs			(328)	(80)	(2,969)	(277)
Acquisition bonus expense – HealthScape and Pareto acquisition			(192)	(481)	(481)	(1,476)
Loss on extinguishment of debt	$ (5,000)		0	0	(5,015)	0
Director and officer prior act liability insurance policy	$ (7,900)	$ (7,900)	0	0	(7,861)	0
Other			(937)	(1,758)	(5,737)	(4,773)
Net income (loss) from continuing operations			3,686	(1,646)	(10,391)	(14,601)
Technology Enabled Solutions
Segment Reporting Information [Line Items]
Net revenues			69,248	60,056	200,196	166,850
Segment Adjusted EBITDA			19,786	19,088	52,038	44,196
Advisory Services
Segment Reporting Information [Line Items]
Net revenues			13,163	9,472	40,094	28,983
Segment Adjusted EBITDA			$ 4,559	$ 1,799	$ 13,159	$ 4,068