SEGMENT INFORMATION (Details) - USD ($) $ in Thousands		1 Months Ended	7 Months Ended	8 Months Ended	12 Months Ended
	Jun. 18, 2021	Jun. 30, 2021	Dec. 31, 2019	Sep. 03, 2019	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Net revenues			$ 80,415	$ 140,738	$ 337,596	$ 282,914
Segment Adjusted EBITDA			16,326	35,278	85,446	74,247
Unallocated			(66)	(3,595)	(11,819)	(9,024)
Adjustments to reconcile to U.S. GAAP net income (loss) from continuing operations
Depreciation and amortization			(9,188)	(13,359)	(30,480)	(28,032)
Interest expense			(5,762)	(6,213)	(17,294)	(18,853)
Income tax provision			858	23,288	619	1,904
Change in fair value of contingent consideration			0	19,671	96	(10,770)
Cost of COVID-19			0	0	(3,827)	(10,174)
Consultant lower utilization due to COVID-19			0	0	0	(2,062)
Sales and use tax			(1,906)	(3,133)	(2,569)	(8,194)
Non-cash stock compensation expense			0	(300)	(4,380)	(6,682)
Transaction related costs			(14,784)	(2,511)	(5,894)	(3,949)
Acquisition bonus expense – HealthScape and Pareto acquisition			(1,663)	(3,685)	(667)	(1,989)
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			(714)	(1,754)	(6,333)	(4,460)
Net income (loss) from continuing operations			(16,899)	4,345	(9,978)	(6,498)
Covid related expense, labor and related expenses					0	3,200
Covid related expense, vendor expense					2,300	2,900
Covid related expense, employee costs					800	2,800
Covid related expense, related training and implementation					500	700
Covid related expense, janitorial expense					200	500
Technology Enabled Solutions
Segment Reporting Information [Line Items]
Net revenues			66,530	109,932	284,619	241,336
Segment Adjusted EBITDA			14,881	29,205	69,214	66,043
Advisory Services
Segment Reporting Information [Line Items]
Net revenues			13,885	30,806	52,977	41,578
Segment Adjusted EBITDA			$ 1,445	$ 6,073	$ 16,232	$ 8,204