REPORTABLE SEGMENTS AND RELATED INFORMATION - Summary of Financial Information for Reportable and Segments (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Segment Reporting Information [Line Items]
Revenues	$ 141,156	$ 134,590	$ 93,589	$ 91,119	$ 87,074	$ 90,385	$ 91,566	$ 85,180	$ 460,454	$ 354,205	$ 344,900
Costs & expenses									358,776	279,176	260,723
Depreciation & amortization	3,762	3,528	3,473	3,482	3,535	3,524	3,130	2,421	14,245	12,610	9,117
Total operating expenses	$ 23,924	$ 29,806	$ 18,379	$ 15,324	$ 11,744	$ 17,971	$ 17,729	$ 14,975	87,433	62,419	75,060
State Enterprise
Segment Reporting Information [Line Items]
Revenues									331,720	290,281	312,492
Payments
Segment Reporting Information [Line Items]
Revenues									41,092	37,976	10,936
TourHealth
Segment Reporting Information [Line Items]
Revenues									61,634	0	0
Operating Segments | State Enterprise
Segment Reporting Information [Line Items]
Revenues									331,720	290,281	312,492
Costs & expenses									199,901	175,490	187,321
Depreciation & amortization									2,682	2,723	2,985
Total operating expenses									129,137	112,068	122,186
Operating Segments | Payments
Segment Reporting Information [Line Items]
Revenues									41,092	37,976	10,936
Costs & expenses									32,314	30,922	8,536
Depreciation & amortization									6	3	0
Total operating expenses									8,772	7,051	2,400
Operating Segments | TourHealth
Segment Reporting Information [Line Items]
Revenues									61,634	0	0
Costs & expenses									51,606	0	0
Depreciation & amortization									0	0	0
Total operating expenses									10,028	0	0
Operating Segments | All Other
Segment Reporting Information [Line Items]
Revenues									26,008	25,948	21,472
Costs & expenses									10,913	10,714	8,175
Depreciation & amortization									4,516	1,619	100
Total operating expenses									10,579	13,615	13,197
Other Reconciling Items
Segment Reporting Information [Line Items]
Revenues									0	0	0
Costs & expenses									64,042	62,050	56,691
Depreciation & amortization									7,041	8,265	6,032
Total operating expenses									$ (71,083)	$ (70,315)	$ (62,723)