REVENUE FROM CONTRACTS WITH CUSTOMERS - Additional information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Revenue from Contract with Customer [Abstract]
Accounts receivable, net	$ 44,722		$ 49,673
Unbilled receivables	14,100		12,315
Advances against customer contracts	200		200
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Recognized revenue	14,939	$ 17,279
Capitalized costs	868		1,605
Capitalized cost, recognized	915	$ 57
Service and Fee
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Deferred revenue	75,509		$ 69,507
Service and Fee | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-04-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, amount	$ 43,386
Revenue, remaining performance obligation, expected timing of satisfaction, period	9 months
Service and Fee | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, amount	$ 12,249
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Service and Fee | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, amount	$ 8,594
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Service and Fee | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, amount	$ 5,344
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Service and Fee | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, amount	$ 2,724
Revenue, remaining performance obligation, expected timing of satisfaction, period	1 year
Service and Fee | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2027-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, remaining performance obligation, amount	$ 3,212
Revenue, remaining performance obligation, expected timing of satisfaction, period