BUSINESS ACQUISITION - Changes in Contingent Consideration (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Business Acquisition [Line Items]
Change in fair value of contingent consideration	$ (8,249)	$ 5,327	$ 28,402
QuoteWizard
Business Acquisition [Line Items]
Change in fair value of contingent consideration	(8,249)	3,980	27,103
Ovation
Business Acquisition [Line Items]
Change in fair value of contingent consideration	0	1,270	26
SnapCap
Business Acquisition [Line Items]
Change in fair value of contingent consideration	0	77	2,220
DepositAccounts
Business Acquisition [Line Items]
Change in fair value of contingent consideration	$ 0	$ 0	$ (947)