BUSINESS ACQUISITIONS (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Business Acquisition [Line Items]
Change in fair value of contingent consideration	$ (196,000)	$ 6,658,000	$ (8,249,000)	$ 7,711,000
QuoteWizard
Business Acquisition [Line Items]
Change in fair value of contingent consideration	(196,000)	6,568,000	(8,249,000)	6,364,000
Ovation
Business Acquisition [Line Items]
Change in fair value of contingent consideration	0	90,000	0	1,270,000
SnapCap
Business Acquisition [Line Items]
Change in fair value of contingent consideration	0	$ 0	0	$ 77,000
Minimum
Business Acquisition [Line Items]
Contingent consideration	0		0
Maximum
Business Acquisition [Line Items]
Contingent consideration	$ 23,400,000		$ 23,400,000