GOODWILL AND ACQUIRED INTANGIBLES - Other Intangible Assets Subject to Amortization (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2022 USD ($)
Finite-Lived Intangible Assets [Line Items]
Cost	$ 154,500
Accumulated Amortization	(34,065)
Net	120,435
Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Cost	3,500
Accumulated Amortization	(1,349)
Net	$ 2,151
Weighted Average Remaining Useful Life	1 year 9 months 18 days
Developed Technology Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Cost	$ 91,700
Accumulated Amortization	(18,733)
Net	$ 72,967
Weighted Average Remaining Useful Life	4 years 9 months 18 days
Merchant Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Cost	$ 40,300
Accumulated Amortization	(9,102)
Net	$ 31,198
Weighted Average Remaining Useful Life	3 years 8 months 12 days
Partner Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Cost	$ 2,000
Accumulated Amortization	(378)
Net	$ 1,622
Weighted Average Remaining Useful Life	5 years 8 months 12 days
Card-Linked Subscriber User Base [Member]
Finite-Lived Intangible Assets [Line Items]
Cost	$ 17,000
Accumulated Amortization	(4,503)
Net	$ 12,497
Weighted Average Remaining Useful Life	3 years 8 months 12 days