Revenue from Contracts with Customers - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended	12 Months Ended
	Dec. 31, 2021		Oct. 14, 2021	Dec. 31, 2020
Disaggregation of Revenue [Line Items]
Total revenue	$ 11,481	[1]	$ 27,956	$ 28,495
Related party net revenues	71		136	(2,007)
Digital asset marketplace
Disaggregation of Revenue [Line Items]
Total revenue	165		518	(1,073)
Rebates, liquidity payments, and reductions netted against total revenue	100		300	4,100
Loyalty redemption platform
Disaggregation of Revenue [Line Items]
Total revenue	11,315		29,179	30,774
Alternative payment platform
Disaggregation of Revenue [Line Items]
Total revenue	1		(1,741)	(576)
Considerations payable netted against total revenue	0		1,700	400
Transaction revenue, net
Disaggregation of Revenue [Line Items]
Total revenue	5,724		10,637	7,386
Rebates, liquidity payments, reductions and considerations payable netted against total revenue	100		2,100	4,500
Related party net revenues	100		300	4,100
Subscription and service revenue
Disaggregation of Revenue [Line Items]
Total revenue	$ 5,757		$ 17,319	$ 21,109

[1] As a result of the Business Combination (Note 4), ICE and its affiliates are no longer our affiliates. Refer to Note 8 for our related party disclosures.