Description of Business and Summary of Significant Accounting Policies - Revenue Recognition (Details)	3 Months Ended				6 Months Ended
	Jun. 30, 2023 USD ($) productServiceGroup		Jun. 30, 2022 USD ($)		Jun. 30, 2023 USD ($) revenueStream productServiceGroup	Jun. 30, 2022 USD ($)	Jun. 30, 2023 INR (₨) productServiceGroup
Disaggregation of Revenue [Line Items]
Number of product service channels | productServiceGroup	2				2		2
Maximum limit per gift card	$ 122				$ 122		₨ 10,000
Term of virtual gift card					15 months
Term of physical gift card					3 years
Number of revenue streams | revenueStream					2
Operating revenue	118,430,000	[1]	$ 250,781,000	[1]	$ 361,191,000	$ 537,034,000
Subscription contract term					3 years
Subscription contract renewal term					1 year
Exchanges
Disaggregation of Revenue [Line Items]
Operating revenue	98,078,000		230,943,000		$ 319,944,000	498,859,000
Risk Compliance Solutions
Disaggregation of Revenue [Line Items]
Operating revenue	20,352,000		19,838,000		41,247,000	38,175,000
Net Basis
Disaggregation of Revenue [Line Items]
Operating revenue	118,430,000		114,924,000		234,503,000	214,444,000
Net Basis | Exchanges
Disaggregation of Revenue [Line Items]
Operating revenue	98,078,000		95,086,000		193,256,000	176,269,000
Net Basis | Risk Compliance Solutions
Disaggregation of Revenue [Line Items]
Operating revenue	20,352,000		19,838,000		41,247,000	38,175,000
North America
Disaggregation of Revenue [Line Items]
Operating revenue	37,720,000		39,645,000		76,590,000	79,671,000
North America | Net Basis
Disaggregation of Revenue [Line Items]
Operating revenue	37,720,000		39,645,000		76,590,000	79,671,000
International
Disaggregation of Revenue [Line Items]
Operating revenue	80,710,000		213,061,000		284,601,000	457,363,000
International | Net Basis
Disaggregation of Revenue [Line Items]
Operating revenue	$ 80,710,000		$ 75,279,000		$ 157,913,000	$ 134,773,000

[1] Beginning April 1, 2023 Prepaid card revenues are presented on a net basis (based on new contractual changes) while periods preceding April 1, 2023 reflect prepaid card revenues on a gross basis. Please see (non- GAAP financials) table with both periods recast on a net basis, for comparison purposes under heading "Condensed Consolidated Statements of Income prepared on Net Basis for Comparative Purposes Only (Non GAAP)".