Revenue - Contract Assets and Deferred Revenue (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Disaggregation of Revenue [Line Items]
Contract assets - current	$ 1,605	$ 1,461
Contract assets - non-current	10,981	9,397
Total contract assets	12,586	10,858
Due to Issuing Banks	7,721	7,892
Deferred revenue - non-current	4,779	4,071
Total deferred revenue	18,372	15,900
Prepaid expenses and other current assets
Disaggregation of Revenue [Line Items]
Contract assets - current	1,605	1,461
Other assets
Disaggregation of Revenue [Line Items]
Contract assets - non-current	10,981	9,397
Accrued expenses and other current liabilities
Disaggregation of Revenue [Line Items]
Due to Issuing Banks	13,593	11,829
Other liabilities
Disaggregation of Revenue [Line Items]
Deferred revenue - non-current	$ 4,779	$ 4,071