Summary of Significant Accounting Policies - Schedule of Settlement and Merchant Reserve Assets and Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021	Jun. 30, 2021
Settlement And Merchant Reserve Assets And Liabilities [Abstract]
Settlement assets	$ 195,307	$ 171,505
Merchant reserve assets	18,153	14,762
Total	213,460	186,267	$ 142,684
Settlement liabilities	193,883	170,514
Merchant reserve liabilities	18,153	14,762
Total	$ 212,036	$ 185,276