Summary of Significant Accounting Policies - Schedule of Settlement and Merchant Reserve Assets and Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022	Sep. 30, 2022
Settlement And Merchant Reserve Assets And Liabilities [Abstract]
Settlement assets	$ 178,367	$ 219,368
Merchant reserve assets	15,004	19,285
Total	193,371	238,653	$ 172,609
Settlement liabilities	176,633	218,525
Merchant reserve liabilities	15,004	19,285
Total	$ 191,637	$ 237,810