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Revenues and Cost of Services - Breakdown of Revenue From Contracts With Customers Per Type of Service (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Disclosure of Disaggregation of Revenue from Contracts with Customers [Line Items]      
Transaction revenues $ 234,417 $ 98,490 $ 52,048
Other revenues 9,703 5,653 3,241
Revenues from payment processing 244,120 104,143 55,289
Cost of services (113,677) (44,065) (19,413)
Gross profit $ 130,443 $ 60,078 $ 35,876