Certain Balance Sheet Components - Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Accrued costs of revenue	$ 82,580	$ 74,357
Accrued compensation and benefits	36,999	42,305
Deferred revenue	12,891	11,829
Accrued technology costs	4,454	5,039
Due to issuing banks	7,957	7,892
Accrued tax liabilities	5,773	4,929
Accrued professional services	2,734	4,559
Operating lease liabilities, current portion	4,527	3,908
Reserve for contract contingencies and processing errors	1,670	3,754
Other accrued liabilities	5,881	2,942
Accrued expenses and other current liabilities	$ 165,466	$ 161,514
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Accrued expenses and other current liabilities	Accrued expenses and other current liabilities