Accounts Receivable - Accounts Receivable, Net (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Jun. 30, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, net	$ 66,000		$ 74,437
Trade receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, gross	24,459		26,083
Reserve for uncollectible overdrawn accounts	(94)		(169)
Accounts receivable, net	24,365		25,914
Overdrawn cardholder balances from purchase transactions
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, gross	7,621		3,821
Reserve for uncollectible overdrawn accounts	(2,158)	$ (2,692)	(2,230)	$ (2,119)	$ (2,033)	$ (3,394)
Accounts receivable, net	5,463		1,591
Cardholder fees
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, net	2,307		2,480
Receivables due from card issuing banks
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, net	524		3,211
Fee advances, net
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, net	8,830		28,924
Other receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable, net	$ 24,511		$ 12,317