Loans to Bank Customers - Schedule of Loan Summary (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Outstanding	$ 61,066	$ 49,503
Total outstanding (as a percent)	100.00%	100.00%
Total Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Outstanding	$ 4,443	$ 6,538
Percentage of outstanding (as a percent)	7.30%	13.20%
30-59 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Outstanding	$ 1,824	$ 2,369
Percentage of outstanding (as a percent)	3.00%	4.80%
60-89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Outstanding	$ 597	$ 1,633
Percentage of outstanding (as a percent)	1.00%	3.30%
90 Days or More Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Outstanding	$ 2,022	$ 2,536
Percentage of outstanding (as a percent)	3.30%	5.10%
Total Current or Less Than 30 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Outstanding	$ 56,623	$ 42,965
Total current or less than 30 days past due (as a percent)	92.70%	86.80%
Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Outstanding	$ 7,400	$ 6,875
Residential \| Total Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Outstanding	0	1
Residential \| 30-59 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Outstanding	0	1
Residential \| 60-89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Outstanding	0	0
Residential \| 90 Days or More Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Outstanding	0	0
Residential \| Total Current or Less Than 30 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Outstanding	7,400	6,874
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Outstanding	2,571	2,585
Commercial \| Total Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Outstanding	0	0
Commercial \| 30-59 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Outstanding	0	0
Commercial \| 60-89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Outstanding	0	0
Commercial \| 90 Days or More Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Outstanding	0	0
Commercial \| Total Current or Less Than 30 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Outstanding	2,571	2,585
Installment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Outstanding	6,247	5,439
Installment \| Total Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Outstanding	0	933
Installment \| 30-59 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Outstanding	0	0
Installment \| 60-89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Outstanding	0	933
Installment \| 90 Days or More Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Outstanding	0	0
Installment \| Total Current or Less Than 30 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Outstanding	6,247	4,506
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Outstanding	36,777	25,536
Consumer \| Total Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Outstanding	1,339	1,668
Consumer \| 30-59 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Outstanding	1,339	1,668
Consumer \| 60-89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Outstanding	0	0
Consumer \| 90 Days or More Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Outstanding	0	0
Consumer \| Total Current or Less Than 30 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Outstanding	35,438	23,868
Secured credit card
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Outstanding	8,071	9,068
Secured credit card \| Total Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Outstanding	3,104	3,936
Secured credit card \| 30-59 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Outstanding	485	700
Secured credit card \| 60-89 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Outstanding	597	700
Secured credit card \| 90 Days or More Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Outstanding	2,022	2,536
Secured credit card \| Total Current or Less Than 30 Days Past Due
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total Outstanding	$ 4,967	$ 5,132