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Loans to Bank Customers - Schedule of Credit Quality Indicators (Details) - USD ($) $ in Thousands | Mar. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Non-Classified |  |
Outstanding Loans [Line Items] |  |
Total loans | $ 59,013 | $ 46,933
Classified |  |
Outstanding Loans [Line Items] |  |
Total loans | 2,053 | 2,570
Residential | Non-Classified |  |
Outstanding Loans [Line Items] |  |
Total loans | 7,369 | 6,841
Residential | Classified |  |
Outstanding Loans [Line Items] |  |
Total loans | 31 | 34
Commercial | Non-Classified |  |
Outstanding Loans [Line Items] |  |
Total loans | 2,571 | 2,585
Commercial | Classified |  |
Outstanding Loans [Line Items] |  |
Total loans | 0 | 0
Installment | Non-Classified |  |
Outstanding Loans [Line Items] |  |
Total loans | 6,247 | 5,439
Installment | Classified |  |
Outstanding Loans [Line Items] |  |
Total loans | 0 | 0
Consumer | Non-Classified |  |
Outstanding Loans [Line Items] |  |
Total loans | 36,777 | 25,536
Consumer | Classified |  |
Outstanding Loans [Line Items] |  |
Total loans | 0 | 0
Secured credit card | Non-Classified |  |
Outstanding Loans [Line Items] |  |
Total loans | 6,049 | 6,532
Secured credit card | Classified |  |
Outstanding Loans [Line Items] |  |
Total loans | $ 2,022 | $ 2,536

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