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Loans to Bank Customers - Schedule of Credit Quality Indicators (Details) - USD ($) $ in Thousands | Mar. 31, 2026 | Dec. 31, 2025
--- | --- | ---
Non-Classified |  |
Outstanding Loans [Line Items] |  |
Total loans | $ 66,180 | $ 73,985
Classified |  |
Outstanding Loans [Line Items] |  |
Total loans | 2,929 | 2,768
Residential | Non-Classified |  |
Outstanding Loans [Line Items] |  |
Total loans | 7,424 | 7,714
Residential | Classified |  |
Outstanding Loans [Line Items] |  |
Total loans | 15 | 19
Commercial | Non-Classified |  |
Outstanding Loans [Line Items] |  |
Total loans | 2,649 | 22,688
Commercial | Classified |  |
Outstanding Loans [Line Items] |  |
Total loans | 0 | 0
Installment | Non-Classified |  |
Outstanding Loans [Line Items] |  |
Total loans | 4,217 | 4,902
Installment | Classified |  |
Outstanding Loans [Line Items] |  |
Total loans | 1,390 | 914
Consumer | Non-Classified |  |
Outstanding Loans [Line Items] |  |
Total loans | 44,179 | 29,901
Consumer | Classified |  |
Outstanding Loans [Line Items] |  |
Total loans | 0 | 0
Secured credit card | Non-Classified |  |
Outstanding Loans [Line Items] |  |
Total loans | 7,711 | 8,780
Secured credit card | Classified |  |
Outstanding Loans [Line Items] |  |
Total loans | $ 1,524 | $ 1,835

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