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Loans to Bank Customers - Credit Quality Indicators (Details) - USD ($) $ in Thousands | Mar. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Outstanding Loans [Line Items] |  |
Total loans | $ 44,959 | $ 30,499
Non-Classified |  |
Outstanding Loans [Line Items] |  |
Total loans | 42,535 | 27,930
Classified |  |
Outstanding Loans [Line Items] |  |
Total loans | 2,424 | 2,569
Residential |  |
Outstanding Loans [Line Items] |  |
Total loans | 4,604 | 4,264
Residential | Non-Classified |  |
Outstanding Loans [Line Items] |  |
Total loans | 4,492 | 4,035
Residential | Classified |  |
Outstanding Loans [Line Items] |  |
Total loans | 112 | 229
Commercial |  |
Outstanding Loans [Line Items] |  |
Total loans | 2,540 | 2,542
Commercial | Non-Classified |  |
Outstanding Loans [Line Items] |  |
Total loans | 2,540 | 2,542
Commercial | Classified |  |
Outstanding Loans [Line Items] |  |
Total loans | 0 | 0
Installment |  |
Outstanding Loans [Line Items] |  |
Total loans | 3,840 | 1,407
Installment | Non-Classified |  |
Outstanding Loans [Line Items] |  |
Total loans | 3,748 | 1,306
Installment | Classified |  |
Outstanding Loans [Line Items] |  |
Total loans | 92 | 101
Consumer |  |
Outstanding Loans [Line Items] |  |
Total loans | 25,947 | 14,446
Consumer | Non-Classified |  |
Outstanding Loans [Line Items] |  |
Total loans | 25,947 | 14,446
Consumer | Classified |  |
Outstanding Loans [Line Items] |  |
Total loans | 0 | 0
Secured credit card |  |
Outstanding Loans [Line Items] |  |
Total loans | 8,028 | 7,840
Secured credit card | Non-Classified |  |
Outstanding Loans [Line Items] |  |
Total loans | 5,808 | 5,601
Secured credit card | Classified |  |
Outstanding Loans [Line Items] |  |
Total loans | $ 2,220 | $ 2,239

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