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Loans to Bank Customers - Credit Quality Indicators (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Outstanding Loans [Line Items]
Total loans	$ 42,607	$ 30,499
Non-Classified
Outstanding Loans [Line Items]
Total loans	40,500	27,930
Classified
Outstanding Loans [Line Items]
Total loans	2,107	2,569
Residential
Outstanding Loans [Line Items]
Total loans	4,824	4,264
Residential | Non-Classified
Outstanding Loans [Line Items]
Total loans	4,761	4,035
Residential | Classified
Outstanding Loans [Line Items]
Total loans	63	229
Commercial
Outstanding Loans [Line Items]
Total loans	2,530	2,542
Commercial | Non-Classified
Outstanding Loans [Line Items]
Total loans	2,530	2,542
Commercial | Classified
Outstanding Loans [Line Items]
Total loans	0	0
Installment
Outstanding Loans [Line Items]
Total loans	4,132	1,407
Installment | Non-Classified
Outstanding Loans [Line Items]
Total loans	4,044	1,306
Installment | Classified
Outstanding Loans [Line Items]
Total loans	88	101
Consumer
Outstanding Loans [Line Items]
Total loans	21,688	14,446
Consumer | Non-Classified
Outstanding Loans [Line Items]
Total loans	21,688	14,446
Consumer | Classified
Outstanding Loans [Line Items]
Total loans	0	0
Secured credit card
Outstanding Loans [Line Items]
Total loans	9,433	7,840
Secured credit card | Non-Classified
Outstanding Loans [Line Items]
Total loans	7,477	5,601
Secured credit card | Classified
Outstanding Loans [Line Items]
Total loans	$ 1,956	$ 2,239

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Amortized cost excluding accrued interest, before allowance for credit loss, of financing receivable. Excludes net investment in lease.

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