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Finance Receivables (Details - Amortized cost basis) - USD ($) $ in Thousands | Sep. 30, 2024 | Dec. 31, 2023
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Financing Receivable, Past Due [Line Items] |  |
Amortized cost basis of finance receivables | $ 8,274 | $ 27,553
Vintage Pool 2014 [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Amortized cost basis of finance receivables | 93 | 370
Vintage Pool 2015 [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Amortized cost basis of finance receivables | 435 | 1,788
Vintage Pool 2016 [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Amortized cost basis of finance receivables | 2,101 | 7,673
Vintage Pool 2017 [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Amortized cost basis of finance receivables | $ 5,645 | $ 17,722

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