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Finance Receivables (Details - Amortized Cost Basis) - USD ($) $ in Thousands | Sep. 30, 2023 | Dec. 31, 2022
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Financing Receivable, Past Due [Line Items] |  |
Amortized cost basis | $ 38,493 | $ 92,304
Vintage Pool 2014 [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Amortized cost basis | 595 | 1,865
Vintage Pool 2015 [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Amortized cost basis | 2,748 | 8,627
Vintage Pool 2016 [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Amortized cost basis | 11,243 | 28,632
Vintage Pool 2017 [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Amortized cost basis | $ 23,907 | $ 53,180

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