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(2) Finance Receivables (Details - Amortized Cost Basis) - USD ($) $ in Thousands | Jun. 30, 2022 | Dec. 31, 2021
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Financing Receivable, Past Due [Line Items] |  |
Amortized cost basis | $ 149,010 | $ 232,390
Vintage Pool 2012 [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Amortized cost basis | 102 | 131
Vintage Pool 2013 [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Amortized cost basis | 485 | 1,091
Vintage Pool 2014 [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Amortized cost basis | 3,434 | 6,881
Vintage Pool 2015 [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Amortized cost basis | 16,467 | 29,695
Vintage Pool 2016 [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Amortized cost basis | 48,088 | 76,728
Vintage Pool 2017 [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Amortized cost basis | $ 80,434 | $ 117,864

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