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(1) Summary of Significant Accounting Policies (Details Narrative) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Product Information [Line Items] |  |  |
Unrestricted cash | $ 13,490,000 | $ 29,928,000 |
Portfolio value | 15,300,000 | 4,400,000 |
Other assets | $ 30,325,000 | $ 34,775,000 |
Incremental shares excluded from EPS calculation | 1,200,000 | 5,700,000 | 13,600,000
Repossessed Vehicles [Member] [Default Label] |  |  |
Product Information [Line Items] |  |  |
Other assets | $ 571,000 | $ 2,500,000 |
Unrestricted Cash [Member] |  |  |
Product Information [Line Items] |  |  |
Unrestricted cash | $ 13,500,000 |  |
CALIFORNIA | Dealer concentration [Member] | Geographic Concentration Risk [Member] |  |  |
Product Information [Line Items] |  |  |
Concentration percentage | 8.20% | 10.90% |
TEXAS | Dealer concentration [Member] | Geographic Concentration Risk [Member] |  |  |
Product Information [Line Items] |  |  |
Concentration percentage | 7.80% | 6.10% |
OHIO | Dealer concentration [Member] | Geographic Concentration Risk [Member] |  |  |
Product Information [Line Items] |  |  |
Concentration percentage | 7.60% | 9.30% |
ILLINOIS | Dealer concentration [Member] | Geographic Concentration Risk [Member] |  |  |
Product Information [Line Items] |  |  |
Concentration percentage | 5.70% | 3.60% |
FLORIDA | Dealer concentration [Member] | Geographic Concentration Risk [Member] |  |  |
Product Information [Line Items] |  |  |
Concentration percentage | 5.10% | 5.00% |
PENNSYLVANIA | Dealer concentration [Member] | Geographic Concentration Risk [Member] |  |  |
Product Information [Line Items] |  |  |
Concentration percentage | 4.60% | 4.60% |
INDIANA | Dealer concentration [Member] | Geographic Concentration Risk [Member] |  |  |
Product Information [Line Items] |  |  |
Concentration percentage | 4.60% | 5.00% |

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