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(1) Summary of Significant Accounting Policies (Details Narrative) shares in Thousands, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 USD ($) shares | Dec. 31, 2019 USD ($) shares | Dec. 31, 2018 USD ($) shares
Product Information [Line Items] |  |  |
Cash and Cash Equivalents, at Carrying Value | $ 13,466 | $ 5,295 |
[custom:MarkToFinanceReceivablesMeasuredAtFairValue] | 29,528 | (0) | $ (0)
Other assets | $ 32,317 | $ 39,852 |
Incremental shares excluded from EPS calculation | shares | 13,600 | 11,300 | 10,300
Provision for Loan and Lease Losses | $ 14,113 | $ 85,773 | $ 133,080
Repossessed Vehicles [Member] |  |  |
Product Information [Line Items] |  |  |
Other assets | $ 3,800 | $ 7,500 |
Repossessed Vehicles [Member] |  |  |
Product Information [Line Items] |  |  |
Ownership percentage in subsidiary | 0.80 |  |
Dealer concentration [Member] | Geographic Concentration Risk [Member] | CALIFORNIA |  |  |
Product Information [Line Items] |  |  |
Concentration percentage | 13.50% | 12.60% |
Dealer concentration [Member] | Geographic Concentration Risk [Member] | OHIO |  |  |
Product Information [Line Items] |  |  |
Concentration percentage | 11.10% | 10.80% |
Dealer concentration [Member] | Geographic Concentration Risk [Member] | TEXAS |  |  |
Product Information [Line Items] |  |  |
Concentration percentage | 5.40% | 6.30% |
Dealer concentration [Member] | Geographic Concentration Risk [Member] | NORTH CAROLINA |  |  |
Product Information [Line Items] |  |  |
Concentration percentage | 5.30% | 5.40% |
Dealer concentration [Member] | Geographic Concentration Risk [Member] | INDIANA |  |  |
Product Information [Line Items] |  |  |
Concentration percentage | 5.10% | 4.20% |

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