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1. Summary of Significant Accounting Policies (Details Narrative) shares in Thousands, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 USD ($) shares | Dec. 31, 2017 USD ($) shares | Dec. 31, 2016 shares
Unrestricted cash balance | $ 12,787 | $ 12,731 |
Other assets | $ 26,801 | $ 23,397 |
Incremental shares excluded from EPS calculation | shares | 10,300 | 7,500 | 7,900
CPS Leasing, Inc. [Member] |  |  |
Ownership percentage in subsidiary | 0.80 |  |
Repossessed Vehicles [Member] |  |  |
Other assets | $ 8,900 | $ 9,700 |
Dealer concentration [Member] | Geographic Concentration [Member] | OHIO |  |  |
Concentration percentage | 8.80% | 7.40% |
Dealer concentration [Member] | Geographic Concentration [Member] | CALIFORNIA |  |  |
Concentration percentage | 8.70% | 7.10% |
Dealer concentration [Member] | Geographic Concentration [Member] | NORTH CAROLINA |  |  |
Concentration percentage | 6.20% | 5.80% |
Dealer concentration [Member] | Geographic Concentration [Member] | FLORIDA |  |  |
Concentration percentage | 6.00% | 5.90% |
Dealer concentration [Member] | Geographic Concentration [Member] | INDIANA |  |  |
Concentration percentage | 5.20% | 3.80% |

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