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1. Summary of Significant Accounting Policies (Details Narrative) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($) shares	Dec. 31, 2018 USD ($) shares	Dec. 31, 2017 shares
Unrestricted cash balance	$ 5,295	$ 12,787
Other assets	$ 39,852	$ 26,801
Incremental shares excluded from EPS calculation | shares	11,300	10,300	7,500
CPS Leasing, Inc. [Member]
Ownership percentage in subsidiary	0.80
Repossessed Vehicles [Member]
Other assets	$ 7,500	$ 8,900
Dealer concentration [Member] | Geographic Concentration [Member] | CALIFORNIA
Concentration percentage	12.60%	8.70%
Dealer concentration [Member] | Geographic Concentration [Member] | OHIO
Concentration percentage	10.80%	8.80%
Dealer concentration [Member] | Geographic Concentration [Member] | INDIANA
Concentration percentage	6.30%	5.20%
Dealer concentration [Member] | Geographic Concentration [Member] | NORTH CAROLINA
Concentration percentage	5.40%	6.20%
Dealer concentration [Member] | Geographic Concentration [Member] | FLORIDA
Concentration percentage	4.90%	6.00%

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