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1. Summary of Significant Accounting Policies (Details Narrative) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Unrestricted cash balance	$ 13,936	$ 19,322	$ 17,859	$ 22,112
Other assets	$ 30,252	$ 23,200
Incremental shares excluded from EPS calculation	7,900,000	6,800,000	4,500,000
Repossessed Vehicles [Member]
Other assets	$ 11,100	$ 12,800
CPS Leasing, Inc. [Member]
Ownership percentage in subsidiary	80.00%
Dealer concentration [Member] \| Geographic Concentration [Member] \| TEXAS
Concentration percentage	7.30%	7.90%
Dealer concentration [Member] \| Geographic Concentration [Member] \| CALIFORNIA
Concentration percentage	7.20%	8.90%
Dealer concentration [Member] \| Geographic Concentration [Member] \| OHIO
Concentration percentage	6.80%	6.50%
Dealer concentration [Member] \| Geographic Concentration [Member] \| FLORIDA
Concentration percentage	5.60%	5.30%
Dealer concentration [Member] \| Geographic Concentration [Member] \| GEORGIA
Concentration percentage	5.40%	5.20%