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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%