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(1) Summary of Significant Accounting Policies (Details Narrative)
shares in Thousands, $ in Thousands
12 Months Ended
Dec. 31, 2021
USD ($)
shares
Dec. 31, 2020
USD ($)
shares
Dec. 31, 2019
shares
Product Information [Line Items]      
Unrestricted cash $ 29,928 $ 13,466  
Portfolio value 29,500 4,400  
Other assets $ 34,775 $ 32,317  
Incremental shares excluded from EPS calculation | shares 5,700 13,600 11,300
Provision for credit losses $ 14,600 $ 14,100  
Receivables at fair value 29,500    
Repossessed Vehicles [Member]      
Product Information [Line Items]      
Other assets 2,500 $ 3,800  
Unrestricted Cash [Member]      
Product Information [Line Items]      
Unrestricted cash $ 29,900    
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 10.90% 13.50%  
Dealer concentration [Member] | Geographic Concentration Risk [Member] | OHIO      
Product Information [Line Items]      
Concentration percentage 9.30% 11.10%  
Dealer concentration [Member] | Geographic Concentration Risk [Member] | TEXAS      
Product Information [Line Items]      
Concentration percentage 6.10% 5.10%  
Dealer concentration [Member] | Geographic Concentration Risk [Member] | NORTH CAROLINA      
Product Information [Line Items]      
Concentration percentage 5.00% 4.60%  
Dealer concentration [Member] | Geographic Concentration Risk [Member] | INDIANA      
Product Information [Line Items]      
Concentration percentage 5.00% 5.40%  
Dealer concentration [Member] | Geographic Concentration Risk [Member] | PANAMA      
Product Information [Line Items]      
Concentration percentage 4.60% 3.40%