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Loans and Allowance for Credit Losses, Allowance for Credit Losses Methodology (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Jun. 30, 2023
Dec. 31, 2022
Jun. 30, 2022
Dec. 31, 2021
Allowance for Credit Losses Methodology [Abstract]                
Finance receivable, allowance for credit losses $ 20,649 $ 13,153 $ 20,649 $ 13,153 $ 16,377 $ 14,734 $ 10,819 $ 10,316
Finance receivable, provision for credit losses 4,271 $ 2,348 5,681 $ 2,843        
Unfunded commitments, allowance for credit losses           0    
ASU 2016-13 [Member]                
Allowance for Credit Losses Methodology [Abstract]                
Finance receivable, provision for credit losses     5,700          
Cumulative Effect, Period of Adoption, Adjustment [Member]                
Allowance for Credit Losses Methodology [Abstract]                
Finance receivable, allowance for credit losses           (250)    
Cumulative Effect, Period of Adoption, Adjustment [Member] | ASU 2016-13 [Member]                
Allowance for Credit Losses Methodology [Abstract]                
Finance receivable, allowance for credit losses           250    
Unfunded commitments, allowance for credit losses           500    
Unfunded Commitment [Member]                
Allowance for Credit Losses Methodology [Abstract]                
Unfunded commitments, allowance for credit losses 464   464   $ 576 0    
Unfunded commitments, provision for credit losses $ (112)   (36)          
Unfunded Commitment [Member] | ASU 2016-13 [Member]                
Allowance for Credit Losses Methodology [Abstract]                
Unfunded commitments, provision for credit losses     $ (36)          
Unfunded Commitment [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]                
Allowance for Credit Losses Methodology [Abstract]                
Unfunded commitments, allowance for credit losses           (500)    
Unfunded Commitment [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | ASU 2016-13 [Member]                
Allowance for Credit Losses Methodology [Abstract]                
Unfunded commitments, allowance for credit losses           $ 500