Fair Value Measurements (Details - Fair values) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Cash and cash equivalents	$ 7,081	$ 13,490
Restricted cash and equivalents	148,063	149,299
Finance receivables, net	42,495	60,063
Accrued interest receivable	93	649
Warehouse lines of credit	245,272	285,328
Residual interest financing	49,749
Accrued interest payable	7,243	6,190
Securitization trust debt	2,137,162	1,957,995
Subordinated renewable notes	21,204	25,263
Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Cash and cash equivalents	7,081	13,490
Restricted cash and equivalents	148,063	149,299
Finance receivables, net	0	0
Accrued interest receivable	0	0
Warehouse lines of credit	0	0
Accrued interest payable	0	0
Securitization trust debt	0	0
Subordinated renewable notes	0	0
Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Cash and cash equivalents	0	0
Restricted cash and equivalents	0	0
Finance receivables, net	0	0
Accrued interest receivable	0	0
Warehouse lines of credit	0	0
Accrued interest payable	0	0
Securitization trust debt	0	0
Subordinated renewable notes	0	0
Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Cash and cash equivalents	0	0
Restricted cash and equivalents	0	0
Finance receivables, net	42,495	60,063
Accrued interest receivable	93	649
Warehouse lines of credit	245,272	285,328
Residual interest financing	49,749
Accrued interest payable	7,243	6,190
Securitization trust debt	2,137,162	1,957,995
Subordinated renewable notes	21,204	25,263
Carrying Value [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Cash and cash equivalents	7,081	13,490
Restricted cash and equivalents	148,063	149,299
Finance receivables, net	46,359	70,551
Accrued interest receivable	93	649
Warehouse lines of credit	245,272	285,328
Residual interest financing	49,749
Accrued interest payable	7,243	6,190
Securitization trust debt	2,225,072	2,108,744
Subordinated renewable notes	$ 21,204	$ 25,263