Fair Value Measurements (Details - Fair values) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Cash and cash equivalents	$ 6,174	$ 13,490
Restricted cash and equivalents	119,257	149,299
Finance receivables, net	20,848	60,063
Accrued interest receivable	292	649
Warehouse lines of credit	234,025	285,328
Accrued interest payable	7,928	6,190
Securitization trust debt	2,183,331	1,957,995
Subordinated renewable notes	17,188	25,263
Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Cash and cash equivalents	6,174	13,490
Restricted cash and equivalents	119,257	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	20,848	60,063
Accrued interest receivable	292	649
Warehouse lines of credit	234,025	285,328
Accrued interest payable	7,928	6,190
Securitization trust debt	2,183,331	1,957,995
Subordinated renewable notes	17,188	25,263
Carrying Value [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Cash and cash equivalents	6,174	13,490
Restricted cash and equivalents	119,257	149,299
Finance receivables, net	24,684	70,551
Accrued interest receivable	292	649
Warehouse lines of credit	234,025	285,328
Accrued interest payable	7,928	6,190
Securitization trust debt	2,265,446	2,108,744
Subordinated renewable notes	$ 17,188	$ 25,263