(9) Fair Value Measurements (Details - Fair values) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Cash and cash equivalents	$ 12,944	$ 29,928
Restricted cash and equivalents	159,762	146,620
Finance receivables, net	79,700	178,795
Accrued interest receivable	776	2,269
Warehouse lines of credit	242,449	105,610
Residual interest financing	49,560	53,682
Accrued interest payable	5,063	3,568
Securitization trust debt	1,969,599	1,740,901
Subordinated renewable notes	27,249	26,459
Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Cash and cash equivalents	12,944	29,928
Restricted cash and equivalents	159,762	146,620
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	79,700	178,795
Accrued interest receivable	776	2,269
Warehouse lines of credit	242,449	105,610
Residual interest financing	49,560	53,682
Accrued interest payable	5,063	3,568
Securitization trust debt	1,969,599	1,740,901
Subordinated renewable notes	27,249	26,459
Carrying Value [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Cash and cash equivalents	12,944	29,928
Restricted cash and equivalents	159,762	146,620
Finance receivables, net	89,690	176,184
Accrued interest receivable	776	2,269
Warehouse lines of credit	242,449	105,610
Residual interest financing	49,560	53,682
Accrued interest payable	5,063	3,568
Securitization trust debt	2,057,100	1,759,972
Subordinated renewable notes	$ 27,249	$ 26,459