(12) Fair Value Measurements (Details - Fair values) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Assets:
Cash and cash equivalents	$ 13,466	$ 5,295
Restricted cash and equivalents	130,686	135,537
Finance receivables, net	429,972	841,160
Accrued interest receivable	5,017	11,645
Liabilities:
Warehouse lines of credit	118,999	134,791
Accrued interest payable	4,919	5,254
Securitization trust debt	1,862,630	2,116,520
Subordinated renewable notes	21,323	17,534
Carrying Value [Member]
Assets:
Cash and cash equivalents	13,466	5,295
Restricted cash and equivalents	130,686	135,537
Finance receivables, net	411,343	885,890
Accrued interest receivable	5,017	11,645
Liabilities:
Warehouse lines of credit	118,999	134,791
Accrued interest payable	4,919	5,254
Securitization trust debt	1,803,673	2,097,728
Subordinated renewable notes	21,323	17,534
Fair Value, Inputs, Level 1 [Member]
Assets:
Cash and cash equivalents	13,466	5,295
Restricted cash and equivalents	130,686	135,537
Finance receivables, net	0	0
Accrued interest receivable	0	0
Liabilities:
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]
Assets:
Cash and cash equivalents	0	0
Restricted cash and equivalents	0	0
Finance receivables, net	0	0
Accrued interest receivable	0	0
Liabilities:
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]
Assets:
Cash and cash equivalents	0	0
Restricted cash and equivalents	0	0
Finance receivables, net	429,972	841,160
Accrued interest receivable	5,017	11,645
Liabilities:
Warehouse lines of credit	118,999	134,791
Accrued interest payable	4,919	5,254
Securitization trust debt	1,862,630	2,116,520
Subordinated renewable notes	$ 21,323	$ 17,534