13. Fair Value Measurements (Details - Fair Value Financial Assets) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Assets:
Cash and cash equivalents	$ 19,322	$ 17,859	$ 22,112	$ 12,966
Restricted cash and equivalents	106,054	175,382
Finance receivables, net	1,909,490	1,534,496
Finance receivables measured at fair value	61	1,664
Accrued interest receivable	31,547	23,372
Liabilities:
Warehouse lines of credit	196,461	56,839
Accrued interest payable	3,260	2,613
Residual interest financing	9,042	12,327
Debt secured by receivables measured at fair value	0	1,250
Securitization trust debt	1,731,598	1,598,496
Subordinated renewable notes	15,138	15,233
Level 1 [Member]
Assets:
Cash and cash equivalents	19,322	17,859
Restricted cash and equivalents	106,054	175,382
Finance receivables, net	0	0
Finance receivables measured at fair value	0	0
Accrued interest receivable	0	0
Liabilities:
Warehouse lines of credit	0	0
Accrued interest payable	0	0
Residual interest financing	0	0
Debt secured by receivables measured at fair value	0	0
Securitization trust debt	0	0
Subordinated renewable notes	0	0
Level 2 [Member]
Assets:
Cash and cash equivalents	0	0
Restricted cash and equivalents	0	0
Finance receivables, net	0	0
Finance receivables measured at fair value	0	0
Accrued interest receivable	0	0
Liabilities:
Warehouse lines of credit	0	0
Accrued interest payable	0	0
Residual interest financing	0	0
Debt secured by receivables measured at fair value	0	0
Securitization trust debt	0	0
Subordinated renewable notes	0	0
Level 3 [Member]
Assets:
Cash and cash equivalents	0	0
Restricted cash and equivalents	0	0
Finance receivables, net	1,879,510	1,512,567
Finance receivables measured at fair value	61	1,664
Accrued interest receivable	31,547	23,372
Liabilities:
Warehouse lines of credit	196,461	56,839
Accrued interest payable	3,260	2,613
Residual interest financing	9,042	12,327
Debt secured by receivables measured at fair value	0	1,250
Securitization trust debt	1,718,418	1,619,742
Subordinated renewable notes	15,138	15,233
Total Amount [Member]
Assets:
Cash and cash equivalents	19,322	17,859
Restricted cash and equivalents	106,054	175,382
Finance receivables, net	1,879,510	1,512,567
Finance receivables measured at fair value	61	1,664
Accrued interest receivable	31,547	23,372
Liabilities:
Warehouse lines of credit	196,461	56,839
Accrued interest payable	3,260	2,613
Residual interest financing	9,042	12,327
Debt secured by receivables measured at fair value	0	1,250
Securitization trust debt	1,718,418	1,619,742
Subordinated renewable notes	$ 15,138	$ 15,233