8. Interest Income and Interest Expense (Details - Interest Expense) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Interest Expense [Abstract]
Securitization trust debt	$ 48,631	$ 38,558	$ 34,744
Warehouse lines of credit	6,127	5,217	5,003
Senior secured debt, related party	0	1,651	8,064
Debt secured by receivables at fair value	0	772	3,877
Residual interest financing	1,405	1,989	3,330
Subordinated renewable notes	1,582	2,208	3,161
Total interest expense	$ 57,745	$ 50,395	$ 58,179