8. Interest Income and Interest Expense (Details - Interest Income) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Interest Income And Interest Expense
Interest on Finance Receivables	$ 349,796	$ 286,361	$ 231,320
Residual interest income	92	372	0
Other interest income	24	1	10
Interest income	$ 349,912	$ 286,734	$ 231,330