11. Fair Value Measurements (Details-Level 3 fair value measurements) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2015	Dec. 31, 2014	Mar. 31, 2015	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013
Assets:
Finance receivables measured at fair value	$ 316	$ 1,664	$ 743	$ 5,686	$ 9,058	$ 14,476
Liabilities:
Debt secured by receivables measured at fair value	0	1,250
Finance receivables
Assets:
Finance receivables measured at fair value	$ 316	$ 1,664
Liabilities:
Valuation Techniques and Unobservable Inputs	Discounted cash flows; Discount rate 15.4%, Cumulative net losses 5.0%, Monthly average prepayments 0.5%	Discounted cash flows; Discount rate 15.4%, Cumulative net losses 5.0%, Monthly average prepayments 0.5%
Debt secured by receivables measured at fair value
Liabilities:
Debt secured by receivables measured at fair value		$ 1,250
Valuation Techniques and Unobservable Inputs		Discounted cash flows, Discount rate 12.2%
DebtSecuredReceivablesMember
Liabilities:
Debt secured by receivables measured at fair value	$ 0