2. Finance Receivables (Details-Delinquency status) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Delinquency Status
Current	$ 2,103,509	$ 2,053,759
Finance receivables	2,312,363	2,266,619
Financing Receivables, 30 to 59 Days Past Due [Member]
Delinquency Status
Finance receivables	130,457	116,073
Financing Receivables, 60 to 89 Days Past Due [Member]
Delinquency Status
Finance receivables	51,912	52,404
Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Delinquency Status
Finance receivables	$ 26,485	$ 44,383