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1. Summary of Significant Accounting Policies (Details - Other income) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Primary components of Other Income      
Other income for the period $ 10,209 $ 13,286 $ 13,738
Direct Mail Revenues [Member]      
Primary components of Other Income      
Other income for the period 6,432 9,202 8,927
Convenience Fee Revenue [Member]      
Primary components of Other Income      
Other income for the period 1,900 2,145 2,610
Recoveries on Previously Charged-Off Contracts [Member]      
Primary components of Other Income      
Other income for the period 563 766 1,079
Sales Tax Refunds [Member]      
Primary components of Other Income      
Other income for the period 866 811 616
Other Income [Member]      
Primary components of Other Income      
Other income for the period $ 448 $ 362 $ 506