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3. Finance Receivables (Details - Summary of activity) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Finance Receivables      
Balance at beginning of year $ 109,187 $ 95,578 $ 75,603
Provision for credit losses 133,080 186,713 178,511
Charge-offs (220,523) (211,948) (192,366)
Recoveries 45,632 38,844 33,830
Balance at end of year $ 67,376 $ 109,187 $ 95,578