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3. Finance Receivables (Details-Repossessions) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Finance Receivables    
Gross balance of repossessions in inventory $ 40,069 $ 39,728
Allowance for losses on repossessed inventory (28,924) (26,954)
Net repossessed inventory included in other assets $ 11,145 $ 12,774