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2. Finance Receivables (Details-Allowance for finance credit losses) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Finance Receivables        
Balance at beginning of period $ 79,867 $ 68,142 $ 75,603 $ 61,460
Provision for credit losses on finance receivables 44,423 35,683 88,619 69,122
Charge-offs (41,901) (34,836) (87,834) (66,665)
Recoveries 7,779 5,552 13,780 10,624
Balance at end of period $ 90,168 $ 74,541 $ 90,168 $ 74,541