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Receivables Schedule of Changes in Allowance for Loan Losses (Details) - Government Insured Loans Claims - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Allowance for Loan and Lease Losses [Roll Forward]      
Beginning balance $ 52,497 $ 53,340 $ 53,258
Provision 29,034 37,352 40,424
Net charge-offs and other (24,663) (38,195) (40,342)
Ending balance $ 56,868 $ 52,497 $ 53,340