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Advances - Schedule of Activity in Advances (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Advances [Roll Forward]    
Beginning balance $ 257,882 $ 444,298
Sales of advances (3) (261)
Collections of advances, charge-offs and other, net (25,814) (126,067)
Decrease (increase) in allowance for losses 2,108 (622)
Ending balance $ 234,173 $ 317,348