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Advances Schedule of Changes in Allowance for Losses (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Advances [Abstract]        
Beginning balance $ 35,844 $ 42,523 $ 37,952 $ 41,901
Provision (123) 3,963 3,298 7,446
Charge-offs, net and other (15,393) (7,045) (20,922) (9,906)
Ending balance $ 20,328 $ 39,441 $ 20,328 $ 39,441