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Advances Schedule of Changes in Allowance for Losses (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Advances [Abstract]        
Beginning balance $ 23,135 $ 16,980 $ 23,259 $ 16,465
Provision 2,041 977 3,803 3,501
Net charge-offs and other 2,477 (1,472) 591 (3,481)
Ending balance $ 27,653 $ 16,485 $ 27,653 $ 16,485