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Loans Held for Sale Schedule of Changes in Valuation Allowance (Details) - Valuation Allowance for Loans Held for Sale [Member] - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Beginning balance $ 6,491 $ 15,933 $ 10,064 $ 14,658
Provision 906 (63) 1,761 2,100
Transfer from Liability for indemnification obligations (Other liabilities) 1,529 601 2,416 2,306
Sales of loans (426) (6,450) (6,071) (8,699)
Other (2) 0 328 (344)
Ending balance $ 8,498 $ 10,021 $ 8,498 $ 10,021