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Commitments and Contingencies (Changes To Anticipated Loan Losses) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Loss Contingency Accrual [Roll Forward]        
Liabilities, beginning of period $ 47,093 $ 58,226 $ 46,381 $ 58,222
Reserves provided (released), net (99) 81 767 139
Payments (11,049) (69) (11,203) (123)
Liabilities, end of period $ 35,945 $ 58,238 $ 35,945 $ 58,238