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Fair Value Measurements (Quantitative Information About Significant Unobservable Inputs For MSRs) (Details) - Mortgage Servicing Rights [Member] - Level 3 [Member]
9 Months Ended 12 Months Ended
Sep. 30, 2016
Dec. 31, 2015
Fair Value Inputs, Assets, Quantitative Information [Line Items]    
Servicing fees 0.25% 0.25%
Discount rate 9.52% 9.52%
Prepayment rate (CPR) 10.22% 8.55%