Fair Value Measurements (Quantitative Information About Level 3 Fair Value Measurements For Certain Financial Assets) (Details)	9 Months Ended	12 Months Ended
	Sep. 30, 2016	Dec. 31, 2015
Impaired Loans [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Quantitative information about level 3 nonrecurring basis	12.00%	12.00%
Fair Value Inputs, Discount Rate	5.00%	5.00%
Other Real Estate Owned [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Quantitative information about level 3 nonrecurring basis	5.00%	5.00%
Nonrecurring [Member] | Maximum [Member] | Impaired Loans [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Quantitative information about level 3 nonrecurring basis	12.00%	12.00%
Fair Value Inputs, Discount Rate	8.00%	8.00%
Nonrecurring [Member] | Maximum [Member] | Other Real Estate Owned [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Quantitative information about level 3 nonrecurring basis	6.00%	6.00%
Nonrecurring [Member] | Minimum [Member] | Impaired Loans [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Quantitative information about level 3 nonrecurring basis	12.00%	12.00%
Fair Value Inputs, Discount Rate	4.00%	3.00%
Nonrecurring [Member] | Minimum [Member] | Other Real Estate Owned [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Quantitative information about level 3 nonrecurring basis	2.00%	2.00%