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Securities Available For Sale (Summary Of Fair Value Of Securities With Continuous Unrealized Losses) (Details)
$ in Thousands
Jun. 30, 2016
USD ($)
security
Dec. 31, 2015
USD ($)
security
Schedule of Available for sale Securities [Line Items]    
Securities with continuous unrealized losses, Less than 12 months, Estimated Fair Value $ 46,108 $ 148,059
Securities with continuous unrealized losses, Less than 12 months, Number of Investments | security 60 199
Securities with continuous unrealized losses, Less than 12 months, Unrealized Losses $ 268 $ 1,880
Securities with continuous unrealized losses, 12 months or longer, Estimated Fair Value $ 19,834 $ 38,756
Securities with continuous unrealized losses, 12 months or longer, Number of Investments | security 54 71
Securities with continuous unrealized losses, 12 months or longer, Unrealized Losses $ 336 $ 1,161
Securities with continuous unrealized losses, Total, Estimated Fair Value $ 65,942 $ 186,815
Securities with continuous unrealized losses, Total, Number of Investments | security 114 270
Securities with continuous unrealized losses, Total, Unrealized Losses $ 604 $ 3,041
US Government-Sponsored Enterprises [Member]    
Schedule of Available for sale Securities [Line Items]    
Securities with continuous unrealized losses, Less than 12 months, Estimated Fair Value $ 35,865 $ 112,770
Securities with continuous unrealized losses, Less than 12 months, Number of Investments | security 42 142
Securities with continuous unrealized losses, Less than 12 months, Unrealized Losses $ 224 $ 1,342
Securities with continuous unrealized losses, 12 months or longer, Estimated Fair Value $ 9,678 $ 23,646
Securities with continuous unrealized losses, 12 months or longer, Number of Investments | security 22 33
Securities with continuous unrealized losses, 12 months or longer, Unrealized Losses $ 173 $ 813
Securities with continuous unrealized losses, Total, Estimated Fair Value $ 45,543 $ 136,416
Securities with continuous unrealized losses, Total, Number of Investments | security 64 175
Securities with continuous unrealized losses, Total, Unrealized Losses $ 397 $ 2,155
US Government Agencies [Member]    
Schedule of Available for sale Securities [Line Items]    
Securities with continuous unrealized losses, Less than 12 months, Estimated Fair Value $ 7,619 $ 20,201
Securities with continuous unrealized losses, Less than 12 months, Number of Investments | security 11 30
Securities with continuous unrealized losses, Less than 12 months, Unrealized Losses $ 27 $ 326
Securities with continuous unrealized losses, 12 months or longer, Estimated Fair Value $ 4,920 $ 11,232
Securities with continuous unrealized losses, 12 months or longer, Number of Investments | security 16 22
Securities with continuous unrealized losses, 12 months or longer, Unrealized Losses $ 70 $ 221
Securities with continuous unrealized losses, Total, Estimated Fair Value $ 12,539 $ 31,433
Securities with continuous unrealized losses, Total, Number of Investments | security 27 52
Securities with continuous unrealized losses, Total, Unrealized Losses $ 97 $ 547
Private Label [Member]    
Schedule of Available for sale Securities [Line Items]    
Securities with continuous unrealized losses, Less than 12 months, Estimated Fair Value $ 198 $ 235
Securities with continuous unrealized losses, Less than 12 months, Number of Investments | security 2 2
Securities with continuous unrealized losses, Less than 12 months, Unrealized Losses $ 10 $ 2
Securities with continuous unrealized losses, 12 months or longer, Estimated Fair Value $ 159 $ 178
Securities with continuous unrealized losses, 12 months or longer, Number of Investments | security 5 5
Securities with continuous unrealized losses, 12 months or longer, Unrealized Losses $ 9 $ 9
Securities with continuous unrealized losses, Total, Estimated Fair Value $ 357 $ 413
Securities with continuous unrealized losses, Total, Number of Investments | security 7 7
Securities with continuous unrealized losses, Total, Unrealized Losses $ 19 $ 11
Obligations Of States And Political Subdivisions Thereof [Member]    
Schedule of Available for sale Securities [Line Items]    
Securities with continuous unrealized losses, Less than 12 months, Estimated Fair Value $ 2,426 $ 14,853
Securities with continuous unrealized losses, Less than 12 months, Number of Investments | security 5 25
Securities with continuous unrealized losses, Less than 12 months, Unrealized Losses $ 7 $ 210
Securities with continuous unrealized losses, 12 months or longer, Estimated Fair Value $ 5,077 $ 3,700
Securities with continuous unrealized losses, 12 months or longer, Number of Investments | security 11 11
Securities with continuous unrealized losses, 12 months or longer, Unrealized Losses $ 84 $ 118
Securities with continuous unrealized losses, Total, Estimated Fair Value $ 7,503 $ 18,553
Securities with continuous unrealized losses, Total, Number of Investments | security 16 36
Securities with continuous unrealized losses, Total, Unrealized Losses $ 91 $ 328