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Securities Available For Sale (Summary Of Fair Value Of Securities With Continuous Unrealized Losses) (Details)
$ in Thousands
Dec. 31, 2015
USD ($)
security
Dec. 31, 2014
USD ($)
security
Schedule of Available for sale Securities [Line Items]    
Securities with continuous unrealized losses, Less than 12 months, Estimated Fair Value $ 148,059 $ 78,188
Securities with continuous unrealized losses, Less than 12 months, Number of Investments | security 199 109
Securities with continuous unrealized losses, Less than 12 months, Unrealized Losses $ 1,880 $ 1,898
Securities with continuous unrealized losses, 12 months or longer, Estimated Fair Value $ 38,756 $ 42,037
Securities with continuous unrealized losses, 12 months or longer, Number of Investments | security 71 75
Securities with continuous unrealized losses, 12 months or longer, Unrealized Losses $ 1,161 $ 434
Securities with continuous unrealized losses, Total, Estimated Fair Value $ 186,815 $ 120,225
Securities with continuous unrealized losses, Total, Number of Investments | security 270 184
Securities with continuous unrealized losses, Total, Unrealized Losses $ 3,041 $ 2,332
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 $ 112,770 $ 45,899
Securities with continuous unrealized losses, Less than 12 months, Number of Investments | security 142 53
Securities with continuous unrealized losses, Less than 12 months, Unrealized Losses $ 1,342 $ 1,168
Securities with continuous unrealized losses, 12 months or longer, Estimated Fair Value $ 23,646 $ 35,511
Securities with continuous unrealized losses, 12 months or longer, Number of Investments | security 33 45
Securities with continuous unrealized losses, 12 months or longer, Unrealized Losses $ 813 $ 369
Securities with continuous unrealized losses, Total, Estimated Fair Value $ 136,416 $ 81,410
Securities with continuous unrealized losses, Total, Number of Investments | security 175 98
Securities with continuous unrealized losses, Total, Unrealized Losses $ 2,155 $ 1,537
US Government Agency [Member]    
Schedule of Available for sale Securities [Line Items]    
Securities with continuous unrealized losses, Less than 12 months, Estimated Fair Value $ 20,201 $ 19,404
Securities with continuous unrealized losses, Less than 12 months, Number of Investments | security 30 24
Securities with continuous unrealized losses, Less than 12 months, Unrealized Losses $ 326 $ 483
Securities with continuous unrealized losses, 12 months or longer, Estimated Fair Value $ 11,232 $ 3,657
Securities with continuous unrealized losses, 12 months or longer, Number of Investments | security 22 21
Securities with continuous unrealized losses, 12 months or longer, Unrealized Losses $ 221 $ 46
Securities with continuous unrealized losses, Total, Estimated Fair Value $ 31,433 $ 23,061
Securities with continuous unrealized losses, Total, Number of Investments | security 52 45
Securities with continuous unrealized losses, Total, Unrealized Losses $ 547 $ 529
Private Label [Member]    
Schedule of Available for sale Securities [Line Items]    
Securities with continuous unrealized losses, Less than 12 months, Estimated Fair Value $ 235 $ 336
Securities with continuous unrealized losses, Less than 12 months, Number of Investments | security 2 4
Securities with continuous unrealized losses, Less than 12 months, Unrealized Losses $ 2 $ 7
Securities with continuous unrealized losses, 12 months or longer, Estimated Fair Value $ 178 $ 145
Securities with continuous unrealized losses, 12 months or longer, Number of Investments | security 5 4
Securities with continuous unrealized losses, 12 months or longer, Unrealized Losses $ 9 $ 7
Securities with continuous unrealized losses, Total, Estimated Fair Value $ 413 $ 481
Securities with continuous unrealized losses, Total, Number of Investments | security 7 8
Securities with continuous unrealized losses, Total, Unrealized Losses $ 11 $ 14
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 $ 14,853 $ 12,549
Securities with continuous unrealized losses, Less than 12 months, Number of Investments | security 25 28
Securities with continuous unrealized losses, Less than 12 months, Unrealized Losses $ 210 $ 240
Securities with continuous unrealized losses, 12 months or longer, Estimated Fair Value $ 3,700 $ 2,724
Securities with continuous unrealized losses, 12 months or longer, Number of Investments | security 11 5
Securities with continuous unrealized losses, 12 months or longer, Unrealized Losses $ 118 $ 12
Securities with continuous unrealized losses, Total, Estimated Fair Value $ 18,553 $ 15,273
Securities with continuous unrealized losses, Total, Number of Investments | security 36 33
Securities with continuous unrealized losses, Total, Unrealized Losses $ 328 $ 252