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Investments (Aggregate Carrying And Approximate Market Values Of Available-For-Sale Securities) (Details) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Schedule of Available-for-sale Securities [Line Items]    
Securities available-for-sale, Amortized Cost $ 367,884 $ 251,954
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax 5,099 5,922
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax 3,517 3,833
Securities available-for-sale 369,466 254,043
U.S. Government agencies    
Schedule of Available-for-sale Securities [Line Items]    
Securities available-for-sale, Amortized Cost 5 1,816
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax 0 11
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax 0 0
Securities available-for-sale 5 1,827
Obligations of states and political subdivisions    
Schedule of Available-for-sale Securities [Line Items]    
Securities available-for-sale, Amortized Cost 49,725 41,382
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax 979 722
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax 7 8
Securities available-for-sale 50,697 42,096
U.S. Government agencies    
Schedule of Available-for-sale Securities [Line Items]    
Securities available-for-sale, Amortized Cost 287,933 185,831
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax 2,285 3,470
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax 2,021 1,973
Securities available-for-sale 288,197 187,328
Private label    
Schedule of Available-for-sale Securities [Line Items]    
Securities available-for-sale, Amortized Cost 1,222 1,700
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax 9 8
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax 0 4
Securities available-for-sale 1,231 1,704
Trust preferred securities    
Schedule of Available-for-sale Securities [Line Items]    
Securities available-for-sale, Amortized Cost 6,550 9,763
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax 463 425
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax 1,155 1,152
Securities available-for-sale 5,858 9,036
Corporate securities    
Schedule of Available-for-sale Securities [Line Items]    
Securities available-for-sale, Amortized Cost 18,793 7,806
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax 221 204
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax 321 693
Securities available-for-sale 18,693 7,317
Debt Securities    
Schedule of Available-for-sale Securities [Line Items]    
Securities available-for-sale, Amortized Cost 364,228 248,298
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax 3,957 4,840
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax 3,504 3,830
Securities available-for-sale 364,681 249,308
Equity Securities    
Schedule of Available-for-sale Securities [Line Items]    
Securities available-for-sale, Amortized Cost 2,131 2,131
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax 1,142 1,082
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax 0 0
Securities available-for-sale 3,273 3,213
Investment funds    
Schedule of Available-for-sale Securities [Line Items]    
Securities available-for-sale, Amortized Cost 1,525 1,525
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax 0 0
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax 13 3
Securities available-for-sale $ 1,512 $ 1,522