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Accumulated Other Comprehensive Loss (Amounts Reclassified Out Of Each Component Of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2015 | Sep. 30, 2014 | Sep. 30, 2015 | Sep. 30, 2014
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |
Net gain on disposal of investment securities |  | $ 286 | $ 515 | $ 1,348 | $ 1,777
Interest income |  | 24,131 | 23,258 | 70,682 | 69,636
Prior service credit |  |  |  | (36) | (36)
Net actuarial losses |  |  |  | 708 | 132
Income before income taxes |  | 11,064 | 10,549 | 30,091 | 30,976
Income tax (expense) benefit |  | (2,748) | (3,365) | (8,389) | (9,541)
Net income |  | $ 8,316 | $ 7,184 | 21,702 | 21,435
Total reclassified for the period |  |  |  | 537 | 1,251
Securities Available For Sale and Transferred Securities [Member] |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |
Total reclassified for the period |  |  |  | 950 | 1,309
Pension And Post-Retirement Items [Member] |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |
Total reclassified for the period |  |  |  | (413) | (58)
Reclassification out of Accumulated Other Comprehensive Income [Member] |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |
Total reclassified for the period |  |  |  | 537 | 1,251
Reclassification out of Accumulated Other Comprehensive Income [Member] | Realized Gain on Sale of Investment Securities [Member] |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |
Net gain on disposal of investment securities |  |  |  | 1,348 | 1,777
Interest income |  |  |  | 198 | 390
Income before income taxes |  |  |  | 1,546 | 2,167
Income tax (expense) benefit |  |  |  | (596) | (858)
Net income |  |  |  | 950 | 1,309
Reclassification out of Accumulated Other Comprehensive Income [Member] | Pension And Post-Retirement Items [Member] |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |
Prior service credit | [1] |  |  | 36 | 36
Net actuarial losses | [1] |  |  | (708) | (132)
Income before income taxes |  |  |  | (672) | (96)
Income tax (expense) benefit |  |  |  | 259 | 38
Net income |  |  |  | $ (413) | $ (58)
[1] | These items are included in the computation of net periodic pension expense. See Note 11 - Employee Benefit Plans for additional information.

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