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Accumulated Other Comprehensive Income (Loss) (Amounts Reclassified Out Of Each Component Of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 | Mar. 31, 2019 | Jun. 30, 2018 | Mar. 31, 2018 | Jun. 30, 2019 | Jun. 30, 2018
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |  |
Net loss (gain) on investment securities |  | $ 166 |  | $ 7 |  | $ 113 | $ 7
Interest income |  | 32,464 |  | 30,230 |  | 64,256 | 59,932
Income before income taxes |  | 14,340 |  | 15,149 |  | 28,888 | 26,705
Income tax expense |  | (2,939) |  | (2,979) |  | (5,966) | (5,247)
Net income |  | 11,401 | $ 11,521 | 12,170 | $ 9,288 | 22,922 | 21,458
Total reclassified for the period |  | (230) |  | (194) |  | (621) | (382)
Securities Available for Sale and Transferred Securities [Member] |  |  |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |  |
Reclassification before tax | [1] | 42 |  | (90) |  | (132) | (172)
Reclassification tax | [1] | (11) |  | 23 |  | 33 | 44
Total reclassified for the period | [1] | 31 |  | (67) |  | (99) | (128)
Prior Service Credit [Member] |  |  |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |  |
Reclassification before tax | [2] | 17 |  | 18 |  | 33 | 36
Net Actuarial Losses [Member] |  |  |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |  |
Reclassification before tax | [2] | (366) |  | (188) |  | (732) | (375)
Pension And Post-Retirement Obligations [Member] |  |  |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |  |
Reclassification before tax |  | (349) |  | (170) |  | (699) | (339)
Reclassification tax |  | 88 |  | 43 |  | 177 | 85
Total reclassified for the period |  | (261) |  | (127) |  | (522) | (254)
Reclassification out of Accumulated Other Comprehensive Income | Securities Available for Sale and Transferred Securities [Member] |  |  |  |  |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |  |  |  |  |
Net loss (gain) on investment securities |  | 166 |  | 7 |  | 113 | 7
Interest income |  | (124) |  | (97) |  | (245) | (179)
Income before income taxes |  | 42 |  | (90) |  | (132) | (172)
Income tax expense |  | (11) |  | 23 |  | 33 | 44
Net income |  | $ 31 |  | $ (67) |  | $ (99) | $ (128)
[1] | Includes amounts related to the amortization/accretion of unrealized net gains and losses related to the Company’s reclassification of available for sale investment securities to the held to maturity category. The unrealized net gains/losses will be amortized/accreted over the remaining life of the investment securities as an adjustment of yield.
[2] | These items are included in the computation of net periodic pension expense. See Note 12 – Employee Benefit Plans for additional information.

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