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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
--- | ---
Mar. 31, 2020 | Mar. 31, 2019
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |
Net loss (gain) on investment securities |  | $ 221 | $ (53)
Interest income |  | 33,124 | 31,792
Income before income taxes |  | 1,449 | 14,548
Income tax expense |  | (322) | (3,027)
Net income |  | 1,127 | 11,521
Total reclassified for the period |  | (104) | (391)
Securities Available for Sale and Transferred Securities [Member] |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |
Reclassification before tax | [1] | 175 | (174)
Reclassification tax | [1] | (45) | 44
Total reclassified for the period | [1] | 130 | (130)
Prior Service Credit [Member] |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |
Reclassification before tax | [2] | 9 | 16
Net Actuarial Losses [Member] |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |
Reclassification before tax | [2] | (323) | (366)
Pension And Post-Retirement Obligations [Member] |  |  |
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] |  |  |
Reclassification before tax |  | (314) | (350)
Reclassification tax |  | 80 | 89
Total reclassified for the period |  | (234) | (261)
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 |  | 221 | (53)
Interest income |  | (46) | (121)
Income before income taxes |  | 175 | (174)
Income tax expense |  | (45) | 44
Net income |  | $ 130 | $ (130)
[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 11 – Employee Benefit Plans for additional information.

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