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Comprehensive Income (Tables) | 3 Months Ended
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Mar. 31, 2014
Comprehensive Income [Abstract] |
Comprehensive Income (Loss) | The Corporation’s other comprehensive income is comprised of unrealized holding gains and losses on investment securities available-for-sale, and actuarial gains of defined benefit plans, net of taxes.
Details about Accumulated Other |  | Amounts Reclassified from Accumulated |  | Affected Line Item in the Statement Where Net |
Comprehensive Income Components |  | Other Comprehensive Income |  | Income is Presented |
|  | Three Months Ended March 31, |  |  |
(Dollars in thousands) |  | 2014 |  | 2013 |  |  |
OTTI losses |  | $ | — |  | $ | (24) |  | Net investment securities gains |
|  |  | — |  |  | 6 |  | Tax benefit |
|  |  | — |  |  | (18) |  | Net of tax |
Sale of investment securities available-for-sale |  |  | 1,415 |  |  | 343 |  | Net investment securities gains |
|  |  | (380) |  |  | (90) |  | Tax expense |
|  |  | 1,035 |  |  | 253 |  | Net of tax |
Amortization of unrealized holding (losses) gains on securities transferred from available-for-sale to held-to-maturity |  |  | (45) |  |  | 14 |  | Interest income |
|  |  | 20 |  |  | (5) |  | Tax benefit (expense) |
|  |  | (25) |  |  | 9 |  | Net of tax |
Total reclassification |  | $ | 1,010 |  | $ | 244 |  | Net of tax |
Schedule of Accumulated Other Comprehensive Income (Loss) | Accumulated other comprehensive loss at March 31, 2014 and December 31, 2013 consisted of the following:
|  | March 31, 2014 |  | December 31, 2013 |
|  | (Dollars in thousands) |
Net unrealized gain on investment securities available-for-sale, net of tax |  | $ | 3,665 |  | $ | 2,374 |
Unamortized component of securities transferred from available-for-sale to held-to-maturity, net of tax |  |  | (1,400) |  |  | (1,425) |
Defined benefit pension and post-retirement plans, net of tax |  |  | (2,735) |  |  | (3,493) |
Total accumulated other comprehensive loss |  | $ | (470) |  | $ | (2,544) |

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=28358780&loc=SL7669686-108580 + Details
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- Definition Tabular disclosure of components of comprehensive income (loss). Includes, but is not limited to, foreign currency translation adjustments, foreign currency transactions designated as economic hedges of a net investment in foreign entity, gain (loss) and prior service cost (credit) for pension plans and other postretirement benefit plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=28358780&loc=d3e526-108580 + Details
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