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Consolidated Statements Of Comprehensive Income (Parenthetical) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Consolidated Statements Of Comprehensive Income [Abstract] |  |  |
Net unrealized appreciation on securities available for sale, tax | $ (7,926) | $ 915 | $ 3,612
Reclassification adjustment for net gains related to securities available for sale included in net income, tax | (230) | (659) | (914)
Other-than-temporary impairment adjustment, tax | 122 | 398 | 950
Non-credit portion of other than temporary impairment losses, tax | (37) | (108) | (196)
Net amortization of prior service cost and actuarial gain for supplemental executive retirement plan, tax | (36) | (47) | 1
Actuarial (loss) gain on supplemental executive retirement plan, related tax | $ 51 | $ (151) | $ 19

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