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Consolidated Condensed Statements Of Changes In Stockholders' Equity (Parenthetical) (USD $) In Thousands, except Per Share data, unless otherwise specified | 6 Months Ended
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Jun. 30, 2012 | Jun. 30, 2011
Statement of Stockholders' Equity [Abstract] |  |
Change in pension plan assets and benefit obligations, Tax effect | $ 222 |
Unrealized net holding gain (loss) on cash flow hedge, tax | 139 | 104
Unrealized net holding gain (loss) on securities available-for-sale, tax | $ 326 | $ (4,578)
Cash dividends on common stock per share | $ 1.88 | $ 1.88

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