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Consolidated Condensed Statements Of Changes In Stockholders' Equity (Parenthetical) (USD $) In Thousands, except Per Share data, unless otherwise specified | 3 Months Ended
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Mar. 31, 2012 | Mar. 31, 2011
Consolidated Condensed Statements Of Changes In Stockholders' Equity [Abstract] |  |
Change in pension plan assets and benefit obligations, Tax effect | $ 222 |
Unrealized net holding gain (loss) on cash flow hedge, tax | 60 | 71
Unrealized net holding gain (loss) on securities available-for-sale, tax | $ (1,188) | $ (3,431)
Cash dividends on common stock per share | $ 0.94 | $ 0.94

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