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Consolidated Condensed Statements Of Changes In Stockholders' Equity (USD $) In Thousands, unless otherwise specified | Preferred Stock [Member] | Common Stock [Member] | Retained Earnings [Member] | Treasury Stock At Cost [Member] | Accumulated Other Comprehensive Income (Loss) [Member] | Total
--- | --- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2010 | $ 97,290 | $ 305,677 | $ 406,342 | $ (77,733) | $ (1,868) |
Net Income |  |  | 22,196 |  |  | 22,196
Other comprehensive income (loss), net of tax: |  |  |  |  |  |
Unrealized net holding gain (loss) on cash flow hedge, net of income taxes |  |  |  |  | 133 | 133
Unrealized net holding gain (loss) on securities available-for-sale, net of income tax benefit |  |  |  |  | (6,371) | (6,371)
Cash dividends on common stock at $0.94 per share |  |  | (14,475) |  |  |
Cash payment for fractional shares in dividend reinvestment plan |  | (1) |  |  |  |
Accretion of discount on preferred stock | 214 |  | (214) |  |  |
Preferred stock dividends |  |  | (1,250) |  |  |
Balance at Mar. 31, 2011 | 97,504 | 305,676 | 412,599 | (77,733) | (8,106) |
Balance at Dec. 31, 2011 | 98,146 | 305,499 | 424,557 | (77,007) | (8,831) | 742,364
Net Income |  |  | 31,475 |  |  | 31,475
Other comprehensive income (loss), net of tax: |  |  |  |  |  |
Change in pension plan assets and benefit obligations, net of income taxes |  |  |  |  | 412 | (412)
Unrealized net holding gain (loss) on cash flow hedge, net of income taxes |  |  |  |  | 113 | 113
Unrealized net holding gain (loss) on securities available-for-sale, net of income tax benefit |  |  |  |  | (2,202) | (2,202)
Cash dividends on common stock at $0.94 per share |  |  | (14,481) |  |  |
Cash payment for fractional shares in dividend reinvestment plan |  | (1) |  |  |  |
Accretion of discount on preferred stock | 226 |  | (227) |  |  |
Preferred stock dividends |  |  | (1,250) |  |  |
Balance at Mar. 31, 2012 | $ 98,372 | $ 305,498 | $ 440,074 | $ (77,007) | $ (10,508) | $ 756,429

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