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Consolidated Condensed Statements Of Changes In Stockholders' Equity (USD $) In Thousands, unless otherwise specified | Total | Preferred Stock [Member] | Common Stock [Member] | Retained Earnings [Member] | Treasury Stock At Cost [Member] | Accumulated Other Comprehensive Income (loss) [Member]
--- | --- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2010 |  | $ 97,290 | $ 305,677 | $ 406,342 | $ (77,733) | $ (1,868)
Net Income | 71,530 |  |  | 71,530 |  |
Other comprehensive income, net of tax: |  |  |  |  |  |
Change in funded status of pension plan, net of income taxes |  |  |  |  |  |
Unrealized net holding gain on cash flow hedge, net of income taxes | 348 |  |  |  |  | 348
Unrealized net holding gain on securities available-for-sale, net of income taxes | 644 |  |  |  |  | 644
Cash dividends on common stock at $2.82 per share |  |  |  | (43,425) |  |
Cash payment for fractional shares in dividend reinvestment plan |  |  | (2) |  |  |
Common stock warrant repurchased | 0 |  |  |  |  |
Common stock warrants cancelled |  |  | (66) | 66 |  |
Accretion of discount on preferred stock |  | 642 |  | (642) |  |
Preferred stock dividends |  |  |  | (3,750) |  |
Balance at Sep. 30, 2011 |  | 97,932 | 305,609 | 430,121 | (77,733) | (876)
Balance at Dec. 31, 2011 | 742,364 | 98,146 | 305,499 | 424,557 | (77,007) | (8,831)
Net Income | 62,343 |  |  | 62,343 |  |
Other comprehensive income, net of tax: |  |  |  |  |  |
Change in funded status of pension plan, net of income taxes | 412 |  |  |  |  | 412
Unrealized net holding gain on cash flow hedge, net of income taxes | 401 |  |  |  |  | 401
Unrealized net holding gain on securities available-for-sale, net of income taxes | 1,468 |  |  |  |  | 1,468
Cash dividends on common stock at $2.82 per share |  |  |  | (43,445) |  |
Cash payment for fractional shares in dividend reinvestment plan |  |  | (2) |  |  |
Common stock warrant repurchased | (2,843) |  | (2,843) |  |  |
Preferred stock repurchased |  | (100,000) |  |  |  |
Accretion of discount on preferred stock |  | 1,854 |  | (1,854) |  |
Preferred stock dividends |  |  |  | (1,571) |  |
Balance at Sep. 30, 2012 | $ 659,127 | $ 0 | $ 302,654 | $ 440,030 | $ (77,007) | $ (6,550)

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