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Consolidated Statements Of Changes In Stockholders' Equity (USD $) In Thousands, except Share data, unless otherwise specified | Preferred Stock [Member] | Common Stock [Member] | Retained Earnings [Member] | Treasury Stock [Member] | Accumulated Other Comprehensive Income (Loss) [Member] | Comprehensive Income (Loss) [Member] | Total
--- | --- | --- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2008 | $ 95,721 | $ 305,507 | $ 438,504 | $ (207,665) | $ 10,596 |  | $ 642,663
Shares outstanding, beginning balance at Dec. 31, 2008 | 100,000 | 13,971,727 |  |  |  |  |
Net income |  |  | 74,192 |  |  | 74,192 | 74,192
Other comprehensive income (loss), net of tax: |  |  |  |  |  |  |
Change in funded status of pension plan, net of income taxes |  |  |  |  | 6,283 | 6,283 | 6,283
Unrealized net holding gain (loss) on cash flow hedge, net of income taxes |  |  |  |  | 295 | 295 | 295
Unrealized net holding gain (loss) on securities available-for-sale, net of income taxes |  |  |  |  | (1,513) | (1,513) | (1,513)
Total comprehensive income |  |  |  |  |  | 79,257 |
Cash dividends paid per share |  |  | (53,563) |  |  |  | (53,563)
Reissuance of common stock from treasury shares held, shares |  | 904,072 |  |  |  |  |
Reissuance of common stock from treasury shares held |  |  | (29,299) | 81,710 |  |  | 52,411
Cash payment for fractional shares in dividend reinvestment plan |  | (2) |  |  |  |  | (2)
Fractional shares issued in dividend reinvestment plan |  | (39) |  |  |  |  |
Common stock warrants issued |  | 1,064 |  |  |  |  | 1,064
Accretion of discount on preferred stock | 762 |  | (762) |  |  |  |
Preferred stock dividends |  |  | (5,000) |  |  |  | (5,000)
Treasury stock reissued for director grants, shares |  | 7,020 |  |  |  |  |
Treasury stock reissued for director grants |  |  | (200) | 634 |  |  | 434
Balance at Dec. 31, 2009 | 96,483 | 306,569 | 423,872 | (125,321) | 15,661 |  | 717,264
Shares outstanding, ending balance at Dec. 31, 2009 | 100,000 | 14,882,780 |  |  |  |  |
Net income |  |  | 58,101 |  |  | 58,101 | 58,101
Other comprehensive income (loss), net of tax: |  |  |  |  |  |  |
Change in funded status of pension plan, net of income taxes |  |  |  |  | (2,427) | (2,427) | (2,427)
Unrealized net holding gain (loss) on cash flow hedge, net of income taxes |  |  |  |  | (98) | (98) | (98)
Unrealized net holding gain (loss) on securities available-for-sale, net of income taxes |  |  |  |  | (15,004) | (15,004) | (15,004)
Total comprehensive income |  |  |  |  |  | 40,572 |
Cash dividends paid per share |  |  | (57,076) |  |  |  | (57,076)
Reissuance of common stock from treasury shares held, shares |  | 509,184 |  |  |  |  |
Reissuance of common stock from treasury shares held |  | (898) | (12,729) | 46,954 |  |  | 33,327
Cash payment for fractional shares in dividend reinvestment plan |  | (4) |  |  |  |  | (4)
Fractional shares issued in dividend reinvestment plan |  | 50 |  |  |  |  |
Common stock warrants issued |  | 176 |  |  |  |  | 176
Common stock warrants expired |  | (166) | 166 |  |  |  |
Accretion of discount on preferred stock | 807 |  | (807) |  |  |  |
Preferred stock dividends |  |  | (5,000) |  |  |  | (5,000)
Treasury stock reissued for director grants, shares |  | 7,020 |  |  |  |  |
Treasury stock reissued for director grants |  |  | (185) | 634 |  |  | 449
Balance at Dec. 31, 2010 | 97,290 | 305,677 | 406,342 | (77,733) | (1,868) |  | 729,708
Shares outstanding, ending balance at Dec. 31, 2010 | 100,000 | 15,398,934 |  |  |  |  |
Net income |  |  | 82,140 |  |  | 82,140 | 82,140
Other comprehensive income (loss), net of tax: |  |  |  |  |  |  |
Change in funded status of pension plan, net of income taxes |  |  |  |  | (5,027) | (5,027) | (5,027)
Unrealized net holding gain (loss) on cash flow hedge, net of income taxes |  |  |  |  | 512 | 512 | 512
Unrealized net holding gain (loss) on securities available-for-sale, net of income taxes |  |  |  |  | (2,448) | (2,448) | (2,448)
Total comprehensive income |  |  |  |  |  | 75,117 |
Cash dividends paid per share |  |  | (57,907) |  |  |  | (57,907)
Cash payment for fractional shares in dividend reinvestment plan |  | (2) |  |  |  |  | (2)
Fractional shares issued in dividend reinvestment plan |  | (42) |  |  |  |  |
Common stock warrants expired |  | (176) | 176 |  |  |  |
Accretion of discount on preferred stock | 856 |  | (856) |  |  |  |
Preferred stock dividends |  |  | (5,000) |  |  |  | (5,000)
Treasury stock reissued for director grants, shares |  | 7,020 |  |  |  |  |
Treasury stock reissued for director grants |  |  | (338) | 726 |  |  | 388
Balance at Dec. 31, 2011 | $ 98,146 | $ 305,499 | $ 424,557 | $ (77,007) | $ (8,831) |  | $ 742,364
Shares outstanding, ending balance at Dec. 31, 2011 | 100,000 | 15,405,912 |  |  |  |  |

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