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Other Comprehensive Income (Loss) (Other Comprehensive Income (Loss) Components And Related Taxes) (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2012 | Sep. 30, 2011 | Sep. 30, 2012 | Sep. 30, 2011
Other Comprehensive Income (Loss) [Abstract] |  |  |  |
Change in pension plan assets and benefit obligations, Before-tax amount | $ 0 |  | $ 634 |
Change in pension plan assets and benefit obligations, Tax effect | 0 | 0 | 222 |
Change in pension plan assets and benefit obligations, net of income taxes | 0 | 0 | 412 |
Unrealized gains (losses) on available-for-sale securities, Before-tax amount | 1,328 | 17,532 | 2,258 | 26,451
Unrealized gains (losses) on available-for-sale securities, Tax effect | 464 | 6,136 | 790 | 9,257
Unrealized gains (losses) on available-for-sale securities, Net-of-tax amount | 864 | 11,396 | 1,468 | 17,194
Reclassification adjustment for gains realized in net income, Before-tax amount |  | (3,465) |  | (25,462)
Reclassification adjustment for gains realized in net income, Tax effect |  | (1,213) |  | (8,912)
Reclassification adjustment for gains realized in net income, Net-of-tax amount |  | (2,252) |  | (16,550)
Unrealized net holding gain (loss) on cash flow hedge, Before-tax amount | 219 | 238 | 617 | 535
Unrealized net holding gain (loss) on cash flow hedge, Tax effect | 77 | 83 | 216 | 187
Unrealized net holding gain (loss) on cash flow hedge, Net-of-tax amount | 142 | 155 | 401 | 348
Other comprehensive income (loss), Before-tax amount | 1,547 | 14,305 | 3,509 | 1,524
Other comprehensive income (loss), Tax effect | 541 | 5,006 | 1,228 | 532
Other comprehensive income (loss) | $ 1,006 | $ 9,299 | $ 2,281 | $ 992

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