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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 | 6 Months Ended
--- | --- | ---
Jun. 30, 2012 | Jun. 30, 2011 | Jun. 30, 2012 | Jun. 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 | 4,320 | 12,085 | 930 | 8,919
Unrealized gains (losses) on available-for-sale securities, Tax effect | 1,514 | 4,229 | 326 | 3,121
Unrealized gains (losses) on available-for-sale securities, Net-of-tax amount | 2,806 | 7,856 | 604 | 5,798
Reclassification adjustment for gains realized in net income, Before-tax amount |  | (15,362) |  | (21,997)
Reclassification adjustment for gains realized in net income, Tax effect |  | (5,377) |  | (7,699)
Reclassification adjustment for gains realized in net income, Net-of-tax amount |  | (9,985) |  | (14,298)
Unrealized net holding gain (loss) on cash flow hedge, Before-tax amount | 225 | 93 | 398 | 297
Unrealized net holding gain (loss) on cash flow hedge, Tax effect | 79 | 33 | 139 | 104
Unrealized net holding gain (loss) on cash flow hedge, Net-of-tax amount | 146 | 60 | 259 | 193
Other comprehensive income (loss), Before-tax amount | 4,545 | (3,184) | 1,962 | (12,781)
Other comprehensive income (loss), Tax effect | 1,593 | (1,115) | 687 | (4,474)
Other comprehensive income (loss) | $ 2,952 | $ (2,069) | $ 1,275 | $ (8,307)

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