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Income Taxes (Summary Of Effective Income Tax Rate And The Federal Statutory Income Tax Rate) (Details)
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12 Months Ended | ||
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Dec. 31, 2014
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Dec. 31, 2013
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Dec. 31, 2012
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| Income Taxes [Abstract] | |||
| Statutory tax rate | 35.00% | 35.00% | 34.00% |
| Low-income housing credits | (0.50%) | (0.90%) | (1.80%) |
| Tax-exempt interest income | (5.10%) | (6.30%) | (7.50%) |
| Bank owned life insurance income | (1.50%) | (1.70%) | (1.70%) |
| State income taxes, net of federal tax benefit | 1.30% | 1.20% | 1.10% |
| Other, net | (0.80%) | (0.30%) | 0.70% |
| Effective income tax rate | 28.40% | 27.00% | 24.80% |