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Benefit Plans (Weighted Average Assumptions Used To Determine Net Periodic Benefit Cost) (Details)
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Benefit Plans [Abstract]    
Discount Rate 5.50% 6.00%
Rate of compensation increase 3.00% 3.00%
Expected long-term return on plan assets 7.75% 7.75%