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Pension Plan (Schedule Of Weighted-Average Assumptions For Net Periodic Benefit Cost Calculations) (Details)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Pension Plan [Abstract]
Discount rate	5.54%	5.96%	5.87%
Expected long-term rate at return on plan assets	8.00%	8.00%	8.00%
Rate of compensation increase	4.00%	4.00%	4.00%

An assumption as to the rate of return on plan assets reflecting the average rate of earnings expected on the funds invested or to be invested to provide for the benefits included in the benefit obligation.

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