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Pensions And Other Postretirement Benefits (Schedule Of Amounts Included In Accumulated Other Comprehensive Income Expected To Be Recognized In Net Periodic Benefit Costs) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Loss recognition	$ 7,020
Prior service cost (credit) recognition	102
Transition obligation recognition	2
Other Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Loss recognition	720
Prior service cost (credit) recognition	$ (455)

The amounts in accumulated other comprehensive income related to gains and losses that are not recognized immediately and are expected to be recognized as components of net periodic benefit cost over the next fiscal year that follows the most recent annual statement of financial position presented.

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- Definition

The amounts in accumulated other comprehensive income related to prior service cost or credit expected to be recognized as components of net periodic benefit cost over the next fiscal year that follows the most recent annual statement of financial position presented.

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- Definition

The amounts in accumulated other comprehensive income related to transition assets (obligations), origination from the adoption of FAS 87 and 106, expected to be recognized as components of net periodic benefit cost over the next fiscal year that follows the most recent annual statement of financial position presented.

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