Significant Accounting Policies (Changes In Accumulated Other Comprehensive Loss, Net Of Tax) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Balance at beginning of period, Pension and Postretirement Benefit Plans	$ (84,204)
Balance at beginning of period, Foreign Currency	5,076
Balance at beginning of period, Unamortized Value of Terminated Forward Starting Interest Rate Swap	(4,762)
Balance at beginning of period, Accumulated Other Comprehensive Loss	(83,890)	(54,564)
Other comprehensive earnings, net of tax, Pension and Postretirement Benefit Plans	1,548
Other comprehensive earnings, net of tax, Foreign Currency	199
Other comprehensive earnings, net of tax, Unamortized Value of Terminated Forward Starting Interest Rate Swap	152
Other comprehensive earnings, net of tax, Accumulated Other Comprehensive Loss	1,902
Balance at end of period, Pension and Postretirement Benefit Plans	(82,656)
Balance at end of period, Foreign Currency	5,275
Balance at end of period, Unamortized Value of Terminated Forward Starting Interest Rate Swap	(4,610)
Balance at end of period, Accumulated Other Comprehensive Loss	(81,991)	(54,564)
Accumulated Other Comprehensive Loss [Member]
Balance at beginning of period, Accumulated Other Comprehensive Loss	(83,890)
Other comprehensive earnings, net of tax, Accumulated Other Comprehensive Loss	1,899
Balance at end of period, Accumulated Other Comprehensive Loss	$ (81,991)