Accumulated Other Comprehensive Income (Components Of Accumulated Other Comprehensive Income (Loss)) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	$ 17,286	$ 61,425
Cumulative Currency Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	69,282	134,573	113,344
Before tax income (loss)	(31,249)	(65,291)	21,229
Income tax effect
Other comprehensive income (loss)	(31,249)	(65,291)	21,229
Balance	38,033	69,282	134,573
Foreign Currency Gains And (Losses) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	19,095	(21,319)	(22,982)
Before tax income (loss)	(115)	38,813	3,219
Income tax effect	(1,668)	1,601	(1,556)
Other comprehensive income (loss)	(1,783)	40,414	1,663
Balance	17,312	19,095	(21,319)
Unrealized (Losses) Gains On Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(933)	(250)
Before tax income (loss)	700	(1,101)	(403)
Income tax effect	(266)	418	153
Other comprehensive income (loss)	434	(683)	(250)
Balance	(499)	(933)	(250)
Pension And Postretirement Benefit Plans [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(26,019)	(30,490)	(17,955)
Before tax income (loss)	(16,247)	7,363	(16,807)
Income tax effect	4,706	(2,892)	4,272
Other comprehensive income (loss)	(11,541)	4,471	(12,535)
Balance	(37,560)	(26,019)	(30,490)
Accumulated Other Comprehensive Income [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	61,425	82,514	72,407
Before tax income (loss)	(46,911)	(20,216)	7,238
Income tax effect	2,772	(873)	2,869
Other comprehensive income (loss)	(44,139)	(21,089)	10,107
Balance	$ 17,286	$ 61,425	$ 82,514