Consolidated Statements Of Comprehensive Income (Loss) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Consolidated Statements Of Comprehensive Income (Loss) [Abstract]
Net income	$ 1,290	$ 7,353	$ 5,567	$ 10,351
Other comprehensive income (loss):
Foreign currency translation adjustment (net of tax benefit)	(13,745)	(16,268)	(12,880)	(11,295)
Derivative financial instruments adjustment (net of tax benefit)	(22)	(718)	(540)	(247)
Amortization of prior service costs and net gains or losses (net of tax)	2,312	1,631	4,625	3,262
Other comprehensive loss	(11,455)	(15,355)	(8,795)	(8,280)
Comprehensive income (loss)	$ (10,165)	$ (8,002)	$ (3,228)	$ 2,071