Consolidated Statements of Comprehensive Income (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Consolidated Statements of Comprehensive Income [Abstract]
Net (loss) income	$ (40,219)	$ 4,085
Other comprehensive income before income taxes
Foreign currency translation adjustments	2,606	3,907
Actuarial loss associated with pension and postretirement benefit plans	(909)
Write off of terminated swap costs	1,152
Amortization of terminated swap costs	1,591	3,677
Other comprehensive income, before income taxes	4,440	7,584
Income tax expense related to components of other comprehensive income	(739)	(1,459)
Other comprehensive income, net of tax	3,701	6,125
Comprehensive (loss) income	$ (36,518)	$ 10,210