Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013		Mar. 31, 2012
Statement of Income and Comprehensive Income [Abstract]
Net income	$ 13,472		$ 22,207
Other comprehensive (loss) income, net of tax
Unrealized gain on hedging activities, net of tax (1)	427	[1]	236	[1]
Foreign currency translation adjustments, net of tax (2)	(14,505)	[2]	14,709	[2]
Defined benefit pension and other postretirement benefits, net of tax (3)	2,410	[3]	1,205	[3]
Total other comprehensive (loss) income, net of tax	(11,668)		16,150
Total comprehensive income	1,804		38,357
Unrealized gain on hedging activities, tax	188		84
Foreign currency translation adjustment, tax	(101)		717
Defined benefit pension and other postretirement benefits, tax	$ 2,838		$ 1,017

[1] Net of tax of $188 and $84 for the three months ended March 31, 2013 and 2012, respectively.

[2] Net of tax of $(101) and $717 for the three months ended March 31, 2013 and 2012, respectively.

[3] Net of tax of $2,838 and $1,017 for the three months ended March 31, 2013 and 2012, respectively.