Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2012		Jun. 30, 2011		Jun. 30, 2012		Jun. 30, 2011
Consolidated Statements of Comprehensive Income [Abstract]
Net income	$ 24,831		$ 22,332		$ 47,038		$ 41,404
Other comprehensive (loss) income, net of tax
Unrealized (loss) gain on hedging activities, net of tax (1)	(633)	[1]	(238)	[1]	(397)	[1]	50	[1]
Foreign currency translation adjustments, net of tax (2)	(25,164)	[2]	21,647	[2]	(10,455)	[2]	39,793	[2]
Defined benefit pension and other postretirement benefits, net of tax (3)	2,706	[3]	1,008	[3]	3,911	[3]	1,330	[3]
Total other comprehensive (loss) income, net of tax	(23,091)		22,417		(6,941)		41,173
Total comprehensive income	$ 1,740		$ 44,749		$ 40,097		$ 82,577

[1] Net of tax of $(403) and $(85) for the three months ended June 30, 2012 and 2011, respectively, and $(319) and $113 for the six months ended June 30, 2012 and 2011, respectively.

[2] Net of tax of $(1,209) and $(53) for the three months ended June 30, 2012 and 2011, respectively, and $(492) and $1,440 for the six months ended June 30, 2012 and 2011, respectively.

[3] Net of tax of $1,144 and $466 for the three months ended June 30, 2012 and 2011, respectively, and $2,161 and $891 for the six months ended June 30, 2012 and 2011, respectively.