Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Statement of Comprehensive Income [Abstract]
Net income		$ 63,375	$ 158,350	$ 166,186
Other comprehensive (loss) income, net of tax
Unrealized (loss) gain hedging activities, net of tax	[1]	(642)	(949)	673
Foreign currency translation adjustments, net of tax	[2]	86,894	(13,689)	(50,017)
Defined benefit pension and other postretirement benefits, net of tax (3)	[3]	1,928	(5,357)	(15,426)
Total other comprehensive (loss) income, net of tax		88,180	(19,995)	(64,770)
Total comprehensive income		$ 151,555	$ 138,355	$ 101,416

[1] Net of tax of $(230), $(326) and $207 for the years ended December 31, 2020, 2019 and 2018, respectively.

[2] Net of tax of $(66), $(108) and $(210) for the years ended December 31, 2020, 2019 and 2018, respectively.

[3] Net of tax of $401, $(1,420) and $(4,606) for the years ended December 31, 2020, 2019 and 2018, respectively.