Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2019	Mar. 31, 2018
Statement of Comprehensive Income [Abstract]
Net income		$ 33,992	$ 38,818
Other comprehensive (loss) income, net of tax
Unrealized (loss) gain on hedging activities, net of tax (1)	[1]	(568)	396
Foreign currency translation adjustments, net of tax (2)	[2]	(9,225)	26,953
Defined benefit pension and other postretirement benefits, net of tax (3)	[3]	1,615	3,164
Total other comprehensive (loss) income, net of tax		(8,178)	30,513
Total comprehensive income		25,814	69,331
Unrealized (loss) gain on hedging activities, tax		(175)	148
Foreign currency translation adjustment, tax		(100)	162
Defined benefit pension and other postretirement benefits, tax		$ 540	$ 1,257

[1] Net of tax of $(175) and $148 for the three months ended March 31, 2019 and 2018, respectively.

[2] Net of tax of $(100) and $162 for the three months ended March 31, 2019 and 2018, respectively.

[3] Net of tax of $540 and $1,257 for the three months ended March 31, 2019 and 2018, respectively.