Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Statement of Comprehensive Income [Abstract]
Net loss	$ (2,659)	$ 59,970
Other comprehensive income, net of tax:
Foreign currency translation, net of tax of $(4,067) in 2019	21,274	15,211
Net unrealized gain on cash flow hedges, net of tax of $56 and $162, respectively	163	486
Net unrealized gain (loss) on investment securities, net of tax of $964 and $(1,366), respectively	2,816	(3,992)
Amortization of pension and postretirement costs, net of tax benefits of $2,649 and $2,803, respectively	6,636	8,172
Other comprehensive income, net of tax	30,889	19,877
Comprehensive income	$ 28,230	$ 79,847