Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 7,406	$ 5,286
Foreign currency translation adjustments	(13,903)	(5,163)
Net change in:
Deferred gains (losses) on cash flow hedges, net of taxes of $401 and $(834), respectively	(1,317)	2,222
Unrecognized retirement obligations, net of taxes of $51 and $(145), respectively	(101)	846
Other comprehensive loss	(15,321)	(2,095)
Comprehensive income (loss)	$ (7,915)	$ 3,191

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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