Consolidated Statements Of Shareholders' Equity (Parenthetical) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Statement of Stockholders' Equity [Abstract]
Foreign currency translation adjustment, tax (benefit)	$ (775)	$ 0	$ (775)	$ 0
Derivative financial instruments adjustment, tax (benefit)	75	(336)	24	(316)
Amortization of prior service costs and net gains or losses, tax	$ 593	$ 789	$ 1,778	$ 2,312
Cash dividends declared, per share	$ 0.12	$ 0.11	$ 0.34	$ 0.33

Aggregate dividends declared during the period for each share of common stock outstanding.

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Amount of tax expense (benefit), after reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

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Amount of tax (expense) benefit for reclassification adjustment from accumulated other comprehensive (income) loss of defined benefit plan.

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