Other Comprehensive Loss - Related Tax Effects Allocated to Each Component of Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Equity [Abstract]
Amortization of actuarial losses, before tax amount	$ (554)	$ (804)
Derivative instruments	(3,488)	339
Cumulative translation adjustment, before tax amount	(4,805)	104
Total other comprehensive income (loss), before tax amount	(8,847)	(361)
Amortization of actuarial losses, tax	107	155
Derivative instrument, tax	710	0
Cumulative translation adjustment, tax	0	0
Total other comprehensive income (loss), tax	817	155
Amortization of actuarial losses, after tax amount	(447)	(649)
Derivative instrument, after tax amount	(2,778)	339
Cumulative translation adjustment, after tax amount	(4,805)	104
Other comprehensive loss	$ (8,030)	$ (206)

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Amount before tax, after reclassification adjustments of other comprehensive income (loss).

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Amount, before reclassification, of tax expense (benefit) for gain (loss) from derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.

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Amount, after tax, of reclassification of gain (loss) from accumulated other comprehensive income (AOCI) for derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.

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Amount before tax, 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 after tax of other comprehensive income (loss) attributable to parent entity.

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