Derivative Financial Instruments and Hedging Activities - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Minimum
Derivative [Line Items]
Foreign currency exposure hedged for forecasted sales in next three months, percent	35.00%
Foreign currency exposure hedged for forecasted sales In next three to twelve months, percent	25.00%
Foreign currency exposure hedged for forecasted sales in next 12 to 18 months, percent	50.00%
Maximum
Derivative [Line Items]
Foreign currency exposure hedged for forecasted sales in next three months, percent	90.00%
Foreign currency exposure hedged for forecasted sales In next three to twelve months, percent	75.00%
Designated as Hedging Instrument | Cash Flow Hedging
Derivative [Line Items]
AOCI gain (loss) balance expected to be reclassified in next twelve months	$ 1,800
Foreign Currency Exchange and Option Contracts, Scale 1
Derivative [Line Items]
Maximum foreign currency cash flow hedge, period (in months)	3 months
Foreign Currency Exchange and Option Contracts, Scale 2 | Minimum
Derivative [Line Items]
Foreign currency cash flow hedge, period (in months)	3 months
Foreign Currency Exchange and Option Contracts, Scale 2 | Maximum
Derivative [Line Items]
Foreign currency cash flow hedge, period (in months)	12 months
Foreign Currency Exchange and Option Contracts, Scale 3 | Minimum
Derivative [Line Items]
Foreign currency cash flow hedge, period (in months)	12 months
Foreign Currency Exchange and Option Contracts, Scale 3 | Maximum
Derivative [Line Items]
Foreign currency cash flow hedge, period (in months)	18 months
Foreign currency exchange contracts | Not Designated as Hedging Instrument | Interest income and miscellaneous income (expense), net
Derivative [Line Items]
Non-designated hedged item, gain (loss) recognized in income	$ 47	$ 0	$ 0
Foreign currency exchange contracts | Not Designated as Hedging Instrument | Other operating income, net
Derivative [Line Items]
Non-designated hedged item, gain (loss) recognized in income	0	895	0
Interest rate swaps | Not Designated as Hedging Instrument | Interest income and miscellaneous income (expense), net
Derivative [Line Items]
Non-designated hedged item, gain (loss) recognized in income	$ 0	$ (1,219)	$ (4,391)
New Zealand JV | Foreign currency exchange contracts | Minimum
Derivative [Line Items]
Percentage of foreign currency exposure, next three months	60.00%
New Zealand JV | Foreign currency exchange contracts | Maximum
Derivative [Line Items]
Percentage of foreign currency exposure, next three months	100.00%
Percentage of foreign currency exposure, next three to six months	75.00%
Percentage of foreign currency exposure, next six to twelve months	50.00%
New Zealand JV | Foreign Currency Exchange And Option Contracts, Scale 4 | Minimum
Derivative [Line Items]
Foreign currency cash flow hedge, period (in months)	3 months
New Zealand JV | Foreign Currency Exchange And Option Contracts, Scale 5 | Minimum
Derivative [Line Items]
Foreign currency cash flow hedge, period (in months)	3 months
New Zealand JV | Foreign Currency Exchange And Option Contracts, Scale 5 | Maximum
Derivative [Line Items]
Foreign currency cash flow hedge, period (in months)	6 months
New Zealand JV | Foreign Currency Exchange And Option Contracts, Scale 6 | Minimum
Derivative [Line Items]
Foreign currency cash flow hedge, period (in months)	6 months
New Zealand JV | Foreign Currency Exchange And Option Contracts, Scale 6 | Maximum
Derivative [Line Items]
Foreign currency cash flow hedge, period (in months)	12 months