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Derivative Instruments - Income Statement (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Cost of sales, Other expense/(income)
Derivative Instruments, Gain (Loss)
Amount of (Gain)/Loss Recognized			$ (648)	$ 137
Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss)
Amount of (Gain)/Loss Recognized	$ 3,468	$ (421)
Commodity Forward Derivative | Designated as Hedging Instrument [Member] | Cost of sales
Derivative Instruments, Gain (Loss)
Amount of (Gain)/Loss Recognized	3,145	(421)
Foreign currency derivatives | Not Designated as Hedging Instrument [Member] | Cost Of Good Sold Other Expense Income [Member]
Derivative Instruments, Gain (Loss)
Amount of (Gain)/Loss Recognized	(173)			159
Interest rate swap contract | Designated as Hedging Instrument [Member] | Interest expense
Derivative Instruments, Gain (Loss)
Amount of (Gain)/Loss Recognized	$ 323	$ 0
Cash Flow Hedging | Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss)
Amount of (Gain)/Loss Recognized			(7,317)	421
Cash Flow Hedging | Commodity Forward Derivative | Designated as Hedging Instrument [Member] | Cost of sales
Derivative Instruments, Gain (Loss)
Amount of (Gain)/Loss Recognized			(6,994)	421
Cash Flow Hedging | Interest rate swap contract | Designated as Hedging Instrument [Member] | Cost of sales
Derivative Instruments, Gain (Loss)
Amount of (Gain)/Loss Recognized			$ (323)	$ 0

X

- Definition

Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4A
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5618551-113959

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- Definition

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+ References

No definition available.

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