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Derivative Instruments - Income Statement (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
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Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Commodity Forward Derivative | Designated as Hedging Instrument | Cost of sales |  |  |  |
Derivative Instruments, Gain (Loss) |  |  |  |
Amount of (Gain)/Loss Recognized | $ 1,295 | $ 3,145 | $ 5,234 | $ 6,994
Interest rate swap contract | Designated as Hedging Instrument | Interest expense |  |  |  |
Derivative Instruments, Gain (Loss) |  |  |  |
Amount of (Gain)/Loss Recognized | (1,537) | 323 | (2,852) | 323
Foreign currency derivatives | Not Designated as Hedging Instrument | Cost Of Good Sold Other Expense Income [Member] |  |  |  |
Derivative Instruments, Gain (Loss) |  |  |  |
Amount of (Gain)/Loss Recognized | 243 | $ (173) | 959 | 648
Commodity derivative contracts | Not Designated as Hedging Instrument | Interest expense |  |  |  |
Derivative Instruments, Gain (Loss) |  |  |  |
Amount of (Gain)/Loss Recognized | $ 207 |  | $ 321 | $ 0

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- 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=121590274&loc=SL5618551-113959 + Details
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