Quarterly report pursuant to Section 13 or 15(d)

Financial Instruments - Cash Flow Hedge Impact on Income Statement (Details)

v3.19.2
Financial Instruments - Cash Flow Hedge Impact on Income Statement (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Derivative        
Cost of goods sold $ (316,180) $ (326,309) $ (594,491) $ (614,385)
Interest (expense) income (28,540) (27,221) (57,158) (56,384)
Gain (loss) on cash flow hedging relationships | Amount of gain (loss) reclassified from AOCI into income        
Derivative        
Cost of goods sold (87) (99) 104 (71)
Interest (expense) income $ (169) $ (58) $ (292) $ (93)