Annual report pursuant to Section 13 and 15(d)

Derivatives Schedule of Fair Value and Cash Flow Hedges Including in Earnings (Details)

v3.19.1
Derivatives Schedule of Fair Value and Cash Flow Hedges Including in Earnings (Details) - USD ($)
$ in Thousands
12 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Mar. 31, 2017
Derivative [Line Items]      
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months $ 1,100    
Other Nonoperating Income (Expense) (11,214) $ (24,592) $ 3,871
Cost of Goods Sold (924,276) (860,744) (571,944)
Other Operating Income (Expense) [Member]      
Derivative [Line Items]      
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge (6,034) 0 0
Gain (Loss) on Fair Value Hedges Recognized in Earnings 1,900 0 0
Cost of sales      
Derivative [Line Items]      
Foreign Currency Cash Flow Hedge Gain (Loss) Reclassified to Earnings, Net $ (698) $ 2,420 $ (5,170)