Quarterly report pursuant to Section 13 or 15(d)

Derivative Instruments and Hedging Transactions (Exchange Rate Management) (Details)

v3.10.0.1
Derivative Instruments and Hedging Transactions (Exchange Rate Management) (Details) - USD ($)
$ in Thousands
 3 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Jun. 30, 2018
Derivative [Line Items]      
Derivative open positions expected settlement period 2 days    
Unrealized loss on foreign exchange $ (70) $ (101)  
Foreign Exchange      
Derivative [Line Items]      
Open inventory sale commitments 4,104   $ 4,130
Forward contracts      
Derivative [Line Items]      
Open inventory sale commitments $ 6,271   $ 3,026
Futures and Forward Contract      
Derivative [Line Items]      
Derivative open positions expected settlement period 30 days