Quarterly report pursuant to Section 13 or 15(d)

Derivative Instruments and Hedging Transactions (Narrative) (Details)

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Derivative Instruments and Hedging Transactions (Narrative) (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2017
Dec. 31, 2016
Jun. 30, 2017
Derivative [Line Items]          
Derivative open positions expected settlement period     30 days    
Unrealized gain (loss) on foreign exchange $ 139 $ (3) $ 38 $ (9)  
Foreign Exchange          
Derivative [Line Items]          
Open inventory sale commitments 2,300   2,300   $ 2,200
Forward contracts          
Derivative [Line Items]          
Open inventory sale commitments $ 3,800   $ 3,800   $ 2,200