Quarterly report pursuant to Section 13 or 15(d)

Derivative Instruments and Hedging Activities - Schedule of Notional Amount (Details)

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Derivative Instruments and Hedging Activities - Schedule of Notional Amount (Details) - Derivatives designated as hedging instruments - USD ($)
$ in Thousands
 6 Months Ended 12 Months Ended
Dec. 31, 2018
Jun. 30, 2018
Purchase | Other foreign currency hedge contracts    
Derivative    
Derivative, notional amount $ 163,758 $ 130,442
Purchase | Cash flow hedge contracts - foreign currency    
Derivative    
Derivative, notional amount 777 8,116
Sell | Other foreign currency hedge contracts    
Derivative    
Derivative, notional amount 173,793 154,442
Sell | Cash flow hedge contracts - foreign currency    
Derivative    
Derivative, notional amount $ 84,302 $ 115,032
Maximum    
Derivative    
Remaining maturity 10 months 10 months