Derivative Instruments and Hedging Activities - Fair Value of Derivatives Designated and Not Designated as Hedging Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Jun. 30, 2017
Fair value of derivatives
Derivative, Fair Value, Net	$ (1,511)	$ (551)
Designated as Hedging Instrument [Member]
Fair value of derivatives
Derivative, Fair Value, Net	(1,457)	(771)
Not Designated as Hedging Instrument [Member]
Fair value of derivatives
Derivative, Fair Value, Net	(54)	220
Range Forward Contracts [Member] | Designated as Hedging Instrument [Member] | Other Current Assets [Member]
Fair value of derivatives
Derivative assets designated as hedging instruments	38	1
Range Forward Contracts [Member] | Designated as Hedging Instrument [Member] | Other Current Liabilities [Member]
Fair value of derivatives
Derivative liabilities designated as hedging instruments	(1,510)	(671)
Range Forward Contracts [Member] | Designated as Hedging Instrument [Member] | Other Assets [Member]
Fair value of derivatives
Derivative assets designated as hedging instruments	15	0
Range Forward Contracts [Member] | Designated as Hedging Instrument [Member] | Other Liabilities [Member]
Fair value of derivatives
Derivative liabilities designated as hedging instruments	0	(101)
Currency Forward Contracts [Member] | Not Designated as Hedging Instrument [Member] | Other Current Assets [Member]
Fair value of derivatives
Derivative assets designated as hedging instruments	110	358
Currency Forward Contracts [Member] | Not Designated as Hedging Instrument [Member] | Other Current Liabilities [Member]
Fair value of derivatives
Derivative liabilities designated as hedging instruments	$ (164)	$ (138)