Derivative Instruments and Hedging Activities - Fair Value of Derivatives Designated and Not Designated as Hedging Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Jun. 30, 2015
Fair value of derivatives
Derivative, Fair Value, Net	$ (156)	$ 2,634
Designated as Hedging Instrument [Member]
Fair value of derivatives
Derivative, Fair Value, Net	(280)	2,626
Not Designated as Hedging Instrument [Member]
Fair value of derivatives
Derivative, Fair Value, Net	124	8
Range Forward Contracts [Member] | Designated as Hedging Instrument [Member] | Other Current Assets [Member]
Fair value of derivatives
Derivative assets designated as hedging instruments	12	2,626
Range Forward Contracts [Member] | Designated as Hedging Instrument [Member] | Other Current Liabilities [Member]
Fair value of derivatives
Derivative liabilities designated as hedging instruments	(285)	0
Range Forward Contracts [Member] | Designated as Hedging Instrument [Member] | Other Liabilities [Member]
Fair value of derivatives
Derivative liabilities designated as hedging instruments	(7)	0
Currency Forward Contracts [Member] | Not Designated as Hedging Instrument [Member] | Other Current Assets [Member]
Fair value of derivatives
Derivative assets designated as hedging instruments	143	52
Currency Forward Contracts [Member] | Not Designated as Hedging Instrument [Member] | Other Current Liabilities [Member]
Fair value of derivatives
Derivative liabilities designated as hedging instruments	$ (19)	$ (44)