Derivative Instruments and Hedging Activities - Fair Value of Derivatives Designated and Not Designated as Hedging Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Jun. 30, 2015
Fair value of derivatives
Derivative, Fair Value, Net	$ 724	$ 2,634
Designated as Hedging Instrument [Member]
Fair value of derivatives
Derivative, Fair Value, Net	783	2,626
Not Designated as Hedging Instrument [Member]
Fair value of derivatives
Derivative, Fair Value, Net	(59)	8
Range Forward Contracts [Member] | Designated as Hedging Instrument [Member] | Other Current Assets [Member]
Fair value of derivatives
Derivative assets designated as hedging instruments	762	2,626
Range Forward Contracts [Member] | Designated as Hedging Instrument [Member] | Other Assets [Member]
Fair value of derivatives
Derivative assets designated as hedging instruments	21	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	16	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	$ (75)	$ (44)