Derivative Instruments and Hedging Activities - Fair Value of Derivatives Designated and Not Designated as Hedging Instruments (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Jun. 30, 2014
Fair value of derivatives
Total derivatives designated as hedging instruments	$ 5,862	$ 220
Total derivatives not designated as hedging instruments	2,694	(1,020)
Total derivatives	8,556	(800)
Range Forward Contracts [Member] \| Designated as Hedging Instrument [Member] \| Other Current Assets [Member]
Fair value of derivatives
Derivative assets designated as hedging instruments	5,862	184
Range Forward Contracts [Member] \| Designated as Hedging Instrument [Member] \| Other Current Liabilities [Member]
Fair value of derivatives
Derivative liabilities designated as hedging instruments	0	(6)
Range Forward Contracts [Member] \| Designated as Hedging Instrument [Member] \| Other Assets [Member]
Fair value of derivatives
Derivative assets designated as hedging instruments	0	42
Currency Forward Contracts [Member] \| Not Designated as Hedging Instrument [Member] \| Other Current Assets [Member]
Fair value of derivatives
Derivative assets designated as hedging instruments	3,790	27
Currency Forward Contracts [Member] \| Not Designated as Hedging Instrument [Member] \| Other Current Liabilities [Member]
Fair value of derivatives
Derivative liabilities designated as hedging instruments	$ (1,096)	$ (1,047)

Derivatives designated as hedging instrument, fair value.

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- Definition

Derivatives not designated as hedging instrument, fair value.

+ References

No definition available.

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- Definition

Fair values as of the balance sheet date of the net amount of all assets and liabilities resulting from contracts that meet the criteria of being accounted for as derivative instruments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 45

-Paragraph 5

-URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958

+ Details

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- Definition

Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 20

-Section 50

-Paragraph 3

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=34720828&loc=SL20225862-175312

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 4B

-Subparagraph (a),(c)

-URI http://asc.fasb.org/extlink&oid=35706170&loc=SL5624163-113959

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 20

-Section 55

-Paragraph 7

-URI http://asc.fasb.org/extlink&oid=36459792&loc=SL20226000-175313

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- Definition

Fair value, before effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

+ References

+ Details

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