Derivative Instruments (Details) In Millions, unless otherwise specified			6 Months Ended
Dec. 31, 2011 USD ($)	Jun. 30, 2011 USD ($)	Dec. 31, 2011 Maximum [Member] JPY (¥)	Dec. 31, 2011 Minimum [Member] JPY (¥)
Derivative [Line Items]
Foreign currency forward exchange contracts, contract value	$ 7.7	$ 7.8
Foreign currency forward exchange contracts, expiration dates range			April 3, 2012	January 6, 2012
Foreign currency forward exchange contract range of amounts outstanding			¥ 170	¥ 100

Aggregate notional amount of foreign currency derivatives to purchase a foreign currency. Notional amount refers to the number of currency units specified in the foreign currency derivative contract.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 1B

-URI http://asc.fasb.org/extlink&oid=6935481&loc=SL5580258-113959

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Notional Amount

-URI http://asc.fasb.org/extlink&oid=6519104

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 1A

-Subparagraph (d)

-URI http://asc.fasb.org/extlink&oid=6935481&loc=SL5579245-113959

Name:	us-gaap_NotionalAmountOfForeignCurrencyDerivativePurchaseContracts
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant