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Fair Value Measurement - Summary of Fair Value Hierarchy of Financial Assets and Liabilities Measured (Detail) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Jun. 30, 2012
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Assets	$ 10,016	$ 7,010
Money market funds
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Assets	10,016	7,010
Level 1
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Assets	10,016	7,010
Level 1 | Money market funds
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Assets	$ 10,016	$ 7,010

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- Definition

This element represents the aggregate of the assets reported on the balance sheet at period end measured at fair value by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258

+ Details

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

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- Details

Name:	us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration