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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	Mar. 31, 2014	Jun. 30, 2013
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Assets	$ 4,321	$ 10,016
Money market funds
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Assets	4,321	10,016
Level 1
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Assets	4,321	10,016
Level 1 | Money market funds
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Assets	$ 4,321	$ 10,016

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- Definition

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ 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=25499696&loc=d3e19207-110258

+ Details

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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