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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
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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