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Fair Value Measurements, Marketable Securities and Variable Interest Entities - Schedule of Company's Financial Assets and Liabilities (Detail) - USD ($) $ in Thousands	Jun. 30, 2015	Jun. 30, 2014
Assets:
Assets, Fair Value Measurements		$ 77,750
Liabilities:
Liabilities, Fair Value Measurements	$ 15,049	77,893
Revolving loan facility [Member]
Liabilities:
Liabilities, Fair Value Measurements	15,000
Promissory Note [Member]
Liabilities:
Liabilities, Fair Value Measurements	49	603
Term loan facility [Member]
Liabilities:
Liabilities, Fair Value Measurements		76,660
Interest rate swap [Member]
Liabilities:
Liabilities, Fair Value Measurements		630
U.S. municipal securities [Member]
Assets:
Assets, Fair Value Measurements		12,816
Certificates of deposit [Member]
Assets:
Assets, Fair Value Measurements		26,293
Money market funds [Member]
Assets:
Assets, Fair Value Measurements	20,156	38,641
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Assets:
Assets, Fair Value Measurements		38,641
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Money market funds [Member]
Assets:
Assets, Fair Value Measurements	20,156	38,641
Significant Other Observable Inputs (Level 2) [Member]
Assets:
Assets, Fair Value Measurements		39,109
Liabilities:
Liabilities, Fair Value Measurements	15,049	77,893
Significant Other Observable Inputs (Level 2) [Member] | Revolving loan facility [Member]
Liabilities:
Liabilities, Fair Value Measurements	15,000
Significant Other Observable Inputs (Level 2) [Member] | Promissory Note [Member]
Liabilities:
Liabilities, Fair Value Measurements	$ 49	603
Significant Other Observable Inputs (Level 2) [Member] | Term loan facility [Member]
Liabilities:
Liabilities, Fair Value Measurements		76,660
Significant Other Observable Inputs (Level 2) [Member] | Interest rate swap [Member]
Liabilities:
Liabilities, Fair Value Measurements		630
Significant Other Observable Inputs (Level 2) [Member] | U.S. municipal securities [Member]
Assets:
Assets, Fair Value Measurements		12,816
Significant Other Observable Inputs (Level 2) [Member] | Certificates of deposit [Member]
Assets:
Assets, Fair Value Measurements		$ 26,293

X

- 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



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- Definition

Fair value of financial and nonfinancial obligations.

+ References

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



-Publisher FASB



-Name Accounting Standards Codification



-Topic 820



-SubTopic 10



-Section 50



-Paragraph 2



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