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Fair Value Measurements, Marketable Securities and Variable Interest Entities - Schedule of Company's Recurring Financial Assets and Liabilities (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Jun. 30, 2016
Money market funds [Member]
Assets:
Assets, Fair Value Measurements	$ 10,300	$ 20,200
Fair Value Measurements, Recurring [Member] | Revolving loan facility [Member]
Liabilities:
Liabilities, Fair Value Measurements		15,000
Fair Value Measurements, Recurring [Member] | Money market funds [Member]
Assets:
Assets, Fair Value Measurements	10,330	20,203
Fair Value Measurements, Recurring [Member] | Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] | Money market funds [Member]
Assets:
Assets, Fair Value Measurements	$ 10,330	20,203
Fair Value Measurements, Recurring [Member] | Significant Other Observable Inputs (Level 2) [Member] | Revolving loan facility [Member]
Liabilities:
Liabilities, Fair Value Measurements		$ 15,000

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
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258

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- Definition

Fair value of financial and nonfinancial obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
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