Fair Value Measurements, Cash Equivalents and Variable Interest Entities - Additional Information (Detail) - USD ($)	Mar. 31, 2017	Jun. 30, 2016
VIE not primary beneficiary [Member]
Schedule of Money Market Funds and Variable Interest Entities [Line Items]
Maximum exposure to loss as a result of unconsolidated VIE	$ 2,500,000
VIE not primary beneficiary [Member] \| Other assets, noncurrent [Member]
Schedule of Money Market Funds and Variable Interest Entities [Line Items]
Interest recognized at cost	2,500,000	$ 2,500,000
Money market funds [Member]
Schedule of Money Market Funds and Variable Interest Entities [Line Items]
Cash and cash equivalents	$ 10,425,000	$ 20,203,000

Schedule of money market funds and variable interest entities.

No definition available.

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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=66048111&loc=d3e19207-110258

+ Details

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- Definition

The reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph b
-URI http://asc.fasb.org/extlink&oid=64801991&loc=d3e5728-111685

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=64801991&loc=d3e5747-111685

+ Details

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- Definition

Carrying amount of the assets in the reporting entity's statement of financial position that relate to the reporting entity's variable interest in the Variable Interest Entity (VIE), where the reporting entity is not the VIE's primary beneficiary.

+ References

+ Details

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- Details

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- Details

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