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

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=36462937&loc=d3e19207-110258

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Amount of purchases of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ 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 (c)(2)
-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258

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Fair value of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258

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Fair Value of Financial Instruments - Summary of Financial Assets Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Thousands	6 Months Ended
	Dec. 31, 2015	Jun. 30, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	$ 500	$ 500
Assets:
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases	0
Fair Value, Measurements, Recurring [Member] \| Level 1
Assets:
Fair value measurement disclosure	51,793
Fair Value, Measurements, Recurring [Member] \| Level 2
Assets:
Fair value measurement disclosure	30,025
Fair Value, Measurements, Recurring [Member] \| Level 3
Assets:
Fair value measurement disclosure	500
Cash and cash equivalents \| Fair Value, Measurements, Recurring [Member] \| Level 1
Assets:
Fair value measurement disclosure	51,529
Cash and cash equivalents \| Fair Value, Measurements, Recurring [Member] \| Level 2
Assets:
Fair value measurement disclosure	0
Cash and cash equivalents \| Fair Value, Measurements, Recurring [Member] \| Level 3
Assets:
Fair value measurement disclosure	0
Certificates of Deposit [Member] \| Fair Value, Measurements, Recurring [Member] \| Level 1
Assets:
Fair value measurement disclosure	0
Certificates of Deposit [Member] \| Fair Value, Measurements, Recurring [Member] \| Level 2
Assets:
Fair value measurement disclosure	30,025
Certificates of Deposit [Member] \| Fair Value, Measurements, Recurring [Member] \| Level 3
Assets:
Fair value measurement disclosure	0
Restricted cash \| Fair Value, Measurements, Recurring [Member] \| Level 1
Assets:
Fair value measurement disclosure	264
Restricted cash \| Fair Value, Measurements, Recurring [Member] \| Level 2
Assets:
Fair value measurement disclosure	0
Restricted cash \| Fair Value, Measurements, Recurring [Member] \| Level 3
Assets:
Fair value measurement disclosure	0
Cost-method Investments [Member] \| Fair Value, Measurements, Recurring [Member] \| Level 1
Assets:
Fair value measurement disclosure	0
Cost-method Investments [Member] \| Fair Value, Measurements, Recurring [Member] \| Level 2
Assets:
Fair value measurement disclosure	0
Cost-method Investments [Member] \| Fair Value, Measurements, Recurring [Member] \| Level 3
Assets:
Fair value measurement disclosure	500
Fair Value \| Fair Value, Measurements, Recurring [Member]
Assets:
Fair value measurement disclosure	82,318
Fair Value \| Cash and cash equivalents \| Fair Value, Measurements, Recurring [Member]
Assets:
Fair value measurement disclosure	51,529
Fair Value \| Certificates of Deposit [Member] \| Fair Value, Measurements, Recurring [Member]
Assets:
Fair value measurement disclosure	30,025
Fair Value \| Restricted cash \| Fair Value, Measurements, Recurring [Member]
Assets:
Fair value measurement disclosure	264
Fair Value \| Cost-method Investments [Member] \| Fair Value, Measurements, Recurring [Member]
Assets:
Fair value measurement disclosure	$ 500