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Summary of Significant Accounting Policies - Additional Information (Detail) - Jun. 30, 2015 - USD ($) $ in Millions | Total
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Summary Of Significant Accounting Policies [Line Items] |
Balance in excess of FDIC-insured limits | $ 24.8
Minimum [Member] |
Summary Of Significant Accounting Policies [Line Items] |
Ownership interest in equity method investment | 20.00%
Maximum [Member] |
Summary Of Significant Accounting Policies [Line Items] |
Ownership interest in equity method investment | 50.00%
Short-Term Investments [Member] |
Summary Of Significant Accounting Policies [Line Items] |
Original maturity period | No more than 26 weeks
Noncurrent Restricted Investments [Member] | CD [Member] |
Summary Of Significant Accounting Policies [Line Items] |
Original maturity period | No longer than approximately 26 weeks

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- Definition Summary Of Significant Accounting Policies [Line Items] + References No definition available. + Details
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- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571 + Details
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- Details
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