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Auction Rate Securities - Additional Information (Detail) $ in Millions | 3 Months Ended
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Sep. 30, 2016 USD ($)
Schedule of Available-for-sale Securities [Line Items] |
Auction Rate Securities with fair value having no stated maturity | $ 1.5
Maturity period one | 2018
Auction Rate Securities Investments [Member] |
Schedule of Available-for-sale Securities [Line Items] |
Auction Rate Securities with fair value maturing in fiscal year 2018 | $ 7.1

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- Definition Auction rate securities with fair value having no stated maturity. + References No definition available. + Details
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- Definition Amount of available-for-sale debt securities at fair value that do not have a single maturity date and which the entity has decided to disclose separately rather than allocating the fair value over several maturity groupings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27198-111563 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27161-111563 + Details
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