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Cash, Cash Equivalents and Investments (Narrative) (Details) - position | May 31, 2018 | Nov. 30, 2017
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Cash and Cash Equivalents [Abstract] |  |
Number of investments in continuous unrealized loss position | 0 | 0

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- Definition Number of investments in debt securities measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (b)(3) -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27290-111563 + Details
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