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Cash, Cash Equivalents and Investments (Fair Value of Debt Securities by Contractual Maturity) (Details) - USD ($) $ in Thousands | May 31, 2018 | Nov. 30, 2017
--- | --- | ---
Investments and Cash [Abstract] |  |
Due in one year or less | $ 27,247 | $ 22,333
Due after one year | 19,832 | 27,812
Total | $ 47,079 | $ 50,145

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- Definition Fair value of debt securities + References No definition available. + Details
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- Definition Fair value of debt securities maturities after one year. + References No definition available. + Details
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- Definition Fair value of debt securities maturities within one year. + References No definition available. + Details
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- References No definition available. + Details
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