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Cash, Cash Equivalents and Investments (Fair Value of Debt Securities by Contractual Maturity) (Details) - USD ($) $ in Thousands | Aug. 31, 2015 | Nov. 30, 2014
--- | --- | ---
Investments and Cash [Abstract] |  |
Due in one year or less | $ 13,093 | $ 11,140
Due after one year | 16,098 | 9,046
Total | $ 29,191 | $ 20,186

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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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Balance Type: | debit
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- References No definition available. + Details
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