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Stockholders' Equity - Fair Value of Options Granted (Detail) - Service-Based Vesting Condition Options [Member] | 3 Months Ended | 6 Months Ended
--- | --- | ---
May 31, 2019 | May 31, 2018 | May 31, 2019 | May 31, 2018
Weighted average values: |  |  |  |
Expected life | 5 years | 5 years | 5 years | 5 years
Measurement Input, Expected Dividend Rate [Member] |  |  |  |
Weighted average values: |  |  |  |
Expected dividends | 0 | 0 | 0 | 0
Measurement Input, Price Volatility [Member] |  |  |  |
Weighted average values: |  |  |  |
Expected dividends | 51.2 | 50.8 | 51.2 | 50.8
Measurement Input, Risk Free Interest Rate [Member] |  |  |  |
Weighted average values: |  |  |  |
Expected dividends | 2.31 | 2.67 | 2.31 | 2.67

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- Definition Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(i) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.D.2) -URI http://asc.fasb.org/extlink&oid=115993241&loc=d3e301413-122809 + Details
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