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Stockholders' Equity - Significant Option Groups Outstanding and Exercisable Option and its Price and Contractual Life (Detail) | 12 Months Ended
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Nov. 30, 2018 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Outstanding, Outstanding | shares | 1,001,365
Outstanding, Weighted Average Remaining Contractual Life (Years) | 3 years 11 months 19 days
Outstanding, Weighted Average Exercise Price | $ 2.77
Exercisable, Outstanding | shares | 961,111
Exercisable, Weighted Average Exercise Price | $ 2.58
Range 1 [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Range of Exercise Prices Minimum | 1.01
Range of Exercise Prices Maximum | $ 2.00
Outstanding, Outstanding | shares | 422,500
Outstanding, Weighted Average Remaining Contractual Life (Years) | 2 years 11 months 4 days
Outstanding, Weighted Average Exercise Price | $ 1.73
Exercisable, Outstanding | shares | 422,500
Exercisable, Weighted Average Exercise Price | $ 1.73
Range 2 [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Range of Exercise Prices Minimum | 2.01
Range of Exercise Prices Maximum | $ 3.00
Outstanding, Outstanding | shares | 275,000
Outstanding, Weighted Average Remaining Contractual Life (Years) | 2 years 3 months 25 days
Outstanding, Weighted Average Exercise Price | $ 2.70
Exercisable, Outstanding | shares | 275,000
Exercisable, Weighted Average Exercise Price | $ 2.70
Range 3 [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Range of Exercise Prices Minimum | 3.01
Range of Exercise Prices Maximum | $ 4.00
Outstanding, Outstanding | shares | 227,229
Outstanding, Weighted Average Remaining Contractual Life (Years) | 7 years 2 months 1 day
Outstanding, Weighted Average Exercise Price | $ 3.18
Exercisable, Outstanding | shares | 223,062
Exercisable, Weighted Average Exercise Price | $ 3.18
Range 4 [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Range of Exercise Prices Minimum | 6.01
Range of Exercise Prices Maximum | $ 7.00
Outstanding, Outstanding | shares | 25,000
Outstanding, Weighted Average Remaining Contractual Life (Years) | 8 years 4 months 2 days
Outstanding, Weighted Average Exercise Price | $ 6.95
Exercisable, Outstanding | shares | 23,334
Exercisable, Weighted Average Exercise Price | $ 6.98
Range 5 [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Range of Exercise Prices Minimum | 7.01
Range of Exercise Prices Maximum | $ 8.00
Outstanding, Outstanding | shares | 51,636
Outstanding, Weighted Average Remaining Contractual Life (Years) | 5 years 29 days
Outstanding, Weighted Average Exercise Price | $ 7.85
Exercisable, Outstanding | shares | 17,215
Exercisable, Weighted Average Exercise Price | $ 7.85

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- Definition The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range. + 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 (g) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition The number of shares reserved for issuance pertaining to the outstanding exercisable stock options as of the balance sheet date in the customized range of exercise prices for which the market and performance vesting condition has been satisfied. + 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 (c)(iii) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices. + 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 (c)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range. + 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 (g) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition Weighted average exercise price as of the balance sheet date for those equity-based payment arrangements exercisable and outstanding. + 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 (c)(1)(iii) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition Weighted average remaining contractual term of outstanding stock options, 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 (e)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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