Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity - Significant Option Groups Outstanding and Exercisable Option and its Price and Contractual Life (Detail)

v3.3.1.900
Stockholders' Equity - Significant Option Groups Outstanding and Exercisable Option and its Price and Contractual Life (Detail)
 12 Months Ended
Nov. 30, 2015
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Outstanding, Outstanding | shares 968,930
Outstanding, Weighted Average Remaining Contractual Life (Years) 5 years 4 days
Outstanding, Weighted Average Exercise Price $ 2.17
Exercisable, Outstanding | shares 953,927
Exercisable, Weighted Average Exercise Price $ 2.16
Range 1 [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Range of Exercise Prices Minimum 0.42
Range of Exercise Prices Maximum $ 1.01
Outstanding, Outstanding | shares 0
Outstanding, Weighted Average Remaining Contractual Life (Years) 0 years
Outstanding, Weighted Average Exercise Price $ 0.00
Exercisable, Outstanding | shares 0
Exercisable, Weighted Average Exercise Price $ 0.00
Range 2 [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
Outstanding, Outstanding | shares 465,930
Outstanding, Weighted Average Remaining Contractual Life (Years) 5 years 5 months 3 days
Outstanding, Weighted Average Exercise Price $ 1.72
Exercisable, Outstanding | shares 465,930
Exercisable, Weighted Average Exercise Price $ 1.72
Range 3 [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
Outstanding, Outstanding | shares 480,500
Outstanding, Weighted Average Remaining Contractual Life (Years) 4 years 5 months 23 days
Outstanding, Weighted Average Exercise Price $ 2.56
Exercisable, Outstanding | shares 480,500
Exercisable, Weighted Average Exercise Price $ 2.56
Range 4 [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Range of Exercise Prices Minimum 3
Range of Exercise Prices Maximum $ 4
Outstanding, Outstanding | shares 22,500
Outstanding, Weighted Average Remaining Contractual Life (Years) 6 years 7 months 10 days
Outstanding, Weighted Average Exercise Price $ 3.08
Exercisable, Outstanding | shares 7,497
Exercisable, Weighted Average Exercise Price $ 3.08