Annual report pursuant to Section 13 and 15(d)

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

v3.6.0.2
Stockholders' Equity - Significant Option Groups Exercisable Option and its Price and Contractual Life (Detail)
12 Months Ended
Nov. 30, 2016
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Outstanding, Outstanding | shares 1,142,010
Outstanding, Weighted Average Remaining Contractual Life (Years) 4 years 11 months 27 days
Outstanding, Weighted Average Exercise Price $ 2.36
Exercisable, Outstanding | shares 1,044,604
Exercisable, Weighted Average Exercise Price $ 2.28
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 441,781
Outstanding, Weighted Average Remaining Contractual Life (Years) 4 years 8 months 27 days
Outstanding, Weighted Average Exercise Price $ 1.72
Exercisable, Outstanding | shares 441,781
Exercisable, Weighted Average Exercise Price $ 1.72
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 473,000
Outstanding, Weighted Average Remaining Contractual Life (Years) 3 years 6 months 4 days
Outstanding, Weighted Average Exercise Price $ 2.57
Exercisable, Outstanding | shares 473,000
Exercisable, Weighted Average Exercise Price $ 2.57
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) 8 years 6 months 26 days
Outstanding, Weighted Average Exercise Price $ 3.18
Exercisable, Outstanding | shares 129,823
Exercisable, Weighted Average Exercise Price $ 3.16