Quarterly report pursuant to Section 13 or 15(d)

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

v3.22.2
Stockholders' Equity - Significant Option Groups Outstanding and Exercisable Option and its Price and Contractual Life (Detail)
6 Months Ended
May 31, 2022
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Outstanding, Outstanding | shares 495,943
Outstanding, Weighted Average Remaining Contractual Life (Years) 4 years 5 months 26 days
Outstanding, Weighted Average Exercise Price $ 6.54
Exercisable, Outstanding | shares 399,029
Exercisable, Weighted Average Exercise Price $ 5.39
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 7,500
Outstanding, Weighted Average Remaining Contractual Life (Years) 1 year 1 month 20 days
Outstanding, Weighted Average Exercise Price $ 1.95
Exercisable, Outstanding | shares 7,500
Exercisable, Weighted Average Exercise Price $ 1.95
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 15,000
Outstanding, Weighted Average Remaining Contractual Life (Years) 1 year 1 month 17 days
Outstanding, Weighted Average Exercise Price $ 2.22
Exercisable, Outstanding | shares 15,000
Exercisable, Weighted Average Exercise Price $ 2.22
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 179,729
Outstanding, Weighted Average Remaining Contractual Life (Years) 3 years 9 months 7 days
Outstanding, Weighted Average Exercise Price $ 3.14
Exercisable, Outstanding | shares 179,729
Exercisable, Weighted Average Exercise Price $ 3.14
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 3,833
Outstanding, Weighted Average Remaining Contractual Life (Years) 4 years 1 month 2 days
Outstanding, Weighted Average Exercise Price $ 6.52
Exercisable, Outstanding | shares 3,833
Exercisable, Weighted Average Exercise Price $ 6.52
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 199,781
Outstanding, Weighted Average Remaining Contractual Life (Years) 5 years 5 months 15 days
Outstanding, Weighted Average Exercise Price $ 7.64
Exercisable, Outstanding | shares 178,445
Exercisable, Weighted Average Exercise Price $ 7.59
Range 6 [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Range of Exercise Prices Minimum 9.01
Range of Exercise Prices Maximum $ 10.00
Outstanding, Outstanding | shares 29,000
Outstanding, Weighted Average Remaining Contractual Life (Years) 5 years 9 months 3 days
Outstanding, Weighted Average Exercise Price $ 9.37
Exercisable, Outstanding | shares 7,450
Exercisable, Weighted Average Exercise Price $ 9.37
Range 7 [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Range of Exercise Prices Minimum 12.01
Range of Exercise Prices Maximum $ 13.00
Outstanding, Outstanding | shares 16,653
Outstanding, Weighted Average Remaining Contractual Life (Years) 8 years 2 months 23 days
Outstanding, Weighted Average Exercise Price $ 12.54
Exercisable, Outstanding | shares 7,072
Exercisable, Weighted Average Exercise Price $ 12.63
Range 8 [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Range of Exercise Prices Minimum 13.01
Range of Exercise Prices Maximum $ 14.00
Outstanding, Outstanding | shares 44,447
Outstanding, Weighted Average Remaining Contractual Life (Years) 2 years 6 months 25 days
Outstanding, Weighted Average Exercise Price $ 13.50
Exercisable, Outstanding | shares 0
Exercisable, Weighted Average Exercise Price $ 0.00