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Equity Compensation Plans - Additional Information (Detail) - USD ($)
3 Months Ended 6 Months Ended 12 Months Ended
Nov. 30, 2021
Nov. 30, 2020
Nov. 30, 2022
Nov. 30, 2021
Nov. 30, 2020
May 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Weighted-average fair value per share of stock options granted       $ 7.71    
Compensation expense related to share based awards $ 1,748,000 $ 1,511,000   $ 3,438,000 $ 3,192,000  
Subsequent Event [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Weighted-average fair value per share of stock options granted     $ 9.54      
2018 Omnibus Incentive Plan | Restricted Stock Units (RSUs)            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition           4 years 3 months 25 days
Share-based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount $ 6,501,000     $ 6,501,000    
Employee Stock Purchase Plan | 2011 Employee Stock Purchase Plan            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Annual maximum limit percentage of compensation to purchase shares 5.00%          
Employee stock purchase plan stock price percentage 10.00%          
Minimum            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Stock option vesting period       3 years    
Stock option contractual terms       5 years    
Minimum | 2018 Omnibus Incentive Plan | Restricted Stock Units (RSUs)            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Stock option vesting period       3 years    
Maximum            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Stock option vesting period       5 years    
Stock option contractual terms       10 years    
Maximum | 2018 Omnibus Incentive Plan | Restricted Stock Units (RSUs)            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Stock option vesting period       5 years