XML 88 R72.htm IDEA: XBRL DOCUMENT v3.23.4
Stock-Based Compensation - Narrative (Details)
$ / shares in Units, $ in Millions
3 Months Ended 12 Months Ended
Feb. 28, 2023
metric
Feb. 28, 2022
metric
Feb. 28, 2021
metric
Nov. 30, 2023
USD ($)
period
plan
$ / shares
shares
Nov. 30, 2022
$ / shares
shares
Nov. 30, 2021
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number of shareholder approved stock plans | plan       1    
Number of plans for which shareholder approval not required | plan       2    
Unrecognized stock-based compensation expense, net of expected forfeitures | $       $ 57.6    
Costs are expected to be recognized, weighted average period       2 years    
Stock Options            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Vesting period       1 year    
Weighted average estimated fair value of options granted, per share (in dollars per share) | $ / shares       $ 14.40 $ 10.95 $ 9.46
Restricted Stock Units (RSUs)            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Vesting period       3 years    
Number of common stock shares each restricted stock unit represents (in shares)       1    
Long-Term Incentive Plan            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number of performance metrics | metric 2 2 2      
Stock-based compensation service period 3 years 3 years 3 years      
Employee Stock Purchase Plan            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
ESPP number of purchase periods | period       9    
ESPP offering period       27 months    
Number of shares authorized (in shares)       10,250,000    
ESPP purchase period       3 months    
ESPP purchase price (as a percent)       85.00%    
Employee stock purchase plan, issued shares (in shares)       279,000 301,000 277,000
Weighted average purchase price of shares (in dollars per share) | $ / shares       $ 36.88 $ 30.59 $ 28.20
Shares available and reserved for issuance (in shares)       107,000    
Additional holding period       3 months    
Weighted average estimated fair value of options granted, per share (in dollars per share) | $ / shares       $ 13.56 $ 11.01 $ 11.59
2008 Stock Option and Incentive Plan            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Shares available for grant under stock plans (in shares)       2,985,048    
2002 Nonqualified Stock Plan            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Shares available for grant under stock plans (in shares)       93,064    
2004 Inducement Stock Plan            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Shares available for grant under stock plans (in shares)       466,716    
2021 Plan | Long-Term Incentive Plan            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Percentage of shares based on cumulative performance condition           75.00%
Cumulative performance condition         3 years  
Percentage of shares based on market conditions         25.00%  
Market condition period         3 years  
2022 Plan | Long-Term Incentive Plan            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Percentage of shares based on cumulative performance condition         75.00%  
Cumulative performance condition           3 years
Percentage of shares based on market conditions           25.00%
Market condition period           3 years
2023 Plan | Long-Term Incentive Plan            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Percentage of shares based on cumulative performance condition       75.00%    
Cumulative performance condition       3 years    
Percentage of shares based on market conditions       25.00%    
Market condition period       3 years