Annual report pursuant to Section 13 and 15(d)

Note 14 - Stock-based Compensation (Details Textual)

v3.22.4
Note 14 - Stock-based Compensation (Details Textual) - USD ($)
$ in Millions
 3 Months Ended 12 Months Ended
Jun. 17, 2022
Mar. 23, 2022
Jan. 17, 2022
Feb. 28, 2022
Aug. 31, 2021
Nov. 30, 2022
Nov. 30, 2021
Jun. 16, 2022
Nov. 19, 2020
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares) 50,000,000             300,000,000  
Share-Based Payment Arrangement, Expense           $ 5.4 $ 3.2    
Percentage of RSUs Exchanged for Stock Options   50.00%              
Number of RSUs Exchanged for Stock Options (in shares)   778,750       3,874 8,392    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period (in shares)           26,000 100,002    
Share-Based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount           $ 3.2      
Restricted Stock Units (RSUs) [Member]                  
Share-Based Payment Arrangement, Expense           $ 2.6 $ 2.9    
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Granted (in shares)           536,805 174,493    
Share-Based Payment Arrangement, Plan Modification, Reclassified from Paid in Capital to Liability     $ 1.0            
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period (in shares)           25,000 91,373    
Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount           $ 4.4      
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)           2 years 1 month 6 days      
Restricted Stock Units (RSUs) [Member] | CTO [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Granted (in shares)       200,000          
Restricted Stock Units (RSUs) [Member] | Former Employee [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period (in shares)           25,000      
Modified Rewards [Member]                  
Share-Based Payment Arrangement, Expense         $ 1.4        
Share-Based Payment Arrangement, Option [Member]                  
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)           2 years 3 months 18 days      
The 2017 Stock Option Plan (2017 Plan) [Member]                  
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares)             1,899,327    
The 2020 Equity Incentive Plan (2020 Plan) [Member]                  
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares) 3,800,000               2,500,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Additional Shares Authorized (in shares) 1,300,000                
The 2020 Equity Incentive Plan (2020 Plan) [Member] | Board of Directors Chairman [Member]                  
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Net of Forfeitures, Total (in shares)           994,750 62,000    
The 2020 Equity Incentive Plan (2020 Plan) [Member] | Share-Based Payment Arrangement, Option [Member] | Employees and Directors [Member]                  
Share-Based Payment Arrangement, Expense           $ 2.8 $ 0.3