Quarterly report pursuant to Section 13 or 15(d)

Note 16 - Stock-based Compensation (Details Textual)

v3.22.2
Note 16 - Stock-based Compensation (Details Textual) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 17, 2022
Mar. 23, 2022
May 31, 2022
Feb. 28, 2022
May 31, 2021
May 31, 2022
May 31, 2021
Jan. 07, 2022
Nov. 30, 2021
Nov. 19, 2020
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares)     300,000,000     300,000,000        
Share-Based Payment Arrangement, Expense     $ 800   $ 800 $ 1,600 $ 1,600      
Percentage of RSUs Exchanged for Stock Options   50.00%                
Number of RSUs Exchanged for Stock Options (in shares)   778,750                
Fair Value Adjustment of Obligation to Issue Stock Options           $ (300)        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period (in shares)           16,000        
Share-Based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount     300     $ 300        
Restricted Stock Units (RSUs) [Member]                    
Share-Based Payment Arrangement, Expense           $ 1,300 $ 1,600      
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Granted (in shares)           626 1,573,500      
Share-Based Payment Arrangement, Plan Modification, Incremental Cost     800     $ 800        
Share-Based Payment Arrangement, Plan Modification, Reclassified from Paid in Capital to Liability     1,000              
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Exercised (in shares)           3,874        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period (in shares)           25,000        
Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount     $ 3,100     $ 3,100        
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)           1 year 7 months 6 days        
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares)     122,500     122,500   200,000    
Restricted Stock Units (RSUs) [Member] | CTO [Member]                    
Share-Based Payment Arrangement, Expense     $ 500     $ 1,000        
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 Payment Arrangement, Plan Modification, Incremental Cost     400     400        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period (in shares)       25,000            
Restricted Stock Units (RSUs) [Member] | Former Director [Member]                    
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Exercised (in shares)       3,873            
Modified Rewards [Member]                    
Share-Based Payment Arrangement, Expense     $ 300     $ 300        
Share-Based Payment Arrangement, Option [Member]                    
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)           1 year 9 months 18 days        
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares)     994,750     994,750        
Subsequent Event [Member]                    
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares) 50,000,000                  
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)                   2,500,000
The 2020 Equity Incentive Plan (2020 Plan) [Member] | Employees and Directors [Member]                    
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Net of Forfeitures, Total (in shares)           0 29,000      
The 2020 Equity Incentive Plan (2020 Plan) [Member] | Share-Based Payment Arrangement, Option [Member] | Employees and Directors [Member]                    
Share-Based Payment Arrangement, Expense     $ 50   $ 90 $ 100 $ 200      
The 2020 Equity Incentive Plan (2020 Plan) [Member] | Subsequent Event [Member]                    
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares) 3,800,000                  
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Additional Shares Authorized (in shares) 1,300,000