Quarterly report pursuant to Section 13 or 15(d)

Note 15 - Stock-based Compensation (Details Textual)

v3.23.1
Note 15 - Stock-based Compensation (Details Textual) - USD ($)
$ in Thousands
 3 Months Ended
Jun. 17, 2022
Feb. 28, 2023
Feb. 28, 2022
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   $ 200 $ 600    
Share-Based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount   4,400      
Restricted Stock Units (RSUs) [Member]          
Share-Based Payment Arrangement, Expense   $ 1,000 $ 700    
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Granted (in shares)   0 0    
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Exercised (in shares)   13,636      
Stock Issued During Period, Shares, Restricted Stock Award, Gross (in shares)   13,636      
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Forfeitures (in shares)   37,708      
Share-Based Payment Arrangement, Reversal of Expense   $ 10      
Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount   $ 3,200      
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)   1 year 7 months 6 days      
Restricted Stock Units (RSUs) [Member] | Former Employee [Member]          
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Forfeitures (in shares)   37,708      
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 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        
Share-Based Payment Arrangement, Expense   $ 1,500 $ 800    
The 2020 Equity Incentive Plan (2020 Plan) [Member] | Share-Based Payment Arrangement, Option [Member] | Employees and Directors [Member]          
Share-Based Payment Arrangement, Expense   $ 500 $ 100    
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Net of Forfeitures, Total (in shares)   249,999 0