Quarterly report pursuant to Section 13 or 15(d)

Note 20 - Commitments and Contingencies (Details Textual)

v3.23.2
Note 20 - Commitments and Contingencies (Details Textual) - USD ($)
$ in Thousands, shares in Trillions
 3 Months Ended 4 Months Ended 6 Months Ended 12 Months Ended 17 Months Ended
May 31, 2023
May 31, 2022
Mar. 31, 2023
May 31, 2023
May 31, 2022
Nov. 30, 2022
May 31, 2022
Jan. 07, 2022
Apr. 13, 2018
Restricted Stock Units (RSUs) [Member]                  
Share-Based Payment Arrangement, Expense       $ 2,000 $ 1,300        
Restricted Stock Units (RSUs) [Member] | Chief Technology Officer [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in shares)               0.2  
Share-Based Payment Arrangement, Expense $ 200 $ 0 $ 400   0        
CO2 Pistols [Member]                  
Initial Royalty, Percentage of Net Price           2.50%      
Net Price Per Unit           167.60      
Reduction in Royalty, Percentage Per Year           0.10%      
Minimum Royalty Percentage           1.00%      
Initial Royalty Percentage for New Products in Category           2.50%      
Fintail Projectiles [Member]                  
Initial Royalty, Percentage of Net Price           4.00%      
Andre Buys [Member]                  
Other Commitment, to be Paid, Year One                 $ 30
Andre Buys [Member] | Chief Technology Officer [Member] | Related Party [Member]                  
Royalty Expense $ 10 $ 0   $ 10 $ 0   $ 0