v3.26.3
Note 9 - Deferred Revenue (Details Textual) - USD ($)
3 Months Ended
Aug. 31, 2026
Aug. 31, 2025
May 31, 2026
Revenue from Contract with Customer, Excluding Assessed Tax $ 5,321,088 $ 10,732,573  
Pallets [Member]      
Revenue from Contract with Customer, Excluding Assessed Tax 0 $ 0  
Deferred Revenue, Current $ 22,964   $ 22,964