v3.26.3
Note 10 - Revenue and Revenue Recognition - Disaggregation of Revenue (Details) - Customer Concentration Risk [Member]
3 Months Ended
Aug. 31, 2026
Aug. 31, 2025
Revenue from Contract with Customer Benchmark [Member] | End User Customers [Member]    
Percentage 21.00% 75.00%
Revenue, Product and Service Benchmark [Member] | Distributors [Member]    
Percentage 79.00% 25.00%