v3.26.1
Note 5 - Concentrations (Details Textual)
3 Months Ended 12 Months Ended
Jun. 30, 2026
USD ($)
Jun. 30, 2025
USD ($)
Mar. 31, 2026
Revenue from Contract with Customer, Including Assessed Tax $ 866,255 $ 973,675  
Revenue Benchmark [Member] | Customer Concentration Risk [Member]      
Concentration Risk, Number of Customers 2 1  
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Two Customers [Member]      
Concentration Risk, Percentage 44.00%    
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | One Customer [Member]      
Concentration Risk, Percentage   41.00%  
Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Foreign Customers [Member]      
Concentration Risk, Percentage 12.40% 14.00%  
Revenue from Contract with Customer, Including Assessed Tax $ 107,131 $ 136,415  
Accounts Receivable [Member] | Customer Concentration Risk [Member]      
Concentration Risk, Number of Customers 2 2 2
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Two Customers [Member]      
Concentration Risk, Percentage 49.00% 50.00% 51.00%
Accounts Payable Balance [Member] | Supplier Concentration Risk [Member]      
Number of Vendors 2 1  
Accounts Payable Balance [Member] | Supplier Concentration Risk [Member] | Two Vendors [Member]      
Concentration Risk, Percentage 28.00%    
Accounts Payable Balance [Member] | Supplier Concentration Risk [Member] | One Vendor [Member]      
Concentration Risk, Percentage   32.00%