v3.25.2
Note 2 - Significant Accounting Policies (Details Textual) - USD ($)
12 Months Ended
Sep. 07, 2021
Mar. 31, 2025
Mar. 31, 2024
Mar. 31, 2022
Mar. 31, 2023
Cash, Uninsured Amount   $ 133,000      
Accounts Receivable, Allowance for Credit Loss   975,597     $ 814,788
Contract With Customer, Liability, Revenue Recognized During Period   137,000 $ 237,000    
Advertising Expense   10,609 22,932    
Shipping and Handling Costs   $ 9,400 $ 0    
Earnings Per Share, Basic   $ (0) $ (0.01)    
Notes Payable, Current   $ 896 $ 6,276    
Retained Earnings (Accumulated Deficit)   (32,970,220) (32,945,047)    
Cash Provided by (Used in) Operating Activity, Including Discontinued Operation   9,978 (709,889)    
Paycheck Protection Program CARES Act [Member]          
Gain (Loss) on Extinguishment of Debt $ 361,275     $ 693,817  
Notes Payable, Current   $ 896 $ 6,276    
Domestic Tax Jurisdiction [Member]          
Open Tax Year   2021 2022 2023 2024      
State and Local Jurisdiction [Member] | New Jersey Division of Taxation [Member]          
Open Tax Year   2020 2021 2022 2023 2024      
Minimum [Member]          
Property, Plant and Equipment, Useful Life   5 years      
Maximum [Member]          
Property, Plant and Equipment, Useful Life   7 years