Annual report [Section 13 and 15(d), not S-K Item 405]

Summary of Significant Accounting Policies (Details Narrative)

v3.25.2
Summary of Significant Accounting Policies (Details Narrative) - USD ($)
 12 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Mar. 31, 2023
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Inventory valuation reserves $ 298,000 $ 296,000  
Transfers in or out of level 3 0 0  
Impairment of long lived assets 0 0  
Research and development expenses 1,814,000 1,871,000  
Advertising costs 190,000 156,000  
Revenues 14,288,000 12,735,000  
Accumulated other comprehensive loss $ 4,376,000 $ 2,723,000  
Preferred stock, shares issued 0 0  
Other Comprehensive Income (Loss) [Member]      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Foreign currency translation adjustment loss $ 1,653,000    
Foreign currency translation adjustment gain   $ 695,000  
Other Operating Income (Expense) [Member]      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Foreign currency transaction gain 243,000    
Foreign currency transaction loss   825,000  
Probable Credit Losses [Member]      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Allowance for doubtful accounts 0 0 $ 0
Potential Discounts Returns Distributor Fees And Rebates [Member]      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Allowance for doubtful accounts 8,000 27,000 16,000
Shipping and Handling [Member]      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Revenues 18,000 28,000  
Invekra [Member]      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Deferred revenue $ 69,000 $ 152,000 $ 199,000