Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies (Details Narrative)

v3.22.2
Summary of Significant Accounting Policies (Details Narrative) - USD ($)
12 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Product Information [Line Items]    
Allowance for doubtful accounts $ 0 $ 125,000
Allowance for sales discounts, rebates, distributor fees and returns 81,000 1,488,000
Inventory reserves 218,000 223,000
Transfers in or out of Level 3 0 0
Asset impairment charges 0 0
Research and development expenses 125,000 555,000
Advertising costs 86,000 41,000
Revenues 12,628,000 18,629,000
Foreign currency translation adjustment 267,000 1,031,000
Foreign currency transaction loss 579,000 690,000
Accumulated other comprehensive loss 4,312,000 4,579,000
Shipping and Handling [Member]    
Product Information [Line Items]    
Revenues $ 52,000 $ 37,000
Accounts Receivable [Member] | First Customer [Member] | Customer Concentration Risk [Member]    
Product Information [Line Items]    
Significant customer concentration 20.00% 17.00%
Accounts Receivable [Member] | Second Customer [Member] | Customer Concentration Risk [Member]    
Product Information [Line Items]    
Significant customer concentration 15.00% 16.00%
Accounts Receivable [Member] | Third Customer [Member] | Customer Concentration Risk [Member]    
Product Information [Line Items]    
Significant customer concentration 14.00% 14.00%
Net Revenues [Member] | First Customer [Member] | Customer Concentration Risk [Member]    
Product Information [Line Items]    
Significant customer concentration 10.00% 32.00%
Net Revenues [Member] | Second Customer [Member] | Customer Concentration Risk [Member]    
Product Information [Line Items]    
Significant customer concentration 17.00% 15.00%
Net Revenues [Member] | Third Customer [Member] | Customer Concentration Risk [Member]    
Product Information [Line Items]    
Significant customer concentration 21.00%