Annual report pursuant to Section 13 and 15(d)

3. Summary of Significant Accounting Policies (Details Narrative)

v3.19.2
3. Summary of Significant Accounting Policies (Details Narrative) - USD ($)
12 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Allowance for doubtful accounts $ 24,000 $ 17,000
Allowance for sales discounts, rebates, distributor fees and returns 443,000 1,275,000
Inventory reserves 184,000 111,000
Transfers in or out of Level 3 0 0
Asset impairment charges 0 0
Research and development expenses 1,518,000 1,575,000
Advertising costs 157,000 177,000
Revenues 18,970,000 16,658,000
Foreign currency translation adjustment 374,000 203,000
Foreign currency transaction loss 162,000 208,000
Accumulated other comprehensive loss (4,349,000) (3,975,000)
Shipping and Handling [Member]    
Revenues $ 55,000 $ 46,000
Revenues [Member] | One Customer [Member]    
Significant customer concentration 10.00% 19.00%
Revenues [Member] | One Customer [Member]    
Significant customer concentration 18.00% 22.00%
Revenues [Member] | One Customer [Member]    
Significant customer concentration   13.00%
Revenues [Member] | One Customer [Member]    
Significant customer concentration   12.00%
Accounts Receivable [Member] | One Customer [Member]    
Significant customer concentration   36.00%
Accounts Receivable [Member] | One Customer [Member]    
Significant customer concentration   18.00%