General form of registration statement for all companies including face-amount certificate companies

3. Summary of Significant Accounting Policies (Details Narrative)

v3.10.0.1
3. Summary of Significant Accounting Policies (Details Narrative) - USD ($)
3 Months Ended 6 Months Ended 12 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Mar. 31, 2018
Mar. 31, 2017
Allowance for doubtful accounts $ 26,000   $ 26,000   $ 17,000 $ 14,000
Allowance for sales discounts, rebates, distributor fees and returns         1,275,000 672,000
Inventory reserves 128,000   128,000   111,000 61,000
Transfers in or out of Level 3         0 0
Asset impairment charges         0 0
Research and development expenses         1,575,000 1,576,000
Advertising costs         177,000 149,000
Revenues 4,939,000 $ 4,325,000 9,308,000 $ 8,160,000 16,658,000 12,825,000
Foreign currency translation adjustment         203,000 (324,000)
Foreign currency transaction loss         208,000 208,000
Foreign currency transaction gain         107,000 36,000
Accumulated other comprehensive loss $ (4,127,000)   $ (4,127,000)   (3,975,000) (4,178,000)
Shipping and Handling [Member]            
Revenues         $ 46,000 $ 49,000
Accounts Receivable [Member] | One Customer [Member]            
Significant customer concentration         36.00% 26.00%
Accounts Receivable [Member] | One Customer [Member]            
Significant customer concentration         18.00% 12.00%
Accounts Receivable [Member] | CustomerCMember            
Significant customer concentration           10.00%
Revenues [Member] | One Customer [Member]            
Significant customer concentration         22.00% 12.00%
Revenues [Member] | One Customer [Member]            
Significant customer concentration         19.00% 10.00%
Revenues [Member] | One Customer [Member]            
Significant customer concentration         13.00% 10.00%
Revenues [Member] | One Customer [Member]            
Significant customer concentration         12.00%