Annual report pursuant to Section 13 and 15(d)

15. Income Taxes (Details Narrative)

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15. Income Taxes (Details Narrative) - USD ($)
 12 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Foreign tax credit carryforward $ 50,000  
Additional Paid-in Capital [Member]    
Cumulative effect adjustment for excess tax benefit   $ 11,000
Federal [Member]    
Net operating loss carryforwards $ 107,000,000  
Operating loss beginning expiration dates Dec. 31, 2024  
Research credit carryforwards $ 1,000,000  
Research credit expiration date Dec. 31, 2024  
California [Member]    
Net operating loss carryforwards $ 40,500,000  
Operating loss beginning expiration dates Dec. 31, 2029  
Research credit carryforwards $ 790,000  
Foreign [Member]    
Net operating loss carryforwards $ 3,200,000  
Operating loss beginning expiration dates Mar. 31, 2028  
Foreign tax credit carryforward $ 50,000  
Foreign tax credit expiration date Mar. 31, 2023