Annual report pursuant to Section 13 and 15(d)

15. Income Taxes (Tables)

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15. Income Taxes (Tables)
12 Months Ended
Mar. 31, 2019
Income Tax Disclosure [Abstract]  
Schedule of deferred tax assets
    March 31,  
    2019     2018  
Deferred tax assets:                
Net operating loss carryforwards   $ 28,118,000     $ 25,487,000  
Research and development tax credit carryforwards     1,850,000       1,789,000  
Stock-based compensation     3,795,000       3,697,000  
Allowances and accruals     1,142,000       1,118,000  
Other deferred tax assets     252,000       284,000  
State income taxes     1,000       1,000  
Basis difference in assets     14,000       (3,000 )
Total deferred tax assets   $ 35,172,000     $ 32,373,000  
                 
Deferred tax assets     35,172,000       32,373,000  
Valuation allowance     (35,172,000 )     (32,373,000 )
Deferred tax assets   $     $  
Income tax provision domestic and foreign
      Year Ended March 31,  
      2019     2018  
  Domestic     $ 10,088,000     $ 12,607,000  
  Foreign       1,252,000       1,671,000  
        $ 11,340,000     $ 14,278,000  
Schedule of income tax expense
      Year Ended March 31,  
      2019     2018  
Current:              
State     $ 2,000     $ 37,000  
Foreign       456,000       13,000  
        458,000       50,000  
Deferred:                  
Federal              
State              
Foreign              
      $ 458,000     $ 50,000  
Reconciliation of federal income tax rate to effective rate
    Year Ended March 31,  
    2019     2018  
Expected federal statutory rate     21.0%       30.8%  
State income taxes, net of federal benefit     4.5%       0.5%  
Research and development credit     0.6%       0.3%  
Foreign earnings taxed at different rates     1.3%       (0.3% )
Effect of state net operating loss expiration     (3.0% )     (0.9% )
Effect of permanent differences     (4.3% )     (4.2% )
Effect of other foreign permanent differences     (4.0% )      
True-up of state deferred assets     1.5%       7.7%  
Tax cuts and Jobs Act impact           (103.7% )
      17.6%       (69.8% )
Change in valuation allowance     21.6%       68.5%  
Totals     (4.0% )     (1.3% )