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3. Summary of Significant Accounting Policies (Tables)
3 Months Ended
Jun. 30, 2019
Accounting Policies [Abstract]  
Computation of earnings per share
   Three Months Ended 
   June 30, 
   2019   2018 
Numerator:        
Net income (loss)  $715,000   $(3,458,000)
           
Denominator:          
Weighted-average number of common shares outstanding: basic   1,316,000    693,000 
Restricted stock units   3,000     
Conversion of Series C   17,000     
Weighted-average number of common shares outstanding: diluted   1,336,000    693,000 
           
Net income (loss) per share: basic  $0.54   $(4.99)
           
Net income (loss) per share: diluted  $0.54   $(4.99)
Schedule of antidilutive shares
   June 30, 
   2019   2018 
Common stock to be issued upon vesting of restricted stock units       4,000 
Common stock to be issued upon exercise of options   155,000    155,000 
Common stock to be issued upon exercise of warrants   446,000    153,000 
Common stock to be issued upon exercise of common stock units (1)   46,000     
    647,000    312,000 
Disaggregated Revenue by Source
   Three Months Ended June 30, 
Product  2019   2018 
Human Skin Care  $3,962,000   $3,554,000 
Animal Skin Care   423,000    541,000 
    4,385,000    4,095,000 
Service   326,000    274,000 
Total  $4,711,000   $4,369,000