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9. Segment and Geographic Information (Tables)
 3 Months Ended
Jun. 30, 2016
Segment Reporting [Abstract]  
Segment and Geographic Information
   Three Months Ended June 30, 
   2016   2015 
United States  $1,373,000   $787,000 
Latin America   1,098,000    1,558,000 
Europe and Rest of the World   1,038,000    571,000 
    3,509,000    2,916,000 
Product license fees and royalties   75,000    447,000 
Total  $3,584,000   $3,363,000 
License fees and royalties by partner
   Three Months Ended June 30, 
Product license fees and royalties  2016   2015 
Exeltis  $–   $54,000 
Innovacyn   –    20,000 
Laboratorios Sanfer, S.A. de C.V.   75,000    373,000 
Total product license fees and royalties  $75,000   $447,000