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10. Segment and Geographic Information (Tables)
9 Months Ended
Dec. 31, 2019
Segment Reporting [Abstract]  
Segment and Geographic Information
  

Three Months Ended

December 31,

  

Nine Months Ended

December 31,

 
   2019   2018   2019   2018 
United States  $2,059,000   $2,977,000   $6,753,000   $7,374,000 
Latin America   988,000    929,000    2,577,000    3,005,000 
Europe and Rest of the World   1,334,000    1,139,000    4,148,000    3,396,000 
Total  $4,381,000   $5,045,000   $13,478,000   $13,775,000