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10. Segment and Geographic Information (Tables)
6 Months Ended
Sep. 30, 2014
Segment Reporting [Abstract]  
Segment and Geographic Information
   Three Months   Six Months 
   Ended   Ended 
   September 30,   September 30, 
   2014   2013   2014   2013 
U.S.  $978,000   $1,898,000   $2,006,000   $3,221,000 
Mexico   1,541,000    1,352,000    3,011,000    2,776,000 
Europe and Rest of World   554,000    603,000    1,226,000    1,010,000 
   $3,073,000   $3,853,000   $6,243,000   $7,007,000