Post-effective amendment to a registration statement that is not immediately effective upon filing

17. Segment and Geographic Information (Details)

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17. Segment and Geographic Information (Details) - USD ($)
12 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Sales revenue from geographical territories $ 9,939,000 $ 7,210,000
Product license fees and royalties 3,056,000 5,513,000
Total company revenues 12,995,000 12,723,000
Sales Revenue, Segment [Member] | UNITED STATES    
Sales revenue from geographical territories 1,978,000 1,406,000
Sales Revenue, Segment [Member] | MEXICO    
Sales revenue from geographical territories 5,053,000 3,758,000
Sales Revenue, Segment [Member] | Europe and Other    
Sales revenue from geographical territories $ 2,908,000 $ 2,046,000