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Consolidated Balance Sheets (Parenthetical) - USD ($)
Dec. 31, 2016
Mar. 31, 2016
Consolidated Balance Sheets [Abstract]    
Accumulated amortization of patent costs $ 932,564 $ 916,960
Accumulated amortization of trademark costs $ 80,885 $ 77,514
Common stock, par value $ 0.01 $ 0.01
Common stock, shares authorized 75,000,000 75,000,000
Common stock, shares issued 48,519,313 48,330,286
Common Stock, shares outstanding 48,519,313 48,330,286