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Consolidated Statements of Comprehensive Income (unaudited) - USD ($)
 3 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Consolidated Statements Of Comprehensive Income    
Sales, net $ 5,000,229 $ 4,190,330
Cost of sales 2,166,481 1,938,762
Gross margin 2,833,748 2,251,568
Operating expenses:    
Selling, general and administrative 2,162,822 1,438,592
New product development 278,018 148,346
Total costs and expenses 2,440,840 1,586,938
Operating income 392,908 664,630
Other income (expense)    
Interest expense (6,941) (12,871)
Change in fair value of warrant liability 43,500 368,114
Other income (expense) (21,531) (174,844)
Total other income (expense), net 15,028 180,399
Net income before income taxes 407,936 845,029
Income taxes 267,440 2,056
Net income $ 140,496 $ 842,973
Income per common share - basic $ .01 $ .06
Number of shares used in per share calculation- basic 15,616,855 15,239,366
Income per common share - diluted $ .01 $ .05
Number of shares used in per share calculation- diluted 17,152,771 16,542,934
Foreign currency translation adjustment $ 31,553 $ 12,075
Comprehensive income $ 172,049 $ 855,048