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CONDENSED STATEMENTS OF OPERATIONS - USD ($)
 3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
CONDENSED STATEMENTS OF OPERATIONS        
Sales, net $ 10,412,036 $ 8,840,134 $ 24,981,833 $ 22,337,169
Cost of sales        
Cost of manufactured product 6,304,397 4,900,072 15,116,805 12,400,679
Royalty expense to shareholder 847,301 680,287 2,070,699 1,868,064
Total cost of sales 7,151,698 5,580,359 17,187,504 14,268,743
Gross profit 3,260,338 3,259,775 7,794,329 8,068,426
Operating expenses:        
Sales and marketing 1,220,451 1,058,029 3,472,004 2,953,773
Research and development 159,921 117,939 465,765 389,712
General and administrative 1,912,824 2,165,246 6,346,731 6,306,085
Total operating expenses 3,293,196 3,341,214 10,284,500 9,649,570
Loss from operations (32,858) (81,439) (2,490,171) (1,581,144)
Interest and other income 19,477 8,609 44,155 19,822
Interest expense, net (52,962) (51,994) (159,053) (158,327)
Net loss before income taxes (66,343) (124,824) (2,605,069) (1,719,649)
Provision for income taxes 283 480 848 1,440
Net loss (66,626) (125,304) (2,605,917) (1,721,089)
Preferred stock dividend requirements (176,249) (176,249) (528,747) (528,747)
Loss applicable to common shareholders $ (242,875) $ (301,553) $ (3,134,664) $ (2,249,836)
Basic loss per share (in dollars per share) $ (0.01) $ (0.01) $ (0.10) $ (0.08)
Diluted loss per share (in dollars per share) $ (0.01) $ (0.01) $ (0.10) $ (0.08)
Weighted average common shares outstanding:        
Basic (in shares) 32,166,454 29,649,874 31,722,010 29,252,652
Diluted (in shares) 32,166,454 29,649,874 31,722,010 29,252,652