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CONDENSED STATEMENTS OF OPERATIONS (USD $)
 3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
CONDENSED STATEMENTS OF OPERATIONS        
Sales, net $ 10,886,680 $ 9,160,278 $ 23,803,420 $ 23,240,623
Cost of sales        
Cost of manufactured product 6,191,232 5,094,432 14,109,159 13,534,753
Royalty expense to shareholders 843,730 748,044 1,941,267 1,872,553
Total cost of sales 7,034,962 5,842,476 16,050,426 15,407,306
Gross profit 3,851,718 3,317,802 7,752,994 7,833,317
Operating expenses:        
Sales and marketing 919,842 1,092,505 3,079,361 3,235,528
Research and development 129,189 267,991 506,150 648,224
General and administrative 2,381,799 2,782,623 7,076,688 8,527,295
Total operating expenses 3,430,830 4,143,119 10,662,199 12,411,047
Income (loss) from operations 420,888 (825,317) (2,909,205) (4,577,730)
Interest and other income 7,598 6,551 26,430 27,149
Interest expense, net (55,185) (59,533) (168,388) (172,236)
Loss before income taxes 373,301 (878,299) (3,051,163) (4,722,817)
Provision for income taxes 1,876 62,085 5,627 65,836
Net loss 371,425 (940,384) (3,056,790) (4,788,653)
Preferred stock dividend requirements (228,999) (228,999) (686,997) (687,066)
Income (loss) applicable to common shareholders $ 142,426 $ (1,169,383) $ (3,743,787) $ (5,475,719)
Basic earnings (loss) per share (in dollars per share) $ 0.01 $ (0.04) $ (0.14) $ (0.20)
Diluted earnings (loss) per share (in dollars per share) $ 0.00 $ (0.04) $ (0.14) $ (0.20)
Weighted average common shares outstanding:        
Basic (in shares) 27,394,061 26,719,608 27,326,966 27,000,158
Diluted (in shares) 29,173,359 26,719,608 27,326,966 27,000,158