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STATEMENTS OF OPERATIONS (USD $)
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
STATEMENTS OF OPERATIONS      
Sales, net $ 33,644,503 $ 32,102,296 $ 36,219,562
Cost of Sales      
Costs of manufactured product 19,776,198 18,556,257 20,757,488
Royalty expense to shareholders 2,691,887 2,643,209 2,940,948
Total cost of sales 22,468,085 21,199,466 23,698,436
Gross profit 11,176,418 10,902,830 12,521,126
Operating expenses:      
Sales and marketing 4,220,809 3,439,535 3,674,168
Research and development 871,851 815,018 885,445
General and administrative 10,022,621 10,738,110 14,260,151
Impairment of assets     365,295
Total operating expenses 15,115,281 14,992,663 19,185,059
Loss from operations (3,938,863) (4,089,833) (6,663,933)
Interest and other income 46,999 62,596 32,324
Interest expense, net (231,210) (240,484) (302,843)
Litigation settlements, net   5,700,000 9,159,089
Income (loss) before income taxes (4,123,074) 1,432,279 2,224,637
Provision (benefit) for income taxes 9,818 13,797 (176,057)
Net income (loss) (4,132,892) 1,418,482 2,400,694
Preferred Stock dividend requirements (918,108) (964,047) (1,370,620)
Earnings (loss) applicable to common shareholders $ (5,051,000) $ 454,435 $ 1,030,074
Basic earnings (loss) per share (in dollars per share) $ (0.19) $ 0.02 $ 0.04
Diluted earnings (loss) per share (in dollars per share) $ (0.19) $ 0.02 $ 0.04
Weighted average common shares outstanding:      
Basic (in shares) 26,219,728 24,171,238 23,872,783
Diluted (in shares) 26,219,728 26,354,786 26,248,874