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CONDENSED STATEMENTS OF OPERATIONS (USD $)
 3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
CONDENSED STATEMENTS OF OPERATIONS    
Sales, net $ 6,040,378 $ 7,173,112
Cost of sales    
Cost of manufactured product 3,820,784 3,840,094
Royalty expense to shareholders 496,242 556,965
Total cost of sales 4,317,026 4,397,059
Gross profit 1,723,352 2,776,053
Operating expenses:    
Sales and marketing 1,096,694 1,063,287
Research and development 184,724 180,848
General and administrative 2,431,678 2,898,952
Total operating expenses 3,713,096 4,143,087
Loss from operations (1,989,744) (1,367,034)
Interest and other income 10,396 11,440
Interest expense, net (57,168) (52,063)
Loss before income taxes (2,036,516) (1,407,657)
Provision for income taxes 1,876 1,876
Net loss (2,038,392) (1,409,533)
Preferred stock dividend requirements (228,999) (229,068)
Loss applicable to common shareholders $ (2,267,391) $ (1,638,601)
Basic loss per share (in dollars per share) $ (0.08) $ (0.06)
Diluted loss per share (in dollars per share) $ (0.08) $ (0.06)
Weighted average common shares outstanding:    
Basic (in shares) 27,258,689 27,238,495
Diluted (in shares) 27,258,689 27,238,495