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STATEMENTS OF OPERATIONS (Unaudited) (USD $)
 3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Revenue:        
Product revenue, net $ 2,677,493 $ 2,702,682 $ 5,653,214 $ 5,032,975
Other revenue 5,618 80,111 9,250 159,156
Net revenue 2,683,111 2,782,793 5,662,464 5,192,131
Operating expense:        
Cost of revenue 1,834,086 1,932,368 3,907,184 3,778,019
Gross profit 849,025 850,425 1,755,280 1,414,112
Research and development expense 453,091 414,051 881,821 813,665
Selling, general and administrative expense 857,284 812,850 1,817,952 1,757,165
Loss from operations (461,350) (376,476) (944,493) (1,156,718)
Interest income 427   744  
Interest expense (1,771) (1,932) (9,125) (3,037)
Other, net 11,100 (26) 17,100 7,199
Loss before provision for income taxes (451,594) (378,434) (935,774) (1,152,556)
Provisions for income taxes            
Net loss $ (451,594) $ (378,434) $ (935,774) $ (1,152,556)
Net loss per share - basic and diluted $ (0.02) $ (0.02) $ (0.03) $ (0.05)
Weighted average number of basic and diluted common shares outstanding 28,468,162 21,208,162 28,467,444 21,208,162