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Statements of Operations (USD $)
 3 Months Ended 6 Months Ended
Jun. 30, 2011
Jun. 30, 2010
Jun. 30, 2011
Jun. 30, 2010
Revenue:        
Product revenue, net $ 2,835,357 $ 3,244,343 $ 5,541,790 $ 5,174,945
Other revenue 87,851 85,447 167,104 165,027
Net revenue 2,923,208 3,329,790 5,708,894 5,339,972
Operating expense:        
Cost of revenue 1,943,429 2,128,711 3,805,088 3,655,808
Gross Profit 979,779 1,201,079 1,903,806 1,684,164
Research and development expense 459,996 360,812 861,021 790,075
Selling, general and administrative expense 1,049,892 972,225 2,127,589 2,184,642
Loss from operations (530,109) (131,958) (1,084,804) (1,290,553)
Interest income 1,444 2,129 3,338 16,264
Interest expense (900) (564) (1,798) (1,253)
Other, net   3,462 (43) 3,462
Loss before provision for income taxes (529,565) (126,931) (1,083,307) (1,272,080)
Provisions for income taxes        
Net loss $ (529,565) $ (126,931) $ (1,083,307) $ (1,272,080)
Net loss per share - basic and diluted $ (0.02) $ (0.01) $ (0.05) $ (0.06)
Weighted average number of basic and diluted common shares outstanding 21,204,162 21,204,162 21,204,162 21,204,162