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Condensed Consolidated Statements Of Operations (USD $)
 3 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Revenues:    
Product sales $ 3,545,053 $ 2,137,990
Contract and other 66,582 67,399
Total revenues 3,611,635 2,205,389
Cost of revenues 1,863,041 1,213,013
Gross profit 1,748,594 992,376
Operating expenses:    
Selling, general and administrative 1,056,559 1,053,727
Research and development 381,318 379,220
Total operating expenses 1,437,877 1,432,947
Income (loss) from operations 310,717 (440,571)
Other income 12,944 3,684
Income (loss) from continuing operations before income taxes 323,661 (436,887)
Income tax expense 9,715  
Income (loss) from continuing operations 313,946 (436,887)
Income from discontinued operations, net of tax   81,520
Net income (loss) $ 313,946 $ (355,367)
Net income (loss) per common share - basic and diluted:    
Continuing operations $ 0.01 $ (0.01)
Discontinued operations      
Total net income (loss) per common share - basic and diluted $ 0.01 $ (0.01)
Weighted average common shares outstanding:    
Basic 32,374,499 30,633,109
Diluted 33,061,520 30,633,109