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Condensed Consolidated Statements of Operations (Unaudited) - Scenario, Unspecified [Domain] - USD ($)
 3 Months Ended 9 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Revenues:        
Product sales $ 3,256,564 $ 7,621,392 $ 11,655,451 $ 16,291,114
Contract and other 249,351 382,696 722,122 922,910
Total revenues 3,505,915 8,004,088 12,377,573 17,214,024
Cost of revenues 1,804,905 2,955,292 6,020,601 7,491,421
Gross profit 1,701,010 5,048,796 6,356,972 9,722,603
Operating expenses:        
Selling, general and administrative 1,286,095 2,488,284 4,154,314 5,543,793
Research and development 519,991 622,273 1,567,113 1,591,665
Total operating expenses 1,806,086 3,110,557 5,721,427 7,135,458
(Loss) income from operations (105,076) 1,938,239 635,545 2,587,145
Other income 31,863 5,128 88,987 15,411
(Loss) income from operations before income taxes (73,213) 1,943,367 724,532 2,602,556
Income tax (benefit) expense (9,266) 552 (7,666) 2,252
Net (loss) income $ (63,947) $ 1,942,815 $ 732,198 $ 2,600,304
Net (loss) income per common share - basic and diluted (in dollars per share) $ 0 $ 0.06 $ 0.02 $ 0.08
Weighted average common shares outstanding:        
Basic (in shares) 33,152,714 33,041,142 33,214,242 33,067,515
Diluted (in shares) 33,152,714 33,185,564 33,738,616 33,342,311