Quarterly report pursuant to Section 13 or 15(d)

Discontinued Operations (Details)

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Discontinued Operations (Details) (USD $)
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Sep. 30, 2011
Dec. 31, 2011
Discontinued Operations [Abstract]          
Proceeds from sales of discontinued operations         $ 30,300,000
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]          
Net sales   255,632 71,931 597,729  
Research and development 6,127,546 3,858,141 12,547,373 8,159,992  
Selling, general and administrative 2,941,851 2,870,603 8,487,318 7,499,454  
Total operating expenses 9,069,397 6,728,744 21,034,691 15,659,446  
Other expense, net (2,619) (709) (59,088) (1,807)  
Income taxes    6,403,928    6,403,928  
(Loss) income from discontinued operations    (220,682)    3,328,009  
GDS Business and Cardiosonix Subsidiary [Member]
         
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]          
Net sales   1,785,540   7,522,474  
Cost of goods sold   560,909   2,323,858  
Gross profit   1,224,631   5,198,616  
Research and development   293,990   572,209  
Selling, general and administrative   149,799   296,652  
Total operating expenses   443,789   868,861  
Other expense, net   (363)   (585)  
Income taxes   (1,001,161)   (1,001,161)  
(Loss) income from discontinued operations   $ (220,682)   $ 3,328,009