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Assets for Reportable Segments (Detail) (USD $)
Sep. 30, 2012
Dec. 31, 2011
Segment Reporting, Asset Reconciling Item [Line Items]    
Assets $ 22,112,615 $ 22,919,421
Property plant and equipment, and intangible assets 2,470,723 2,816,674
Technology Development
   
Segment Reporting, Asset Reconciling Item [Line Items]    
Assets 14,273,238 14,427,172
Property plant and equipment, and intangible assets 1,884,929 2,112,663
Products and Licensing
   
Segment Reporting, Asset Reconciling Item [Line Items]    
Assets 7,839,377 8,492,249
Property plant and equipment, and intangible assets $ 1,035,271 $ 1,243,574