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Patent Intangible Assets (Detail) (USD $)
3 Months Ended
Mar. 31, 2015
Dec. 31, 2014
Weighted Average Useful Life 5 years  
Gross Carrying Amount $ 12,109,118us-gaap_FiniteLivedIntangibleAssetsGross  
Accumulated Amortization (2,081,299)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization  
Net Carrying Amount 10,027,819us-gaap_FiniteLivedIntangibleAssetsNet 10,415,404us-gaap_FiniteLivedIntangibleAssetsNet
Patents [Member]    
Weighted Average Useful Life 8 years  
Gross Carrying Amount 12,109,118us-gaap_FiniteLivedIntangibleAssetsGross
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_PatentsMember
 
Accumulated Amortization (2,081,299)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_PatentsMember
 
Net Carrying Amount $ 10,027,819us-gaap_FiniteLivedIntangibleAssetsNet
/ us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis
= us-gaap_PatentsMember