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Agreement with Procaps S.a. and Research Grants - Additional Information (Detail) (USD $)
12 Months Ended 162 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2013
Collaborative Arrangements and Non-collaborative Arrangement Transactions [Line Items]        
Deferred revenue   $ 200,000    
Federal grants award 200,000   489,000 691,000
Federal grant received   $ 234,000 $ 255,000