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Related Party Transactions - Additional Information (Detail) (USD $)
3 Months Ended 6 Months Ended
Jun. 30, 2013
Dec. 31, 2012
Jun. 30, 2012
Beneficial Owner [Member]
Jun. 30, 2012
Beneficial Owner [Member]
Related Party Transaction [Line Items]        
Amounts due from related parties $ 841,573 $ 2,194,491    
Amounts due to Actavis 0 0    
Reimbursement Revenue     $ 3,100 $ 400,000