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Fair Value Measurements - Additional Information (Detail)
 3 Months Ended 9 Months Ended 12 Months Ended
Jun. 30, 2016
USD ($)
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Jun. 30, 2015
USD ($)
Jun. 30, 2016
USD ($)
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Jun. 30, 2015
USD ($)
Sep. 30, 2011
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Sep. 30, 2015
USD ($)
Jan. 31, 2013
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Dec. 31, 2012
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Jun. 30, 2010
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Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]                  
Short term investments | $ $ 1,030,556   $ 1,030,556     $ 17,539,902      
Fair value of investments | $ $ 1,003,840   $ 1,003,840            
Warrants outstanding 835,354   835,354            
Non-cash gain (loss) from change in fair value of the derivative liability | $ $ (110,859) $ (102,763) $ 230,082 $ 2,268,798          
Ablaris Therapeutics                  
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]                  
Warrants outstanding 500,000   500,000            
Non-cash gain (loss) from change in fair value of the derivative liability | $ $ (2,500) $ (1,950) $ 2,200 $ 177,605          
Duration of exchange rights     7 years            
Exchange right convertible conversion ratio     0.01            
Number of exchange right sold         675,000        
2010 Warrants                  
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]                  
Warrants issued to acquire Common Stock                 329,649
Warrants cancelled upon expiration 24,324   24,324            
2012 Warrants                  
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]                  
Warrants issued to acquire Common Stock               912,543  
Warrants outstanding 265,161   265,161            
2013 Warrants                  
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]                  
Warrants issued to acquire Common Stock             833,530    
Warrants outstanding 12,123   12,123