Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies - Additional Information (Detail)

v2.4.0.8
Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)
9 Months Ended
Sep. 30, 2013
Accounting Policies [Line Items]  
Deferred financing costs $ 48,000
Minimum [Member]
 
Accounting Policies [Line Items]  
Percentage of tax benefit likely of being realized 50.00%
Innmune Limited [Member]
 
Accounting Policies [Line Items]  
Ownership percentage by parent 100.00%