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Related Parties - Additional Information (Detail) - USD ($)
9 Months Ended 12 Months Ended
Sep. 30, 2016
Dec. 31, 2015
L.S.A. Life Sciences Accelerator Limited [Member]    
Related Party Transaction [Line Items]    
Ownership percentage 20.74% 24.30%
MEDX Ventures Group LLC [Member]    
Related Party Transaction [Line Items]    
Ownership percentage 14.94% 12.16%
Manage consulting service $ 17,000 $ 17,000
The Technician Research And Development Foundation Limited [Member]    
Related Party Transaction [Line Items]    
Ownership percentage 13.90% 15.88%