Accounts Payable - Additional Information (Detail) - USD ($)	Sep. 30, 2015	Dec. 31, 2014
Accounts Payable [Line Items]
Accounts payable	$ 127,120	$ 41,026
Accounts Payable, Related Parties, Current	$ 0	100,450
Clinical Trials
Accounts Payable [Line Items]
Accounts Payable, Related Parties, Current		$ 100,450