Plant and Equipment - Additional Information (Detail) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Property, Plant and Equipment, Net [Abstract]
Depreciation of property and equipment	$ 17,394	$ 17,313	$ 52,021	$ 51,940