Statutory Reserves - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Statutory Reserves Disclosure [Line Items]
Statutory reserve	$ 2,227,634	$ 2,227,634
Appropriation To Statutory Reserve Description	Appropriation to the statutory reserve should be at least 10% of the after-tax net income until the reserve is equal to 50% of the registered capital.
Subsidiary of Common Parent
Statutory Reserves Disclosure [Line Items]
Statutory reserve	$ 0	$ 1,035