Short Term Loans - Additional Information (Detail) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Short-term Debt [Line Items]
Loan payable to CITIC Bank Corporation Limited, term			1 year
Loan payable to CITIC Bank Corporation Limited, number of working capital Loan Contracts			2
Loan payable to CITIC Bank Corporation Limited, maturity date			Nov. 29, 2012
Debt renewed interest rate during period			6.60%
Interest expense	$ 1,361,674	$ 113,298	$ 3,112,596	$ 336,212
Bank Loans
Short-term Debt [Line Items]
Interest expense	$ 96,866	$ 113,298	$ 287,330	$ 336,212