Other Payables and Accruals (Detail) (USD $)	Sep. 30, 2012	Dec. 31, 2011
Accounts Payable and Accrued Liabilities [Line Items]
Accrued staff costs	$ 570,044	$ 667,969
Other taxes payable		1,450,360
Construction cost payable	1,950,747	3,598,053
Advance from an unrelated party	500,000
Other payables	674,486	654,451
Other payables and accruals	$ 4,917,883	$ 6,370,833