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Tax Expense Benefit (Detail) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Income Taxes [Line Items]
Current Tax	$ 9,455,994	$ 9,436,752
Deferred Tax	(476,345)	(1,657,344)
Total	$ 8,979,649	$ 7,779,408	$ 4,790,089

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The component of income tax expense for the period representing amounts of income taxes paid or payable (or refundable) for the period for all income tax obligations as determined by applying the provisions of relevant enacted tax laws to relevant amounts of taxable Income or Loss from continuing operations.

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