INTANGIBLE ASSETS, NET - Additional Information (Detail) (USD $)	3 Months Ended								12 Months Ended
	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010	Sep. 30, 2010	Jun. 30, 2010	Mar. 31, 2010	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Finite-Lived Intangible Assets [Line Items]
Amortization of acquisition-related intangible assets	$ 80,769	$ 80,769	$ 80,769	$ 80,769	$ 80,769	$ 80,769	$ 80,769	$ 80,769	$ 323,076	$ 323,076	$ 4,130,256
Amortization expense									$ 600,000	$ 600,000	$ 500,000