FAIR VALUE MEASUREMENTS AND FINANCIAL INSTRUMENTS - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Fair Value Measurements [Line Items]
Number of warrant exercised in cash	125,000	542,300	921,800
Warrants exercise price		3.50	3.50
Number of warrant exercised in cashless basis		187,164	41,880
Number of shares issued on cashless exercise of warrants	48,402	108,855	23,728
Gain on extinguishment of warrant liabilities	$ 73,291	$ 88,777	$ 186,897