NET LOSS PER COMMON SHARE DATA (Tables)

6 Months Ended

Jun. 30, 2012

NET LOSS PER COMMON SHARE DATA

Schedule of computation of basic and diluted net loss attributable to common stockholders per common share, as well as a reconciliation of the numerator and denominator used in the computation

	Three Months Ended June 30,						Six Months Ended June 30,
	2012			2011			2012			2011
Net loss	$	(2,338,538	)		(2,210,339	)	$	(5,719,182	)		(4,145,669	)
Loss on deemed Preferred Stock redemption					(6,906,566	)					(6,906,566	)
Net loss attributable to common stockholders	$	(2,338,538	)		(9,116,905	)	$	(5,719,182	)		(11,052,235	)
Denominator:
Weighted-average common shares outstanding		7,821,058			2,164,523			7,806,241			2,163,846
Basic and diluted net loss per common share	$	(0.30	)		(4.21	)	$	(0.73	)		(5.11	)

Schedule of equivalent shares excluded from the calculation of diluted loss per share as their impact would have been anti-dilutive

	Six Months Ended June 30,
	2012		2011
Options to purchase common stock		1,811,941		2,081,774
Warrants		2,215,680		636,276
Restricted stock		122,167		191,166
Convertible preferred stock (as converted basis)				1,448,333