11. Net Loss Per Common Share Data

12 Months Ended

Dec. 31, 2012

Earnings Per Share Reconciliation Disclosure

11. NET LOSS PER COMMON SHARE DATA

The following table sets forth the 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:

	Year Ended December 31,
	2012			2011
Net loss	$	(9,820,625	)	$	(9,053,764	)
Deemed preferred stock redemption		—			(6,906,566	)
Net loss attributable to common stockholders	$	(9,820,625	)	$	(15,960,330	)
Denominator:
Weighted-average common shares outstanding		7,998,662			2,164,232
Basic and diluted net loss per common share	$	(1.23	)	$	(7.37	)

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

	Year Ended December 31,
	2012		2011
Options to purchase common stock		625,000		2,101,774
Warrants		1,981,661		2,219,546
Restricted stock		122,666		191,166