Components of the calculations of basic and diluted earnings per share (Tables)

12 Months Ended

Dec. 31, 2013

Components of the calculations of basic and diluted earnings per share:

Components of the calculations of basic and diluted earnings per share

The following table provides the components of the calculations of basic and diluted earnings per share:

		Year Ended December 31,
		2013		2012		2011
Numerator:
	Net loss attributable to common shareholders	$	(62,790,800)	$	(31,862,454)	$	(27,453,954)
Denominator:
	Weighted average number of common shares
	outstanding	76,436,408		34,376,427		18,778,066

Schedule of dilutive potential common shares

The dilutive potential common shares are summarized as follows:

	At December 31,
	2013		2012		2011
Stock options outstanding		4,703,326		1,986,255	1,948,997
Restricted stock outstanding		650,002		-	280,771
Common stock warrants (1)		24,137,878		9,421,008	7,128,563
Preferred stock (2)		10,972,859		-	-
Number of dilutive potential common shares		40,464,065		11,407,263	9,358,331