Earnings per Share (Tables)

3 Months Ended

Mar. 31, 2014

Securities that Potentially Dilute Calculation of Diluted Earnings Per Share

The following table sets forth securities outstanding that could potentially dilute the calculation of diluted earnings per share.

	Three Months Ended March 31,
	2014		2013
Warrants to purchase common stock		22,563,748		1,229,998
Convertible debt		4,725,514		6,287,090
Outstanding options to purchase common stock		3,741,150		3,319,450
Unvested restricted common stock		1,009,485		1,113,310
Total		32,039,897		11,949,848