Earnings per Share (Tables)

6 Months Ended

Jun. 30, 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.

	Six Months Ended June 30,
	2014		2013
Warrants to purchase common stock		22,563,548		1,259,998
Convertible 2017 notes		22,537,983		-
Convertible 2022 notes		4,725,516		4,725,392
Outstanding options to purchase common stock		3,873,563		3,172,213
Unvested restricted common stock		915,518		941,236
Total		54,616,128		10,098,839