Earnings per Share (Tables)

6 Months Ended

Jun. 30, 2013

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share

The weighted average of potentially dilutive securities excluded from the computation of diluted earnings per share for the three- and six-month periods ending June 30, 2013 and 2012 is shown per the table below.


	Three Months Ended				Six Months Ended
	June 30, 2013		June 30, 2012		June 30, 2013		June 30, 2012
Basic common stock outstanding		18,179,570		17,636,834		18,106,564		16,629,420


Potentially Dilutive Securities:
Shares underlying the conversion of preferred stock to common stock		10,610,714		10,714,286		10,610,714		10,714,286
Shares underlying the conversion of the convertible senior notes		8,749,239		—		8,749,239		—
Shares underlying warrants to purchase common stock		6,262,380		6,282,659		6,302,668		6,282,659
Shares underlying stock options to purchase common stock		526,813		401,793		533,977		348,682
Shares underlying restricted stock units		436,275		559,381		418,898		613,139

		26,585,421		17,958,119		26,615,496		17,958,766


Diluted weighted shares outstanding		44,764,991		35,594,953		44,722,060		34,588,186