Net (Loss) Income Per Common Share (Tables)

3 Months Ended

Mar. 31, 2013

Earnings Per Share [Abstract]

Calculation of Diluted Net (Loss) Income Per Common Share

The following table reconciles the denominator used to calculate diluted net (loss) income per common share:

	Three Months Ended March 31,
	2013			2012
Numerator:
Net (loss) income	$	(27,170	)	$	440
Denominator:
Weighted-average common shares, basic		74,824			71,907
Dilutive effect of common stock equivalents		—			5,392
Weighted-average common shares, diluted		74,824			77,299
	Three Months Ended March 31,
	2013			2012
Net (loss) income per common share—basic	$	(0.36	)	$	0.01
Net (loss) income per common share—diluted	$	(0.36	)	$	0.01

Schedule of Potentially Dilutive Securities

Outstanding securities, and the number of potentially dilutive common shares underlying such securities, were as follows at March 31, 2013:

	March 31,
	2013
Stock options		6,898
Convertible Notes		5,050
Stock appreciation rights (1)		427
Restricted stock units		383
Warrants		46
Total		12,804