Net Income (Loss) Per Common Share (Tables)

9 Months Ended

Sep. 30, 2014

Earnings Per Share [Abstract]

Calculation of Diluted Net Income (Loss) Per Common Share

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

	Three Months Ended September 30,					Nine Months Ended September 30,
	2014		2013			2014		2013
Numerator:
Net income (loss)	$	77,993	$	(13,313	)	$	112,247	$	(45,381	)
Denominator:
Weighted-average common shares, basic		77,056		75, 255			76,629		75,032
Dilutive effect of common stock equivalents		4,167		—			4,095		—
Weighted-average common shares, diluted		81,223		75,255			80,724		75,032
Net income (loss) per common share:
Basic net income (loss) per common share	$	1.01	$	(0.18	)	$	1.46	$	(0.60	)
Diluted net income (loss) per common share	$	0.96	$	(0.18	)	$	1.39	$	(0.60	)