Net Income (Loss) Per Common Share (Tables)

6 Months Ended

Jun. 30, 2014

Earnings Per Share [Abstract]

Calculation of Diluted Net (Loss) Income Per Common Share

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

	Three Months Ended June 30,					Six Months Ended June 30,
	2014		2013			2014		2013
Numerator:
Net income (loss)	$	47,919	$	(4,898	)	$	34,254	$	(32,068	)
Denominator:
Weighted-average common shares, basic		76,577		75,013			76,411		74,919
Dilutive effect of common stock equivalents		3,914		—			4,076		—
Weighted-average common shares, diluted		80,491		75,013			80,487		74,919
Net income (loss) per common share:
Basic net income (loss) per common share	$	0.63	$	(0.07	)	$	0.45	$	(0.43	)
Diluted net income (loss) per common share	$	0.60	$	(0.07	)	$	0.43	$	(0.43	)