Net Income Per Common Share (Tables)

6 Months Ended

Jun. 30, 2015

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 per common share:

	Three Months Ended June 30,				Six Months Ended June 30,
	2015		2014		2015		2014
Numerator:
Net income	$	25,826	$	47,919	$	22,708	$	34,254
Denominator:
Weighted-average common shares, basic		79,252		76,577		78,788		76,411
Dilutive effect of common stock equivalents		5,093		3,914		2,710		4,076
Weighted-average common shares, diluted		84,345		80,491		81,498		80,487
Net income per common share:
Basic net income per common share	$	0.33	$	0.63	$	0.29	$	0.45
Diluted net income per common share	$	0.31	$	0.60	$	0.28	$	0.43