Net Income Per Share Available to Common Stock (Tables)

9 Months Ended

Sep. 30, 2018

Schedule of Basic and Diluted Net Income Per Share Available to Common Stock

The following table sets forth the computation of our basic and diluted net income per share available to common stock (in thousands, except per share amounts):



	Three Months Ended September 30,						Nine Months Ended September 30,
	2018			2017			2018			2017
Numerator:
Basic:
Net income	$	168,524		$	133,722		$	157,793		$	319,368
Less: undistributed earnings allocated to participating securities	(85		)	(182		)	(87		)	(725		)
Net income available to common stockholders, basic	$	168,439		$	133,540		$	157,706		$	318,643
Diluted:
Net income attributable to common stockholders, basic	$	168,439		$	133,540		$	157,706		$	318,643
Add: undistributed earnings allocated to participating securities	6			15			7			61
Net income attributable to common stockholders, diluted	$	168,445		$	133,555		$	157,713		$	318,704
Denominator:
Basic:
Weighted-average shares used in computing net income per share available to common stockholders, basic	75,011			72,588			74,506			71,903
Diluted:
Weighted-average shares used in computing net income per share available to common stockholders, basic	75,011			72,588			74,506			71,903
Add weighted-average effect of dilutive securities:
Stock options and RSUs	5,967			6,636			6,298			6,528
Employee stock purchase plan	40			98			40			97
Weighted-average shares used in computing net income per share available to common stockholders, diluted	81,018			79,322			80,844			78,528
Net income per share attributable to common stockholders:
Basic	$	2.25		$	1.84		$	2.12		$	4.43
Diluted	$	2.08		$	1.68		$	1.95		$	4.06

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share

The following weighted-average outstanding shares of common stock equivalents were excluded from the computation of diluted net income per share available to common stockholders for the periods presented because including them would have been anti-dilutive (in thousands):



	Three Months Ended September 30,		Nine Months Ended September 30,
	2018	2017	2018	2017
Stock options and RSUs to purchase common stock	82	14	87	73
Employee stock purchase plan	98	—	59	—
Total	180	14	146	73