Net Income per Share Attributable to Common Stockholders (Tables)

6 Months Ended

Jul. 31, 2017

Numerators and Denominators of the Basic and Diluted EPS Computations for Common Stock

The numerators and denominators of the basic and diluted EPS computations for our common stock are calculated as follows (in thousands, except per share data):

	Three months ended July 31,									Six Months Ended July 31,
	2017				2016					2017				2016
	Class A		Class B		Class A			Class B		Class A		Class B		Class A			Class B
Basic
Numerator
Net income	$	30,215	$	7,629	$	9,381		$	3,577	$	57,887	$	15,980	$	17,787		$	7,680
Undistributed earnings allocated to participating securities		—		—		(1	)		—		—		—		(1	)		(1	)
Net income attributable to common stockholders, basic	$	30,215	$	7,629	$	9,380		$	3,577	$	57,887	$	15,980	$	17,786		$	7,679
Denominator
Weighted average shares used in computing net income per share attributable to common stockholders, basic		111,786		28,224		97,823			37,303		109,204		30,147		93,961			40,570
Net income per share attributable to common stockholders, basic	$	0.27	$	0.27	$	0.10		$	0.10	$	0.53	$	0.53	$	0.19		$	0.19

Diluted
Numerator
Net income attributable to common stockholders, basic	$	30,215	$	7,629	$	9,380		$	3,577	$	57,887	$	15,980	$	17,786		$	7,679
Reallocation as a result of conversion of Class B to Class A common stock:
Net income attributable to common stockholders, basic		7,629		—		3,577			—		15,980		—		7,679			—
Reallocation of net income to Class B common stock		—		2,705		—			767		—		5,268		—			1,474
Net income attributable to common stockholders, diluted	$	37,844	$	10,334	$	12,957		$	4,344	$	73,867	$	21,248	$	25,465		$	9,153
Denominator
Number of shares used for basic EPS computation		111,786		28,224		97,823			37,303		109,204		30,147		93,961			40,570
Conversion of Class B to Class A common stock		28,224		—		37,303			—		30,147		—		40,570			—
Effect of potentially dilutive common shares		13,768		13,768		12,029			12,029		13,950		13,950		12,159			12,159
Weighted average shares used in computing net income per share attributable to common stockholders, diluted		153,778		41,992		147,155			49,332		153,301		44,097		146,690			52,729
Net income per share attributable to common stockholders, diluted	$	0.25	$	0.25	$	0.09		$	0.09	$	0.48	$	0.48	$	0.17		$	0.17

Potential Common Share Equivalents Excluded where the Inclusion would be Anti-dilutive

Potential common share equivalents excluded where the inclusion would be anti-dilutive are as follows:

	Three Months Ended July 31,				Six Months Ended July 31,
	2017		2016		2017		2016
Options and awards to purchase shares not included in the computation of diluted net income per share because their inclusion would be anti-dilutive		337,503		2,031,160		558,126		1,757,681