Net Income Per Ordinary Share (Tables)

9 Months Ended

Oct. 31, 2015

Computation of Basic and Diluted Net Income Per Ordinary Share

The following table sets forth the computation of basic and diluted net income per ordinary share for the periods indicated:

	Three Months Ended					Nine Months Ended
	October 31,					October 31,
	2015		2014			2015			2014
	(in thousands, except share and per share data)
Numerator:
Net income	$	29,461	$	18,327		$	71,412		$	32,897
Less: amount allocable to unvested early exercised options		—		(1	)		—			(8	)
Net income allocable to ordinary shareholders - basic	$	29,461	$	18,326		$	71,412		$	32,889
Undistributed earnings reallocated to ordinary shareholders		—		—			—			1
Net income allocable to ordinary shareholders - diluted	$	29,461	$	18,326		$	71,412		$	32,890
Denominator:
Weighted-average ordinary shares outstanding		31,815,588		30,009,218			31,476,724			29,474,364
Less: weighted-average unvested early exercised options subject to repurchase		—		(2,322	)		(56	)		(7,186	)
Weighted-average ordinary shares - basic		31,815,588		30,006,896			31,476,668			29,467,178
Effect of potentially dilutive securities:
Employee stock options		1,199,065		1,719,140			1,316,228			1,902,988
Restricted stock		881,605		646,661			957,263			633,799
Employee stock purchase plan		2,944		9,829			8,382			10,408
Weighted-average ordinary shares - diluted		33,899,202		32,382,526			33,758,541			32,014,373
Net income per ordinary share:
Basic	$	0.93	$	0.61		$	2.27		$	1.12
Diluted	$	0.87	$	0.57		$	2.12		$	1.03

Weighted-Average Potentially Dilutive Securities Excluded from Computation of Diluted Net Income Per Ordinary Share

The following weighted-average potentially dilutive securities were excluded from the computation of diluted net income per ordinary share as their effect would have been antidilutive:

	Three Months Ended October 31,				Nine Months Ended October 31,
	2015		2014		2015		2014
Options to purchase ordinary shares		135,617		316,208		73,377		209,769
Restricted stock		237,285		586,474		110,096		223,602
Employee stock purchase plan		22,865		50,111		12,098		48,147
Early exercised options subject to repurchase		—		2,322		56		7,186
		395,767		955,115		195,627		488,704