Net Income (Loss) Per Ordinary Share (Tables)

9 Months Ended

Oct. 31, 2018

Earnings Per Share [Abstract]

Computation of Basic and Diluted Net Income (Loss) Per Ordinary Share

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

	ThreeMonths Ended October 31,					NineMonths Ended October 31,
	2018			2017		2018			2017
	(in thousands, except share and per share data)
Numerator:
Net income (loss)	$	(9,021	)	$	11,724	$	(25,904	)	$	17,591
Denominator:
Weighted-average ordinary shares - basic		32,171,890			33,128,761		32,908,614			33,203,432
Effect of potentially dilutive securities:
Employee stock options		—			913,496		—			967,903
Restricted stock and restricted stock units		—			311,430		—			363,476
Employee stock purchase plan		—			5,206		—			4,157
Weighted-average ordinary shares - diluted		32,171,890			34,358,893		32,908,614			34,538,968
Net income (loss) per ordinary share:
Basic	$	(0.28	)	$	0.35	$	(0.79	)	$	0.53
Diluted	$	(0.28	)	$	0.34	$	(0.79	)	$	0.51

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

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

	Three Months Ended October 31,				Nine Months Ended October 31,
	2018		2017		2018		2017
Options to purchase ordinary shares		1,247,117		290,648		1,172,152		274,629
Restricted stock and restricted stock units		2,243,272		1,224,115		1,494,860		977,904
Employee stock purchase plan		58,530		36,076		35,204		20,675
		3,548,919		1,550,839		2,702,216		1,273,208