12. 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 July 31,				Six Months Ended July 31,
	2017		2016		2017		2016
	(in thousands, except share and per share data)
Numerator:
Net income	$	3,303	$	8,632	$	5,867	$	10,415
Denominator:
Weighted-average ordinary shares - basic		33,227,717		32,557,398		33,240,767		32,492,723
Effect of potentially dilutive securities:
Employee stock options		984,064		1,074,331		995,107		1,062,310
Restricted stock and restricted stock units		356,253		530,279		389,498		498,128
Employee stock purchase plan		4,893		13,458		3,632		9,942
Weighted-average ordinary shares - diluted		34,572,927		34,175,466		34,629,004		34,063,103
Net income per ordinary share:
Basic	$	0.10	$	0.27	$	0.18	$	0.32
Diluted	$	0.10	$	0.25	$	0.17	$	0.31

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 July 31,				Six Months Ended July 31,
	2017		2016		2017		2016
Options to purchase ordinary shares		271,516		471,534		266,619		476,116
Restricted stock and restricted stock units		796,472		893,341		854,799		1,047,630
Employee stock purchase plan		—		—		12,974		17,191
		1,067,988		1,364,875		1,134,392		1,540,937