12. Earnings per Share

The calculations of basic and diluted net income per share and basic and diluted weighted average shares outstanding are as follows for the three months ended December 31, 2018 and 2017 (in thousands, except per share data):


	Three Months Ended
	December 31,
	2018		2017
Income from continuing operations	$	6,266	$	1,619
Income from discontinued operations, net of tax		8,149		14,867
Net income	$	14,415	$	16,486

Weighted average common shares outstanding used in computing basic earnings per share		71,450		70,183
Dilutive restricted stock units		715		681
Weighted average common shares outstanding used in computing diluted earnings per share		72,165		70,864

Basic net income per share attributable to Brooks Automation, Inc. common stockholders:
Income from continuing operations	$	0.09	$	0.02
Income from discontinued operations, net of tax		0.11		0.21
Basic net income per share attributable to Brooks Automation, Inc.	$	0.20	$	0.23

Diluted net income per share attributable to Brooks Automation, Inc. common stockholders:
Income from continuing operations	$	0.09	$	0.02
Income from discontinued operations, net of tax		0.11		0.21
Diluted net income per share attributable to Brooks Automation, Inc. common stockholders	$	0.20	$	0.23
Dividend declared per share	$	0.10	$	0.10

During the three months ended December 31, 2018 and 2017, antidilutive restricted stock units of 261,384 and 190,266, respectively, were excluded from the computation of diluted earnings per share based on the treasury stock method.