Earnings (Loss) per Common Share (Tables)

12 Months Ended

Dec. 31, 2016

Earnings Per Share [Abstract]

Computation of Basic and Diluted Earnings (Loss) Per Share

The following table sets forth the computation of basic and diluted earnings (loss) per share (in thousands, except per share amounts):

	Year Ended December 31,
	2016		2015			2014
Numerators:
Income (loss) from continuing operations	$	22,003	$	35,628		$	(16,909	)
Consolidated loss from discontinued operations		—		(13	)		(7,333	)
Less: income attributable to noncontrolling interest		—		—			(10	)
Loss from discontinued operations attributable to Novanta Inc.		—		(13	)		(7,343	)
Net income (loss) attributable to Novanta Inc.	$	22,003	$	35,615		$	(24,252	)
Denominators:
Weighted average common shares outstanding— basic		34,694		34,579			34,352
Dilutive potential common shares		220		248			—
Weighted average common shares outstanding— diluted		34,914		34,827			34,352
Antidilutive common shares excluded from above		85		—			439
Basic Earnings (Loss) per Common Share:
From continuing operations	$	0.63	$	1.03		$	(0.49	)
From discontinued operations	$	—	$	(0.00	)	$	(0.21	)
Basic earnings (loss) per share attributable to Novanta Inc.	$	0.63	$	1.03		$	(0.70	)
Diluted Earnings (Loss) per Common Share:
From continuing operations	$	0.63	$	1.02		$	(0.49	)
From discontinued operations	$	—	$	(0.00	)	$	(0.21	)
Diluted earnings (loss) per share attributable to Novanta Inc.	$	0.63	$	1.02		$	(0.70	)