Earnings per Common Share (Tables)

6 Months Ended

Jun. 29, 2018

Earnings Per Share [Abstract]

Computation of Basic and Diluted Earnings per Common Share

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

	ThreeMonths Ended						Six Months Ended
	June 29,			June 30,			June 29,			June 30,
	2018			2017			2018			2017
Numerators:
Consolidated net income	$	11,625		$	9,990		$	24,462		$	44,264
Less: Net income attributable to noncontrolling interest		(625	)		(588	)		(1,551	)		(610	)
Net income attributable to Novanta Inc.		11,000			9,402			22,911			43,654
Decrease (increase) in estimated redemption value of redeemable noncontrolling interest (see Note 15)		303			(3,718	)		(5,096	)		(3,718	)
Net income attributable to Novanta Inc. after adjustment of redeemable noncontrolling interest to estimated redemption value	$	11,303		$	5,684		$	17,815		$	39,936
Denominators:
Weighted average common shares outstanding— basic		34,949			34,827			34,919			34,796
Dilutive potential common shares		525			636			532			498
Weighted average common shares outstanding— diluted		35,474			35,463			35,451			35,294
Antidilutive common shares excluded from above		—			—			6			—
Earnings per Common Share Attributable to Novanta Inc.:
Basic	$	0.32		$	0.16		$	0.51		$	1.15
Diluted	$	0.32		$	0.16		$	0.50		$	1.13