Net (Loss) Income per Share Attributable to Common Stockholders (Tables)

The calculations of basic and diluted net (loss) income per share and basic and dilutive weighted-average shares outstanding for the three and nine months ended September 30, 2017 and September 24, 2016 were as follows (in thousands, except per share data):



	Three Months Ended						Nine Months Ended
	September 30, 2017			September 24, 2016			September 30, 2017		September 24, 2016
Numerator:
Net (loss) income attributable to common stockholders - basic	$	(418	)	$	(4,010	)	$	704	$	(674	)
Net (loss) income attributable to common stockholders - diluted	$	(418	)	$	—		$	712	$	—

Denominator:
Weighted-average shares outstanding - basic	29,825			28,769			29,510		31,045

Dilutive impact from:
Options outstanding	1,962			—			1,869		—
Restricted stock units	734			—			706		—
Weighted-average shares outstanding - dilutive	32,521			28,769			32,085		31,045

Net (loss) income per share attributable to common stockholders (Basic):
(Loss) income from continuing operations attributable to common stockholders	$	(0.01	)	$	(0.14	)	$	0.02	$	(0.27	)
Income from discontinued operations attributable to common stockholders	—			—			—		0.25
Net (loss) income per share attributable to common stockholders	$	(0.01	)	$	(0.14	)	$	0.02	$	(0.02	)

Net (loss) income per share attributable to common stockholders (Diluted):
(Loss) income from continuing operations attributable to common stockholders	$	(0.01	)	$	(0.14	)	$	0.02	$	(0.27	)
Income from discontinued operations attributable to common stockholders	—			—			—		0.25
Net (loss) income per share attributable to common stockholders	$	(0.01	)	$	(0.14	)	$	0.02	$	(0.02	)

The following equity shares were excluded from the calculation of diluted net income per share from continuing operations and discontinued operations because their effect would have been antidilutive for the periods presented (in thousands):



	Three Months Ended		Nine Months Ended
	September 30, 2017	September 24, 2016	September 30, 2017	September 24, 2016
Stock options	1,385	4,444	1,334	4,444
Restricted stock units	184	1,940	108	1,940
Series A Redeemable Convertible Preferred Stock (as converted to common stock)	4,724	4,473	4,724	4,473

The Series A Preferred Stock is considered antidilutive due to the fact that the two-class method was more dilutive when calculating dilutive net income per share attributable to common stockholders.