v3.10.0.1

Net (Loss) Income per Share Attributable to Common Stockholders - Net (Loss) Income Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jul. 01, 2017	Jun. 30, 2018	Jul. 01, 2017
Numerator:
Net (loss) income attributable to common stockholders, basic	$ (834)	$ 874	$ 1,020	$ 1,066
Net (loss) income attributable to common stockholders, diluted	(834)	874	1,020	1,066
Plus: undistributed earnings allocated to participating securities	0	799	1,508	1,431
Less: undistributed earnings reallocated to participating securities	0	(788)	(1,496)	(1,420)
Net (loss) income attributable to common stockholders	$ (834)	$ 885	$ 1,032	$ 1,077
Denominator:
Weighted average number of shares outstanding, basic	30,591	29,556	30,792	29,352
Dilutive impact from:
Weighted average number of shares outstanding, diluted	30,591	32,220	33,486	31,746
Net (loss) income per share attributable to common stockholders, basic (in dollars per share)	$ (0.03)	$ 0.03	$ 0.03	$ 0.04
Net (loss) income per share attributable to common stockholders, diluted (in dollars per share)	$ (0.03)	$ 0.03	$ 0.03	$ 0.03
Employee Stock Option
Dilutive impact from:
Share-based payment arrangements	0	1,962	1,967	1,786
Restricted stock units
Dilutive impact from:
Share-based payment arrangements	0	702	727	608

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Net Income (Loss) Available to Common Stockholders

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Undistributed Earnings Reallocated, Diluted

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The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method.

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Amount, after deduction of tax, noncontrolling interests, dividends on preferred stock and participating securities; of income (loss) available to common shareholders.

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Amount, after deduction of tax, noncontrolling interests, dividends on preferred stock and participating securities, and addition from assumption of issuance of common shares for dilutive potential common shares; of income (loss) available to common shareholders.

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