| Schedule of Earnings Per Share, Basic and Diluted |
The calculations of basic and diluted net (loss) income per share and basic and dilutive weighted-average shares outstanding for the three and six months ended June 30, 2018 and July 1, 2017 were as follows (in thousands, except per share data): | | | | | | | | | | | | | | | | | | Three Months Ended | | Six Months Ended | | June 30, 2018 | | July 1, 2017 | | June 30, 2018 | | July 1, 2017 | Numerator: | | | | | | | | Basic: | | | | | | | | Net (loss) income attributable to common stockholders | $ | (834 | ) | | $ | 874 |
| | $ | 1,020 |
| | $ | 1,066 |
| Dilutive: | | | | | | | | Net (loss) income attributable to common stockholders | $ | (834 | ) | | $ | 874 |
| | $ | 1,020 |
| | $ | 1,066 |
| Plus: undistributed earnings allocated to participating securities | — |
| | 799 |
| | 1,508 |
| | 1,431 |
| Less: undistributed earnings reallocated to participating securities | — |
| | (788 | ) | | (1,496 | ) | | (1,420 | ) | Net (loss) income attributable to common stockholders | $ | (834 | ) | | $ | 885 |
| | $ | 1,032 |
| | $ | 1,077 |
| | | | | | | | | Denominator: | | | | | | | | Weighted-average shares outstanding - basic | 30,591 |
| | 29,556 |
| | 30,792 |
| | 29,352 |
| | | | | | | | | Dilutive impact from: | | | | | | | | Options outstanding | — |
| | 1,962 |
| | 1,967 |
| | 1,786 |
| Restricted stock units | — |
| | 702 |
| | 727 |
| | 608 |
| Weighted-average shares outstanding - dilutive | 30,591 |
| | 32,220 |
| | 33,486 |
| | 31,746 |
| | | | | | | | | Net (loss) income per share attributable to common stockholders (Basic): | $ | (0.03 | ) | | $ | 0.03 |
| | $ | 0.03 |
| | $ | 0.04 |
| Net (loss) income per share attributable to common stockholders (Diluted): | $ | (0.03 | ) | | $ | 0.03 |
| | $ | 0.03 |
| | $ | 0.03 |
|
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| Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share |
The following equity shares were excluded from the calculation of diluted net income per share attributable to common stockholders because their effect would have been antidilutive for the periods presented (in thousands): | | | | | | | | | | | | | | Three Months Ended | | Six Months Ended | | June 30,
2018 | | July 1,
2017 | | June 30,
2018 | | July 1,
2017 | Stock options | 4,002 |
| | 1,398 |
| | 971 |
| | 1,292 |
| Restricted stock units | 2,514 |
| | 24 |
| | 685 |
| | 14 |
| Series A Redeemable Convertible Preferred Stock (as converted to common stock) | 4,915 |
| | 4,659 |
| | 4,915 |
| | 4,659 |
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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. |