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Net Loss Per Share Attributable to Common Stockholders | 6 Months Ended
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Jun. 29, 2019
Earnings Per Share [Abstract] |
Net Loss Per Share Attributable to Common Stockholders | Net Loss Per Share Attributable to Common Stockholders The Company calculates basic and diluted net loss per share attributable to common stockholders in conformity with the two-class method required for companies with participating securities. The Company considers all series of convertible preferred stock issued and outstanding prior to the IPO to be participating securities. Under the two-class method, the net loss attributable to common stockholders is not allocated to the convertible preferred stock as the holders of convertible preferred stock issued and outstanding prior to the IPO do not have a contractual obligation to share in losses. The diluted net loss per share attributable to common stockholders is computed by giving effect to all potential dilutive common stock equivalents outstanding for the period. For purposes of this calculation, options to purchase common stock, RSUs, common stock warrants and securities such as convertible preferred stock and convertible preferred stock warrants that were issued and outstanding before the Company’s IPO, are considered common stock equivalents but have been excluded from the calculation of diluted net loss per share attributable to common stockholders as their effect is antidilutive. Basic and diluted net loss per common share was the same for each period presented, as the inclusion of all potential common shares outstanding would have been antidilutive. At June 29, 2019 and June 30, 2018, 6,559,565 shares and 5,296,339 shares, respectively, were excluded from the dilution calculation because their inclusion would have been antidilutive.
(in thousands, except share and per share amounts) |  | Three Months Ended |  | Six Months Ended
| June 29, 2019 |  | June 30, 2018 |  | June 29, 2019 |  | June 30, 2018
Numerator: |  |  |  |  |  |  |  |
Net loss |  | $ | (9,441 | ) |  | $ | (7,396 | ) |  | $ | (16,090 | ) |  | $ | (13,092 | )
Denominator: |  |  |  |  |  |  |  |
Weighted average common shares outstanding—basic |  | 39,081,359 |  |  | 6,072,319 |  |  | 23,206,203 |  |  | 5,933,806 |
Dilutive effect of stock equivalents resulting from stock options, RSUs, common stock warrants, preferred stock warrants and convertible preferred stock (as converted) |  | — |  |  | — |  |  | — |  |  | — |
Weighted average common shares outstanding—diluted |  | 39,081,359 |  |  | 6,072,319 |  |  | 23,206,203 |  |  | 5,933,806 |
Net loss per common share—basic and diluted |  | $ | (0.24 | ) |  | $ | (1.22 | ) |  | $ | (0.69 | ) |  | $ | (2.21 | )

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 + Details
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