Stockholders’ Equity - Shares Reserved for Issuance (Details) - shares |
Jun. 29, 2019 |
Dec. 29, 2018 |
|---|---|---|
| Employee Stock Option | ||
| Class of Stock [Line Items] | ||
| Options issued and outstanding (shares) | 3,189,000 | 3,524,000 |
| Common stock available for stock-based award grants under incentive award plans (shares) | 14,195,000 | |
| Restricted stock units | ||
| Class of Stock [Line Items] | ||
| Restricted stock units issued and outstanding (shares) | 2,412,000 | 2,123,000 |
| 2014 Plan | ||
| Class of Stock [Line Items] | ||
| Common stock available for stock-based award grants under incentive award plans (shares) | 3,411,000 | |
| Common Stock | ||
| Class of Stock [Line Items] | ||
| Common stock available for conversion of Series A Redeemable Convertible Preferred Stock (shares) | 5,183,000 |