v3.19.2

Stockholders’ Equity - Share Based Compensation Narrative (Details) - USD ($) $ / shares in Units, $ in Millions | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 29, 2019 | Jun. 29, 2019 | Jun. 30, 2018 | Dec. 29, 2018 | Dec. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Share price (usd per share) | $ 10.98 | $ 10.98 |  |  |
Time-Based Restricted Stock Units |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Accelerated stock-based compensation | $ 3.9 |  |  |  |
Restricted stock units granted (shares) |  | 800,000 |  |  |
Performance-Based Restricted Stock Units |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Restricted stock units granted (shares) | 300,000 | 300,000 |  |  |
Award vesting period |  | 2 years |  | 2 years | 3 years
Restricted stock units |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Restricted stock units granted (shares) |  | 1,114,000 |  |  |
Purchase price for vested RSUs (usd per share) | $ 0.001 | $ 0.001 |  |  |
Settled (RSUs) (usd per share) |  | $ 13.52 |  |  |
Unrecognized compensation cost | $ 23.1 | $ 23.1 |  |  |
Unrecognized compensation cost, period for recognition |  | 2 years 1 month 28 days |  |  |
Restricted Stock Units and Performance-Based Restricted Stock Units |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Settled (RSUs) (usd per share) |  | $ 13.52 | $ 9.60 |  |
Total fair value of vested RSUs |  | $ 5.2 | $ 3.5 |  |
Intrinsic value of options exercised and RSUs vested |  | $ 10.8 | $ 12.8 |  |
Employee Stock Option |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Stock options granted (shares) |  | 0 | 100,000 |  |
Weighted average exercise price (usd per share) |  | $ 0.00 | $ 17.44 |  |
The aggregate fair value of the options vested |  | $ 1.2 | $ 1.2 |  |
Unrecognized compensation cost | $ 3.2 | $ 3.2 |  |  |
Unrecognized compensation cost, period for recognition |  | 1 year 7 months 20 days |  |  |
Total shares of common stock reserved for future issuance | 14,195,000 | 14,195,000 |  |  |
2014 Plan |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Total shares of common stock reserved for future issuance | 3,411,000 | 3,411,000 |  |  |
Research and development | Time-Based Restricted Stock Units |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Accelerated stock-based compensation | $ 3.9 | $ 3.9 |  |  |

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