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Stockholders' Equity - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 28, 2019 | Dec. 29, 2018 | Dec. 27, 2019
Exercisable period | 2 years 7 months 13 days |  |
Percentage of fair market value of Commons stock date of grant | 100.00% |  |
Share based payment award number of shares of common stock for each share | 1.5 |  |
Total unrecognized compensation cost related to non-vested share-based compensation arrangements | $ 3,100 |  |
Cost is expected to be recognized over a weighted average period | 2 years 9 months 10 days |  |
Weighted-average grant date fair value of the options granted | $ 1.65 | $ 2.27 |
Total intrinsic value of options exercised | $ 0 | $ 72,000 |
Unvested restricted stock awarded | 443,036 | 628,125 |
Restricted Stock Units (RSUs) |  |  |
Grant of non-qualified stock option |  | $ 40 |
The intrinsic value of the restricted stock units |  |  | $ 2.35
Number of shares, vested | 222,371 | 86,941 |
Restricted stock units released, intrinsic value | $ 1,000 |  |
Restricted stock units released, Shares withheld | 39,400 |  |
Restricted stock units released, value withheld | $ 156 |  |
Unvested restricted stock awarded | 295,357 | 418,750 |
Weighted-average grant date fair value of restricted stock awarded | $ 2.28 | $ 7.79 |
1998 Stock Plan |  |  |
Voting rights on outstanding capital stock | 10.00% |  |
Exercise price of option | 110.00% |  |
Term of incentive stock options for major stock holders | 5 years |  |
Exercisable period | 4 years |  |
Maximum term of incentive stock options granted | 10 years |  |
Expiration date of option Plan | 2008-02 |  |
2008 Equity Incentive Plan |  |  |
Grant of non-qualified stock option | 3,850,000 |  |
Performance Award | Restricted Stock Units (RSUs) |  |  |
Unvested restricted stock awarded | 92,417 |  |
Weighted-average grant date fair value of restricted stock awarded | $ 1.90 |  |

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