v3.21.2

STOCK-BASED COMPENSATION (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jul. 04, 2021 | Jun. 28, 2020 | Jul. 04, 2021 | Jun. 28, 2020 | Jun. 28, 2015
Stock-based compensation |  |  |  |  |
Stock-based compensation expense | $ 320 | $ 111 | $ 638 | $ 248 |
Stock Options |  |  |  |  |
Stock-based compensation |  |  |  |  |
Stock-based compensation expense | 94 | 44 | 183 | 125 |
Restricted Stock |  |  |  |  |
Stock-based compensation |  |  |  |  |
Stock-based compensation expense | $ 226 | $ 67 | $ 455 | $ 123 |
Employees and Directors | Stock Options |  |  |  |  |
Stock-based compensation |  |  |  |  |
Expiration period |  |  | 10 years |  |
Employees and Directors | Minimum | Stock Options |  |  |  |  |
Stock-based compensation |  |  |  |  |
Vesting period |  |  | 2 years |  |
Employees and Directors | Maximum | Stock Options |  |  |  |  |
Stock-based compensation |  |  |  |  |
Vesting period |  |  | 5 years |  |
2015 Plan |  |  |  |  |
Stock-based compensation |  |  |  |  |
Shares authorized for issuance |  |  |  |  | 2,000,000
Shares available for grant | 685,324 |  | 685,324 |  |
2005 Plan |  |  |  |  |
Stock-based compensation |  |  |  |  |
Shares available for grant | 0 |  | 0 |  |

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