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 | |||