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STOCKHOLDERS' EQUITY - Stock-Based Compensation (Details) - USD ($) $ in Thousands |  | 3 Months Ended | 6 Months Ended
--- | --- | --- | ---
Jun. 22, 2023 | Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] |  |  |  |  |
Net earnings |  | $ (2,881) | $ (2,933) | $ (6,563) | $ (5,312)
Expiration period of options granted |  |  |  | 10 years |
Shares available for future awards (in shares) |  | 1,034,630 |  | 1,034,630 |
Additional shares approved (in shares) | 800,000 |  |  |  |
Stock options | Minimum |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] |  |  |  |  |
Vesting period |  |  |  | 3 years |
Stock options | Maximum |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] |  |  |  |  |
Vesting period |  |  |  | 5 years |
Restricted stock |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] |  |  |  |  |
Vesting period |  |  |  | 3 years |
Restricted stock | Non-employee director |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] |  |  |  |  |
Vesting period |  |  |  | 3 years |
Performance shares |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] |  |  |  |  |
Vesting period |  |  |  | 3 years |
Cost of sales |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] |  |  |  |  |
Stock-based compensation cost |  | $ 545 | 277 | $ 959 | 676
Operating expenses |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] |  |  |  |  |
Stock-based compensation cost |  | $ 3,203 | $ 3,535 | $ 7,559 | $ 6,213

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