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STOCK-BASED COMPENSATION - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands |  |  |  | 12 Months Ended
--- | --- | --- | --- | ---
Jan. 01, 2026 | Jan. 01, 2025 | Jan. 01, 2024 | Dec. 31, 2025 | Dec. 31, 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Options granted in period (in shares) |  |  |  | 84,000 |
Total stock-based compensation expense |  |  |  | $ 28,696 | $ 34,872
Exercised |  |  |  | $ 695 | $ 10,100
Fair value of stock (in dollars per share) |  |  |  | $ 10.36 | $ 40.92
Granted (in shares) |  |  |  | 3,901,706 | 5,384,760
Shares reserved for future issuance (in shares) |  |  |  | 9,406,212 | 7,494,238
Term Loan Credit Agreement Three Amendment |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Share based compensation arrangement by share based payment award, annual increase percent of shares outstanding |  |  |  | 1.00% |
Performance Based Awards |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Granted (in shares) |  |  |  | 90,500 |
Total stock-based compensation expense |  |  |  | $ 0 |
Unrecognized stock-based compensation expense related to unvested stock options |  |  |  | $ 1,400 |
Granted (in shares) |  |  |  | 125,000 |
Unvested RSU awards |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Granted (in shares) |  |  |  | 716,850 | 0
Granted (in USD per share) |  |  |  | $ 11.71 | $ 0
Aggregate fair value of RSU awards vested |  |  |  | $ 500 | $ 0
Unrecognized stock-based compensation expense related to unvested stock options |  |  |  | $ 6,900 |
Unvested award, period for recognition |  |  |  | 1 year 8 months 15 days |
Shares reserved for future issuance (in shares) |  |  |  | 716,850 | 0
Unvested Stock Options |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Unrecognized stock-based compensation expense related to unvested stock options |  |  |  | $ 22,900 |
Performance Based Stock Options |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Total stock-based compensation expense |  |  |  | 2,000 |
Unrecognized stock-based compensation expense related to unvested stock options |  |  |  | 2,900 |
Share-based payment arrangement, nonvested award, cost not yet recognized, recognition expected |  |  |  | 400 |
Share-based payment arrangement, nonvested award, cost not yet recognized, recognition not probable |  |  |  | $ 2,500 |
Options to purchase common stock |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Unvested award, period for recognition |  |  |  | 1 year 5 months 26 days |
Shares reserved for future issuance (in shares) |  |  |  | 3,901,706 | 5,384,760
2017 Plan |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Number of shares authorized (in shares) |  |  |  | 412,099 |
2020 Plan |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Annual percentage increase in shares authorized |  |  |  | 4.00% |
Number of additional shares authorized (in shares) |  | 1,622,188 | 1,273,643 | 3,146,054 |
Vesting period |  |  |  | 4 years |
Contractual term |  |  |  | 10 years |
Options granted in period (in shares) |  |  |  | 3,489,607 |
Number of shares available for future grants (in shares) |  | 405,547 |  | 455,852 |
2020 Plan | Subsequent Event |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Number of additional shares authorized (in shares) | 781,748 |  |  |  |
Number of shares available for future grants (in shares) | 195,437 |  |  |  |
Employee Stock Purchase Plan Twenty Twenty Member |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Issuance of common stock under the employee stock purchase plan (in shares) |  |  |  | 11,806 |
Shares reserved for future issuance (in shares) |  |  |  | 1,641,602 |

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