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STOCK-BASED COMPENSATION - Employee Stock Purchase Plan and Stock-based Compensation Expense (Details) - USD ($) |  | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
Jul. 01, 2021 | Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |
Stock option compensation expense |  | $ 2,291,000 | $ 2,603,000 | $ 5,828,000 | $ 6,928,000
Options |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |
Stock option compensation expense |  | $ 0 | $ 0 | 0 | $ 0
Unrecognized stock option compensation expense |  |  |  | $ 0 |
Employee Stock Purchase Plan |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |  |  |
Discount through voluntary payroll deductions | 15.00% |  |  |  |
Remaining shares available for issuance (in shares) | 600,000 | 406,700 |  | 406,700 |

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