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STOCK-BASED COMPENSATION - Issuance of Stock Under ESPP (Details) - Employee Stock Purchase Plan 2010 - USD ($) $ / shares in Units, $ in Thousands |  | 12 Months Ended
--- | --- | ---
Dec. 31, 2023 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Stock-based compensation |  |  |  |
Stock issued under the Company's stock purchase plan (in shares) | 3,965,807 | 924,448 |  |
Employee Stock |  |  |  |
Stock-based compensation |  |  |  |
Stock issued under the Company's stock purchase plan (in shares) |  | 924,448 | 668,605 | 331,769
Cash received under the 2010 Purchase Plan |  | $ 28,344 | $ 25,491 | $ 23,070
Weighted average fair value per share of options granted during the period (in dollars per share) |  | $ 16.32 | $ 17.52 | $ 34.93

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