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SHARE-BASED COMPENSATION - Additional Information (Details) $ in Thousands, shares in Millions | 1 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Mar. 31, 2022 shares | Dec. 31, 2023 USD ($) installment shares | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Annual percentage increase in number of shares authorized for issuance |  | 4.00% |  |  |
Share-based compensation expenses |  | $ 7,319 | $ 8,746 | $ 7,869 |
Intrinsic value of stock options exercised |  | 0 | 200 | 8,200 |
Employee Stock Option [Member] |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Share-based compensation expenses |  | 400 | 700 | 800 |
Unrecognized compensation cost related to non-vested stock options |  | $ 100 |  |  |
Non-vested awards not yet recognized weighted-average period for recognition |  | 6 months |  |  |
Restricted Stock Units and PRSUs |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Share-based compensation expenses |  | $ 6,900 | 8,100 | 7,100 |
Non-vested awards not yet recognized weighted-average period for recognition |  | 1 year 8 months 12 days |  |  |
Unrecognized compensation cost related to non-vested restricted stock |  | $ 7,700 |  |  |
Fair value of restricted stock vested |  | $ 8,600 | $ 2,500 | $ 14,100 |
2018 Plan |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Vesting terms of stock options |  | stock options vest 25% upon the first anniversary of the date of grant and the remainder ratably monthly thereafter for 36 months. Restricted stock units generally vest ratably in three equal installments on the first, second and third anniversaries of the grant date. |  |  |
Number of vesting installments | installment |  | 3 |  |  |
Shares available for future issuance | shares |  | 0.7 |  |  |
2018 Plan | PRSUs | Common Stock |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Weighted average price, number of days trailing |  | 30 days |  |  |
2018 Plan | First Anniversary of Date of Grant |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Vesting percentage of stock options |  | 25.00% |  |  |
2018 Plan | Maximum |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Number of shares authorized for issuance | shares |  | 1.4 |  |  |
Maximum contractual term of stock options |  | 10 years |  |  |
2020 Plan |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Number of additional shares authorized for issuance | shares | 0.5 |  |  |  |
Shares available for future issuance | shares |  | 0.3 |  |  |
2020 Plan | Maximum |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |
Number of shares authorized for issuance | shares |  |  |  |  | 0.4

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