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SHARE-BASED COMPENSATION (Details) - USD ($) $ in Thousands | 1 Months Ended | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | --- | ---
Mar. 31, 2022 | Jun. 30, 2018 | Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Dec. 09, 2024 | Dec. 31, 2020
SHARE-BASED COMPENSATION |  |  |  |  |  |  |  |
Annual percentage increase in number of shares authorized for issuance |  | 4.00% |  |  |  |  |  |
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. |  |  |
Share-based compensation expenses |  |  | $ 1,409 | $ 1,419 | $ 4,667 | $ 4,320 |  |
Stock options |  |  |  |  |  |  |  |
SHARE-BASED COMPENSATION |  |  |  |  |  |  |  |
Share-based compensation expenses |  |  | 0 | 0 | 0 | 100 |  |
Unrecognized compensation cost related to non-vested stock options |  |  | 0 |  | $ 0 |  |  |
Number of stock options granted |  |  |  |  | 0 |  |  |
Restricted Stock Units and PRSUs |  |  |  |  |  |  |  |
SHARE-BASED COMPENSATION |  |  |  |  |  |  |  |
Share-based compensation expenses |  |  | 1,400 | $ 1,400 | $ 4,700 | $ 4,200 |  |
Unrecognized compensation cost related to non-vested restricted stock |  |  | $ 11,200 |  | $ 11,200 |  |  |
Non-vested awards not yet recognized weighted-average period for recognition |  |  |  |  | 2 years 2 months 12 days |  |  |
Fair value of restricted stock vested |  |  |  |  | $ 4,600 |  |  |
Restricted stock units |  |  |  |  |  |  |  |
SHARE-BASED COMPENSATION |  |  |  |  |  |  |  |
Number of deferred shares |  |  | 300,000 |  | 300,000 |  |  |
2018 Plan |  |  |  |  |  |  |  |
SHARE-BASED COMPENSATION |  |  |  |  |  |  |  |
Shares available for future issuance |  |  | 4,800,000 |  | 4,800,000 |  |  |
2018 Plan | First Anniversary of Date of Grant |  |  |  |  |  |  |  |
SHARE-BASED COMPENSATION |  |  |  |  |  |  |  |
Vesting percentage of stock options |  |  |  |  | 25.00% |  |  |
2018 Plan | Maximum |  |  |  |  |  |  |  |
SHARE-BASED COMPENSATION |  |  |  |  |  |  |  |
Number of shares authorized for issuance |  | 1,400,000 |  |  |  |  | 5,592,670 |
Maximum contractual term of stock options |  |  |  |  | 10 years |  |  |
2020 Plan |  |  |  |  |  |  |  |
SHARE-BASED COMPENSATION |  |  |  |  |  |  |  |
Number of additional shares authorized for issuance | 500,000 |  |  |  |  |  |  |
Shares available for future issuance |  |  | 300,000 |  | 300,000 |  |  |
2020 Plan | Maximum |  |  |  |  |  |  |  |
SHARE-BASED COMPENSATION |  |  |  |  |  |  |  |
Number of shares authorized for issuance |  |  |  |  |  |  | 1,400,000 | 400,000

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