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CONVERTIBLE NOTES (Details) $ / shares in Units, $ in Thousands |  | 12 Months Ended
--- | --- | ---
Sep. 16, 2020 USD ($) item D $ / shares | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($)
CONVERTIBLE NOTES |  |  |
Amortization of financing costs |  | $ 1,447 | $ 1,302
Interest expense |  | 5,750 | 5,750
Convertible Debt |  |  |
CONVERTIBLE NOTES |  |  |
Proceeds from initial issuance of convertible notes | $ 200,000 |  |
Period of option for additional issuance | 30 days |  |
Proceeds from additional issuance of convertible notes | $ 30,000 |  |
Interest rate (as a percent) | 2.50% |  |
Conversion rate | 27.2707 |  |
Conversion rate initial principal amount | $ 1,000 |  |
Conversion price (in dollars per share) | $ / shares | $ 36.67 |  |
Sales price of common stock as percentage of conversion price for redemption at Company's option | 130.00% |  |
Number of trading days that threshold percentage exceeds stock price for trigger of redemption at Company's option | item | 20 |  |
Period of consecutive trading days that the threshold of trading days must fall within for trigger of redemption at Company's option | D | 30 |  |
Redemption prices as percentage of outstanding principal amount plus accrued and unpaid interest following occurrence of certain tax related events | 100.00% |  |
Carrying value of convertible notes |  | 227,424 | 225,977
Unamortized issuance costs |  | $ 2,576 | 4,023
Effective interest rate (as a percent) |  | 3.18% |
Interest not paid recorded in other payables |  | $ 1,438 | $ 1,438

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