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DEBT - Components of Debt (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Total carrying amount	$ 228,163	$ 298,307
Current Portion	906	71,797
Non-Current Portion	227,257	226,510
2019 Notes | Convertible Senior Notes
Debt Instrument [Line Items]
Long-term debt, gross	227,257	226,510
Discount and debt issuance costs	2,700	3,500
Term Loan
Debt Instrument [Line Items]
Long-term debt, gross	0	70,000
Other
Debt Instrument [Line Items]
Long-term debt, gross	$ 906	$ 1,797

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