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FAIR VALUE MEASUREMENTS AND FINANCIAL INSTRUMENTS - Debt (Details) - 2019 Notes - Level 1 - Convertible Senior Notes - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Carrying amount
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt	$ 229,092	$ 228,572
Fair value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt	$ 238,790	$ 220,292

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