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FAIR VALUE OF FINANCIAL INSTRUMENTS - Narrative (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Jan. 31, 2024	Dec. 31, 2023	Jun. 30, 2023	Jun. 09, 2023	Mar. 15, 2023	Dec. 31, 2022	Mar. 31, 2018
Debt Instrument [Line Items]
Warrants fair value	$ 3,035		$ 0
Level 3 \| Shares issuable upon the exercise of the Common Warrants
Debt Instrument [Line Items]
Warrants fair value	3,000	$ 5,000
Senior Notes \| 5.0% Secured Promissory Note \| Affiliated Entity \| Schuler Trust
Debt Instrument [Line Items]
Alternative investment	0	$ 3,400
Senior Notes \| 2.50% Convertible Notes Due 2023 \| Affiliated Entity
Debt Instrument [Line Items]
Carrying amount	$ 700		700
Convertible Notes \| 5.00% Convertible Notes Due 2026
Debt Instrument [Line Items]
Interest rate	5.00%			5.00%	5.00%
Outstanding principal amount	$ 67,554		67,634
Carrying amount	37,655		36,102
Convertible Notes \| 5.00% Convertible Notes Due 2026 \| Level 3
Debt Instrument [Line Items]
Fair value	$ 42,600		50,800		$ 38,200
Convertible Notes \| 2.50% Convertible Notes Due 2023
Debt Instrument [Line Items]
Interest rate	2.50%					2.50%		2.50%
Outstanding principal amount	$ 726		726
Carrying amount	$ 726		$ 726	$ 66,900			$ 56,400