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DEBT - Future Annual Principal Payments (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	May 21, 2022
Maturities of long-term debt
Total	$ 33,957	$ 33,957
Athyrium Credit Facility
Maturities of long-term debt
2025	23,970
2026	9,987
Total	$ 33,957
Loan Agreement
Maturities of long-term debt
Total			$ 33,957	$ 80,000

X

- Definition

Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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