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LOANS PAYABLE - Summary (Details) - USD ($) $ in Thousands | Sep. 30, 2022 | Dec. 31, 2021
--- | --- | ---
LOAN PAYABLE |  |
Loan payable | $ 70,000 | $ 70,000
Add: Accreted Liability of final payment fee | 6,031 | 5,140
Loan payable, gross | 76,031 | 75,140
Less: unamortized debt issuance costs | (5,993) | (7,377)
Loan payable | 70,038 | 67,763
Total loan payable | 70,038 | 67,763
Less: Current portion |  | (975)
Loan payable non-current | $ 70,038 | $ 66,788

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