LOANS PAYABLE - Summary (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
LOAN PAYABLE
Loan payable	$ 95,000	$ 70,000
Add: Accreted Liability of final payment fee	9,090	6,667
Loan payable, gross	104,090	76,667
Less: unamortized debt issuance costs	(6,390)	(5,532)
Loan payable	97,700	71,135
Total loan payable	97,700	71,135
Loan payable non-current	$ 97,700	$ 71,135