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LEASES - Assets and liabilities related to operating leases recorded on balance sheet (Details) - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Assets:    
Operating lease right-of-use assets $ 239 $ 72
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] Other Assets. Other Assets.
Liabilities:    
Current portion of operating lease liabilities $ 57 $ 54
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration] Accrued Expenses and Other Current Liabilities Accrued Expenses and Other Current Liabilities
Long-term operating lease liabilities $ 180 $ 17
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration] Other Liabilities, Noncurrent Other Liabilities, Noncurrent
Total lease liabilities $ 237 $ 71