LEASES - Assets and liabilities related to operating leases recorded on balance sheet (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Assets:
Operating lease right-of-use assets	$ 152	$ 219
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Other Assets, Noncurrent	Other Assets, Noncurrent
Liabilities
Current portion of operating lease liabilities	$ 83	$ 79
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Accrued Liabilities, Current	Accrued Liabilities, Current
Long-term operating lease liabilities	$ 70	$ 141
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Other Liabilities, Noncurrent	Other Liabilities, Noncurrent
Total lease liabilities	$ 153	$ 220