ACCOUNTING FOR LEASES - Lease costs (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
ACCOUNTING FOR LEASES
Short-term lease costs	$ 297	$ 287	$ 382
Long-term lease costs	1,546	1,405	1,432
Total lease costs	$ 1,843	$ 1,692	$ 1,814