INVESTMENTS - Marketable Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
INVESTMENTS
Amortized Cost, Current	$ 215	$ 1,385
Amortized Cost, Due from one through five years	3,518	3,977
Amortized Cost, Due from six through ten years	2,836	2,347
Amortized Cost, Due from eleven through twenty years		799
Amortized Cost, Total	6,569	8,508
Market Value, Current	215	1,381
Market Value, Due from one through five years	3,592	3,950
Market Value, Due from six through ten years	2,830	2,455
Market Value, Due from eleven through twenty years		773
Market Value, Total	$ 6,637	$ 8,559