LONG-TERM DEBT - Narrative (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Oct. 04, 2011
Long-term debt
Operating lease, liability	$ 13,567	$ 14,903
Cal Water
Long-term debt
Operating lease term				15 years
Operating lease, liability		$ 2,400	$ 3,200