SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, Part 1 (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Utility Plant [Abstract]
AFUDC - Debt	$ 759	$ 435	$ 267
AFUDC - Equity	1,243	894	$ 556
Summary of utility plant comprises [Abstract]
Utility plant, gross	899,454	840,985
Less - accumulated depreciation	185,170	172,954
Utility plant, net	$ 714,284	$ 668,031
Depreciation and Amortization [Abstract]
Depreciation rates of water utility plant	2.13%	2.16%	2.17%
Minimum [Member]
Depreciation and Amortization [Abstract]
Amortization period of other deferred assets	20 years
Maximum [Member]
Depreciation and Amortization [Abstract]
Amortization period of other deferred assets	24 years
Property Held for Future Use [Member]
Summary of utility plant comprises [Abstract]
Estimated useful life	0 years
Utility plant, gross	$ 4,028	$ 4,489
Construction in Progress [Member]
Summary of utility plant comprises [Abstract]
Estimated useful life	0 years
Utility plant, gross	$ 23,724	34,213
Utility plant in service-Water [Member] | Mains [Member]
Summary of utility plant comprises [Abstract]
Estimated useful life	81 years
Utility plant, gross	$ 370,977	338,368
Utility plant in service-Water [Member] | Services [Member]
Summary of utility plant comprises [Abstract]
Estimated useful life	39 years
Utility plant, gross	$ 60,818	56,396
Utility plant in service-Water [Member] | Storage Tanks [Member]
Summary of utility plant comprises [Abstract]
Estimated useful life	76 years
Utility plant, gross	$ 40,933	34,567
Utility plant in service-Water [Member] | Meters [Member]
Summary of utility plant comprises [Abstract]
Estimated useful life	26 years
Utility plant, gross	$ 30,318	29,720
Utility plant in service-Water [Member] | Hydrants [Member]
Summary of utility plant comprises [Abstract]
Estimated useful life	60 years
Utility plant, gross	$ 18,980	17,751
Utility plant in service-Water [Member] | Intangible plant [Member]
Summary of utility plant comprises [Abstract]
Estimated useful life	0 years
Utility plant, gross	$ 140	140
Utility plant in service-Water [Member] | Source of supply plant [Member]
Summary of utility plant comprises [Abstract]
Utility plant, gross	$ 29,960	25,223
Utility plant in service-Water [Member] | Source of supply plant [Member] | Minimum [Member]
Summary of utility plant comprises [Abstract]
Estimated useful life	45 years
Utility plant in service-Water [Member] | Source of supply plant [Member] | Maximum [Member]
Summary of utility plant comprises [Abstract]
Estimated useful life	85 years
Utility plant in service-Water [Member] | Pumping and water treatment plant [Member]
Summary of utility plant comprises [Abstract]
Utility plant, gross	$ 130,337	116,915
Utility plant in service-Water [Member] | Pumping and water treatment plant [Member] | Minimum [Member]
Summary of utility plant comprises [Abstract]
Estimated useful life	8 years
Utility plant in service-Water [Member] | Pumping and water treatment plant [Member] | Maximum [Member]
Summary of utility plant comprises [Abstract]
Estimated useful life	62 years
Utility plant in service-Water [Member] | General plant [Member]
Summary of utility plant comprises [Abstract]
Utility plant, gross	$ 67,317	65,632
Utility plant in service-Water [Member] | General plant [Member] | Minimum [Member]
Summary of utility plant comprises [Abstract]
Estimated useful life	5 years
Utility plant in service-Water [Member] | General plant [Member] | Maximum [Member]
Summary of utility plant comprises [Abstract]
Estimated useful life	31 years
Utility plant in service-Wastewater [Member] | Intangible plant [Member]
Summary of utility plant comprises [Abstract]
Estimated useful life	0 years
Utility plant, gross	$ 116	117
Utility plant in service-Wastewater [Member] | General plant [Member]
Summary of utility plant comprises [Abstract]
Utility plant, gross	$ 2,478	1,845
Utility plant in service-Wastewater [Member] | General plant [Member] | Minimum [Member]
Summary of utility plant comprises [Abstract]
Estimated useful life	5 years
Utility plant in service-Wastewater [Member] | General plant [Member] | Maximum [Member]
Summary of utility plant comprises [Abstract]
Estimated useful life	31 years
Utility plant in service-Wastewater [Member] | Treatment and Disposal Plant [Member]
Summary of utility plant comprises [Abstract]
Utility plant, gross	$ 67,789	66,178
Utility plant in service-Wastewater [Member] | Treatment and Disposal Plant [Member] | Minimum [Member]
Summary of utility plant comprises [Abstract]
Estimated useful life	21 years
Utility plant in service-Wastewater [Member] | Treatment and Disposal Plant [Member] | Maximum [Member]
Summary of utility plant comprises [Abstract]
Estimated useful life	81 years
Utility plant in service-Wastewater [Member] | Collection Mains & Lift Stations [Member]
Summary of utility plant comprises [Abstract]
Estimated useful life	81 years
Utility plant, gross	$ 51,539	$ 49,431