SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, Part 1 (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Summary of utility plant comprises [Abstract]
Utility plant, gross	$ 840,985	$ 749,816
Less - accumulated depreciation	172,954	159,385
Utility plant, net	$ 668,031	$ 590,431
Depreciation and Amortization [Abstract]
Depreciation rates of water utility plant	2.16%	2.17%	2.23%
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	$ 4,489	$ 5,536
Construction in Progress [Member]
Summary of utility plant comprises [Abstract]
Estimated useful life	0 years
Utility plant, gross	$ 34,213	18,481
Utility plant in service-Water [Member] | Mains [Member]
Summary of utility plant comprises [Abstract]
Estimated useful life	81 years
Utility plant, gross	$ 338,368	320,767
Utility plant in service-Water [Member] | Services [Member]
Summary of utility plant comprises [Abstract]
Estimated useful life	39 years
Utility plant, gross	$ 56,396	53,210
Utility plant in service-Water [Member] | Storage Tanks [Member]
Summary of utility plant comprises [Abstract]
Estimated useful life	76 years
Utility plant, gross	$ 34,567	29,972
Utility plant in service-Water [Member] | Meters [Member]
Summary of utility plant comprises [Abstract]
Estimated useful life	26 years
Utility plant, gross	$ 29,720	28,778
Utility plant in service-Water [Member] | Hydrants [Member]
Summary of utility plant comprises [Abstract]
Estimated useful life	60 years
Utility plant, gross	$ 17,751	16,789
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	$ 25,223	25,045
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	$ 116,915	109,087
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	$ 65,632	62,604
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	$ 117	116
Utility plant in service-Wastewater [Member] | General plant [Member]
Summary of utility plant comprises [Abstract]
Utility plant, gross	$ 1,845	1,665
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	$ 66,420	43,725
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	$ 49,189	$ 33,901
Artesian Water [Member]
Utility Plant [Abstract]
Capitalized rate of AFUDC	6.90%	6.70%	7.00%
Artesian Wastewater [Member]
Utility Plant [Abstract]
Capitalized rate of AFUDC	6.90%	6.40%	6.30%
Tidewater Environmental Services Inc [Member]
Utility Plant [Abstract]
Capitalized rate of AFUDC	5.70%