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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, Part 1 (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Utility Plant [Abstract]      
AFUDC - Debt $ 509 $ 759 $ 435
AFUDC - Equity 1,135 1,243 $ 894
Summary of utility plant comprises [Abstract]      
Utility plant, gross 939,439 899,454  
Less - accumulated depreciation 192,253 185,170  
Utility plant, net $ 747,186 $ 714,284  
Depreciation and Amortization [Abstract]      
Depreciation rates of water utility plant 1.93% 2.13% 2.16%
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]      
Utility plant, gross $ 3,742 $ 4,028  
Construction in Progress [Member]      
Summary of utility plant comprises [Abstract]      
Utility plant, gross 39,718 $ 23,724  
Utility plant in service-Water [Member] | Mains [Member]      
Summary of utility plant comprises [Abstract]      
Estimated useful life   81 years  
Utility plant, gross $ 390,741 $ 370,977  
Utility plant in service-Water [Member] | Mains [Member] | Minimum [Member]      
Summary of utility plant comprises [Abstract]      
Estimated useful life 73 years    
Utility plant in service-Water [Member] | Mains [Member] | Maximum [Member]      
Summary of utility plant comprises [Abstract]      
Estimated useful life 81 years    
Utility plant in service-Water [Member] | Services [Member]      
Summary of utility plant comprises [Abstract]      
Estimated useful life   39 years  
Utility plant, gross $ 63,613 $ 60,818  
Utility plant in service-Water [Member] | Services [Member] | Minimum [Member]      
Summary of utility plant comprises [Abstract]      
Estimated useful life 39 years    
Utility plant in service-Water [Member] | Services [Member] | Maximum [Member]      
Summary of utility plant comprises [Abstract]      
Estimated useful life 58 years    
Utility plant in service-Water [Member] | Storage Tanks [Member]      
Summary of utility plant comprises [Abstract]      
Estimated useful life   76 years  
Utility plant, gross $ 39,760 $ 40,933  
Utility plant in service-Water [Member] | Storage Tanks [Member] | Minimum [Member]      
Summary of utility plant comprises [Abstract]      
Estimated useful life 70 years    
Utility plant in service-Water [Member] | Storage Tanks [Member] | Maximum [Member]      
Summary of utility plant comprises [Abstract]      
Estimated useful life 76 years    
Utility plant in service-Water [Member] | Meters [Member]      
Summary of utility plant comprises [Abstract]      
Estimated useful life   26 years  
Utility plant, gross $ 30,223 $ 30,318  
Utility plant in service-Water [Member] | Meters [Member] | Minimum [Member]      
Summary of utility plant comprises [Abstract]      
Estimated useful life 16 years    
Utility plant in service-Water [Member] | Meters [Member] | Maximum [Member]      
Summary of utility plant comprises [Abstract]      
Estimated useful life 26 years    
Utility plant in service-Water [Member] | Hydrants [Member]      
Summary of utility plant comprises [Abstract]      
Estimated useful life   60 years  
Utility plant, gross $ 20,158 $ 18,980  
Utility plant in service-Water [Member] | Hydrants [Member] | Minimum [Member]      
Summary of utility plant comprises [Abstract]      
Estimated useful life 60 years    
Utility plant in service-Water [Member] | Hydrants [Member] | Maximum [Member]      
Summary of utility plant comprises [Abstract]      
Estimated useful life 68 years    
Utility plant in service-Water [Member] | Intangible plant [Member]      
Summary of utility plant comprises [Abstract]      
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 $ 30,320 $ 29,960  
Utility plant in service-Water [Member] | Source of supply plant [Member] | Minimum [Member]      
Summary of utility plant comprises [Abstract]      
Estimated useful life 45 years 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 85 years  
Utility plant in service-Water [Member] | Pumping and water treatment plant [Member]      
Summary of utility plant comprises [Abstract]      
Utility plant, gross $ 130,226 $ 130,337  
Utility plant in service-Water [Member] | Pumping and water treatment plant [Member] | Minimum [Member]      
Summary of utility plant comprises [Abstract]      
Estimated useful life 15 years 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 64 years 62 years  
Utility plant in service-Water [Member] | General plant [Member]      
Summary of utility plant comprises [Abstract]      
Utility plant, gross $ 59,634 $ 67,317  
Utility plant in service-Water [Member] | General plant [Member] | Minimum [Member]      
Summary of utility plant comprises [Abstract]      
Estimated useful life 5 years 5 years  
Utility plant in service-Water [Member] | General plant [Member] | Maximum [Member]      
Summary of utility plant comprises [Abstract]      
Estimated useful life 81 years 31 years  
Utility plant in service-Wastewater [Member] | Intangible plant [Member]      
Summary of utility plant comprises [Abstract]      
Utility plant, gross $ 116 $ 116  
Utility plant in service-Wastewater [Member] | General plant [Member]      
Summary of utility plant comprises [Abstract]      
Utility plant, gross $ 2,632 $ 2,478  
Utility plant in service-Wastewater [Member] | General plant [Member] | Minimum [Member]      
Summary of utility plant comprises [Abstract]      
Estimated useful life 5 years 5 years  
Utility plant in service-Wastewater [Member] | General plant [Member] | Maximum [Member]      
Summary of utility plant comprises [Abstract]      
Estimated useful life 31 years 31 years  
Utility plant in service-Wastewater [Member] | Treatment and Disposal Plant [Member]      
Summary of utility plant comprises [Abstract]      
Utility plant, gross $ 71,332 $ 67,789  
Utility plant in service-Wastewater [Member] | Treatment and Disposal Plant [Member] | Minimum [Member]      
Summary of utility plant comprises [Abstract]      
Estimated useful life 20 years 20 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 81 years  
Utility plant in service-Wastewater [Member] | Collection Mains & Lift Stations [Member]      
Summary of utility plant comprises [Abstract]      
Utility plant, gross $ 57,084 $ 51,539  
Utility plant in service-Wastewater [Member] | Collection Mains & Lift Stations [Member] | Minimum [Member]      
Summary of utility plant comprises [Abstract]      
Estimated useful life 70 years 70 years  
Utility plant in service-Wastewater [Member] | Collection Mains & Lift Stations [Member] | Maximum [Member]      
Summary of utility plant comprises [Abstract]      
Estimated useful life 81 years 81 years