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Commitments (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2023
USD ($)
ServiceLine
Dec. 31, 2022
USD ($)
Commitments [Abstract]    
Capital expenditures committed $ 39,548  
Commitments [Abstract]    
Percentage of employees under union contract 32.00%  
Armor and Replace Spillway of Lake Williams Dam [Member]    
Commitments [Abstract]    
Remaining committed capital expenditures to be incurred $ 2,945  
Customer-Owned Lead Service Lines [Member]    
Commitments [Abstract]    
Number of lead customer-owned service lines to be replaced annually | ServiceLine 400  
Term of tariff modification to replace customer-owned lead service lines 9 years  
Recovery period of regulatory asset 4 years  
Costs incurred to replace customer-owned lead service lines $ 1,762 $ 1,518
Costs to be incurred to replace customer-owned lead service lines 1,900  
Construction and Acquisition Expenditures [Member]    
Capital Commitments [Abstract]    
Commitments for 2024 42,200  
Commitments for 2025 $ 46,100