v3.26.1
Interest Rate Swap Agreement (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Interest Rate Swap Agreement [Abstract]      
Outstanding borrowings $ 229,771   $ 224,660
Variable Interest Rate, Type [Extensible Enumeration] yorw:DailySimpleSecuredOvernightFinancingRateMember    
Interest Rate Swap [Member]      
Interest Rate Swap Agreement [Abstract]      
Notional amount of swap $ 12,000    
Fixed interest rate 3.16%    
Percentage of variable interest rate 59.00%    
Basis spread adjustment 0.11448%    
Net payment rate on swap 0.91% 0.52%  
Interest rate swap settlements reclassified from regulatory assets to interest expense $ 28 $ 16  
Overall interest rate swap (gain) loss (47) $ 114  
Interest rate swap settlements to be reclassified during the next 12 months 113    
Potential payment to counterparty 411    
Variable Rate Pennsylvania Economic Development Financing Authority Exempt Facilities Revenue Refunding Bonds, Series 2008A, due 2029 [Member]      
Interest Rate Swap Agreement [Abstract]      
Outstanding borrowings $ 12,000   $ 12,000