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Rate Matters (Details) - PPUC [Member] - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Rate Request Filed on May 27, 2022 [Member] | Water [Member]        
Rate Matters [Abstract]        
Requested annual increase in rates     $ 18,854  
Authorized dollar increase in annual revenues     11,600  
Rate Request Filed on May 27, 2022 [Member] | Wastewater [Member]        
Rate Matters [Abstract]        
Requested annual increase in rates     1,457  
Authorized dollar increase in annual revenues     1,900  
DSIC [Member]        
Rate Matters [Abstract]        
Distribution system improvement charge revenue $ 0 $ 661 $ 271 $ 1,623
DSIC [Member] | Maximum [Member]        
Rate Matters [Abstract]        
Distribution system improvement charge percentage over base rate     5.00%  
DSIC [Member] | Minimum [Member]        
Rate Matters [Abstract]        
Distribution system improvement charge percentage over base rate     0.00%