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Revenue (Details)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2022
USD ($)
Jun. 30, 2021
USD ($)
Jun. 30, 2022
USD ($)
Municipality
Jun. 30, 2021
USD ($)
Revenue [Abstract]        
Revenue from contracts with customers $ 14,770 $ 13,661 $ 28,882 $ 26,601
Rents from regulated property 129 140 257 281
Total operating revenue 14,899 13,801 $ 29,139 26,882
Utility Service [Member]        
Revenue [Abstract]        
Number of days for customer to make payment after being invoiced     20 days  
Water Utility Service [Member] | Residential [Member]        
Revenue [Abstract]        
Revenue from contracts with customers 8,819 8,543 $ 17,266 16,688
Water Utility Service [Member] | Commercial and Industrial [Member]        
Revenue [Abstract]        
Revenue from contracts with customers 3,896 3,629 7,484 6,939
Water Utility Service [Member] | Fire Protection [Member]        
Revenue [Abstract]        
Revenue from contracts with customers 836 795 1,672 1,601
Wastewater Utility Service [Member] | Residential [Member]        
Revenue [Abstract]        
Revenue from contracts with customers 925 474 1,854 945
Wastewater Utility Service [Member] | Commercial and Industrial [Member]        
Revenue [Abstract]        
Revenue from contracts with customers 116 79 225 158
Billing and Revenue Collection Services [Member]        
Revenue [Abstract]        
Revenue from contracts with customers 84 120 $ 214 239
Number of municipalities within the service territory provided service | Municipality     2  
Number of days for customer to make payment after being invoiced     30 days  
Collection Services [Member]        
Revenue [Abstract]        
Revenue from contracts with customers 89 11 $ 148 11
Number of days for customer to make payment after being invoiced     30 days  
Other Revenue [Member]        
Revenue [Abstract]        
Revenue from contracts with customers $ 5 $ 10 $ 19 $ 20