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Business Segment Data (Details) - Schedule of segment reporting information, by segment - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Dec. 31, 2022
Revenues:      
Consolidated Revenues $ 38,156 $ 36,196  
Operating Income:      
Consolidated Operating Income 7,490 12,523  
Net Income:      
Consolidated Net Income 5,868 12,100  
Capital Expenditures:      
Total Capital Expenditures 24,515 16,631  
Assets:      
Consolidated Assets 1,098,915 1,074,450 $ 1,074,450
Regulated [Member]      
Revenues:      
Consolidated Revenues 34,953 33,325  
Operating Income:      
Consolidated Operating Income 6,715 11,705  
Net Income:      
Consolidated Net Income 5,324 11,513  
Capital Expenditures:      
Total Capital Expenditures 24,465 16,585  
Assets:      
Consolidated Assets 1,106,949 1,079,180  
Non - Regulated [Member]      
Revenues:      
Consolidated Revenues 3,342 3,009  
Operating Income:      
Consolidated Operating Income 775 818  
Net Income:      
Consolidated Net Income 544 587  
Capital Expenditures:      
Total Capital Expenditures 50 46  
Assets:      
Consolidated Assets 7,490 6,999  
Inter segment Elimination [Member]      
Revenues:      
Consolidated Revenues (139) (138)  
Assets:      
Consolidated Assets $ (15,524) $ (11,729)