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Business Segment Data (Details) - Schedule of segment reporting information, by segment - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Dec. 31, 2022
Revenues:          
Consolidated Revenues $ 42,801 $ 39,683 $ 80,957 $ 75,879  
Operating Income:          
Consolidated Operating Income 10,669 10,088 18,157 22,612  
Net Income:          
Consolidated Net Income 9,901 8,868 15,767 20,968  
Capital Expenditures:          
Total Capital Expenditures 26,120 22,712 50,635 39,343  
Assets:          
Consolidated Assets 1,127,586   1,127,586   $ 1,074,450
Regulated [Member]          
Revenues:          
Consolidated Revenues 39,909 37,037 74,862 70,361  
Operating Income:          
Consolidated Operating Income 9,820 9,336 16,535 21,043  
Net Income:          
Consolidated Net Income 9,307 8,314 14,631 19,814  
Capital Expenditures:          
Total Capital Expenditures 26,114 22,549 50,579 39,134  
Assets:          
Consolidated Assets 1,126,436   1,126,436   1,079,180
Non - Regulated [Member]          
Revenues:          
Consolidated Revenues 3,056 2,875 6,398 5,885  
Operating Income:          
Consolidated Operating Income 849 752 1,622 1,569  
Net Income:          
Consolidated Net Income 594 554 1,136 1,154  
Capital Expenditures:          
Total Capital Expenditures 6 163 56 209  
Assets:          
Consolidated Assets 7,677   7,677   6,999
Inter segment Elimination [Member]          
Revenues:          
Consolidated Revenues (164) $ (229) (303) $ (367)  
Assets:          
Consolidated Assets $ (6,527)   $ (6,527)   $ (11,729)