Business Segment Data (Details) - Schedule of segment reporting information, by segment - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Consolidated Revenues	$ 162,434	$ 143,141	$ 141,592
Consolidated Operating Income	47,333	33,211	37,420
Consolidated Depreciation	23,029	21,109	18,472
Consolidated Other Income (Expense), Net	7,703	5,958	4,379
Consolidated Interest Charges	9,367	8,114	7,493
Consolidated Income Taxes	3,240	(5,488)	(4,119)
Consolidated Net Income	42,429	36,543	38,425
Total Capital Expenditures	91,335	79,378	105,619
Consolidated Assets	1,074,450	1,020,015
Regulated [Member]
Segment Reporting Information [Line Items]
Consolidated Revenues	151,117	131,531	129,851
Consolidated Operating Income	44,257	29,577	34,043
Consolidated Depreciation	22,783	20,897	18,264
Consolidated Other Income (Expense), Net	7,898	6,112	4,605
Consolidated Interest Charges	9,833	8,529	7,780
Consolidated Income Taxes	2,084	(6,723)	(5,139)
Consolidated Net Income	40,229	33,849	35,951
Total Capital Expenditures	91,054	79,195	105,091
Consolidated Assets	1,079,180	1,022,116
Non - Regulated [Member]
Segment Reporting Information [Line Items]
Consolidated Revenues	12,446	12,818	12,545
Consolidated Operating Income	3,076	3,634	3,377
Consolidated Depreciation	246	212	208
Consolidated Other Income (Expense), Net	279	279	130
Consolidated Interest Charges	7	17	70
Consolidated Income Taxes	1,156	1,235	1,020
Consolidated Net Income	2,200	2,694	2,474
Total Capital Expenditures	281	183	528
Consolidated Assets	6,999	7,811
Inter segment Elimination [Member]
Segment Reporting Information [Line Items]
Consolidated Revenues	(1,129)	(1,208)	(804)
Consolidated Other Income (Expense), Net	(474)	(433)	(356)
Consolidated Interest Charges	(473)	(432)	$ (357)
Consolidated Assets	$ (11,729)	$ (9,912)