CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Income Statement [Abstract]
Operating Revenues	$ 48,714	$ 44,301
Operating Expenses:
Operations and Maintenance	23,012	21,109
Depreciation	7,036	6,527
Other Taxes	5,564	5,108
Total Operating Expenses	35,612	32,744
Operating Income	13,102	11,557
Other Income:
Allowance for Funds Used During Construction	633	372
Other Income, net	1,369	1,425
Total Other Income, net	2,002	1,797
Interest Charges	3,214	2,713
Income before Income Taxes	11,890	10,641
Income Taxes	1,285	1,162
Net Income	10,605	9,479
Preferred Stock Dividend Requirements	18	22
Earnings Applicable to Common Stock, Basic	10,587	9,457
Earnings Applicable to Common Stock, Diluted	$ 10,587	$ 9,457
Earnings per share of Common Stock:
Basic (in dollars per share)	$ 0.57	$ 0.53
Diluted (in dollars per share)	$ 0.57	$ 0.53
Common Shares Outstanding:
Basic (in shares)	18,545	17,890
Diluted (in shares)	18,575	17,951