CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Income Statement [Abstract]
Operating Revenues	$ 194,694	$ 191,877	$ 166,274
Operating Expenses:
Operations and Maintenance	91,291	92,363	83,113
Depreciation	27,113	24,430	25,194
Other Taxes	21,914	21,874	18,744
Total Operating Expenses	140,318	138,667	127,051
Operating Income	54,376	53,210	39,223
Other Income:
Allowance for Funds Used During Construction	1,618	1,254	2,433
Other Income, net	5,944	10,815	4,052
Total Other Income, net	7,562	12,069	6,485
Interest Charges	14,295	14,023	13,143
Income before Income Taxes	47,643	51,256	32,565
Income Taxes	4,821	6,905	1,041
Net Income	42,822	44,351	31,524
Preferred Stock Dividend Requirements	76	112	120
Earnings Applicable to Common Stock, Basic	42,746	44,239	31,404
Earnings Applicable to Common Stock, Diluted	$ 42,746	$ 44,239	$ 31,404
Earnings per share of Common Stock:
Basic (in dollars per share)	$ 2.36	$ 2.48	$ 1.77
Diluted (in dollars per share)	$ 2.36	$ 2.47	$ 1.76
Common Shares Outstanding:
Basic (in shares)	18,096	17,842	17,732
Diluted (in shares)	18,137	17,946	17,847