CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Operating revenues
Total Operating Revenues	$ 25,011	$ 22,469	$ 47,198	$ 43,113
Operating expenses
Utility operating expenses	10,070	9,661	20,566	19,166
Non-utility operating expenses	1,905	862	2,847	1,777
Depreciation and amortization	3,055	2,976	6,140	5,988
State and federal income taxes	1,725	1,542	3,144	2,893
Property and other taxes	1,413	1,341	2,914	2,761
Total Operating Expenses	18,168	16,382	35,611	32,585
Operating income	6,843	6,087	11,587	10,528
Other income, net
Allowance for funds used during construction (AFUDC)	324	371	505	615
Miscellaneous (expense) income	(33)	(59)	1,412	1,343
Income before interest charges	7,134	6,399	13,504	12,486
Interest charges	2,088	1,894	3,975	3,775
Net income applicable to common stock	$ 5,046	$ 4,505	$ 9,529	$ 8,711
Income per common share:
Basic (in dollars per share)	$ 0.53	$ 0.48	$ 1.01	$ 0.93
Diluted (in dollars per share)	$ 0.53	$ 0.48	$ 1.01	$ 0.93
Weighted average common shares outstanding:
Basic (in shares)	9,452	9,395	9,438	9,381
Diluted (in shares)	9,470	9,425	9,464	9,416
Cash dividends per share of common stock (in dollars per share)	$ 0.2729	$ 0.2610	$ 0.5404	$ 0.5181
Water Sales [Member]
Operating revenues
Total Operating Revenues	$ 19,722	$ 20,078	$ 37,865	$ 37,908
Other Utility Operating Revenue [Member]
Operating revenues
Total Operating Revenues	2,914	1,014	5,440	2,390
Non-Utility Operating Revenue [Member]
Operating revenues
Total Operating Revenues	$ 2,375	$ 1,377	$ 3,893	$ 2,815