CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Operating revenues
Total Tariff Revenue	$ 19,901	$ 19,386
Operating expenses
Utility operating expenses	9,235	9,121
Non-utility operating expenses	728	767
Depreciation and amortization	2,752	2,715
State and federal income taxes	1,359	1,180
Property and other taxes	1,365	1,319
Total Operating Expenses	15,439	15,102
Operating income	4,462	4,284
Other income, net
Allowance for funds used during construction (AFUDC)	423	226
Miscellaneous income	1,088	800
Income before interest charges	5,973	5,310
Interest charges	1,899	1,720
Net income applicable to common stock	$ 4,074	$ 3,590
Income per common share:
Basic (in dollars per share)	$ 0.44	$ 0.39
Diluted (in dollars per share)	$ 0.44	$ 0.39
Weighted average common shares outstanding:
Basic (in shares)	9,297	9,258
Diluted (in shares)	9,343	9,314
Cash dividends per share of common stock (in dollars per share)	$ 0.2496	$ 0.2423
Water Sales [Member]
Operating revenues
Total Tariff Revenue	$ 17,392	$ 16,934
Other Utility Operating Revenue [Member]
Operating revenues
Total Tariff Revenue	1,253	1,120
Non-Utility Operating Revenue [Member]
Operating revenues
Total Tariff Revenue	$ 1,256	$ 1,332