CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Operating revenues
Water sales	$ 70,587	$ 68,932	$ 64,667
Other utility operating revenue	3,816	3,694	3,648
Non-utility operating revenue	4,686	4,398	4,150
Total operating revenues	79,089	77,024	72,465
Operating expenses
Utility operating expenses	35,658	36,148	34,893
Non-utility operating expenses	2,602	2,305	2,193
Depreciation and amortization	9,188	8,837	8,673
State and federal income taxes
Current	2,849	2,667	(900)
Deferred	5,482	5,117	7,275
Property and other taxes	4,491	4,368	4,285
Total operating expenses	60,270	59,442	56,419
Operating income	18,819	17,582	16,046
Other income, net
Allowance for funds used during construction (AFUDC)	222	249	329
Miscellaneous	557	472	524
Total other income	779	721	853
Income before interest charges	19,598	18,303	16,899
Interest charges	6,644	6,998	7,393
Net income applicable to common stock	$ 12,954	$ 11,305	$ 9,506
Income per common share:
Basic (in dollars per share)	$ 1.42	$ 1.26	$ 1.07
Diluted (in dollars per share)	$ 1.41	$ 1.26	$ 1.07
Weighted average common shares outstanding:
Basic (in shares)	9,098	8,960	8,884
Diluted (in shares)	9,161	9,005	8,926
Cash dividends paid per share of common stock (in dollars per share)	$ 0.8997	$ 0.8733	$ 0.8477