CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 17,998	$ 16,827	$ 16,817
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	12,620	11,885	11,143
Deferred income taxes, net	2,282	2,803	(1,963)
Stock compensation	152	193	178
AFUDC, equity portion	(894)	(556)	(781)
Changes in assets and liabilities, net of acquisitions:
Accounts receivable, net of allowance for doubtful accounts	(3,779)	94	(2,324)
Income tax receivable	602	(1,605)	(610)
Unbilled operating revenues	(141)	86	45
Materials and supplies	(2,769)	(398)	(271)
Income tax payable	6	(28)	(106)
Prepaid property taxes	697	(415)	63
Prepaid expenses and other	(216)	(444)	42
Other deferred assets	(5,473)	(445)	(409)
Regulatory assets	317	115	390
Regulatory liabilities	6,799	(535)	(635)
Accounts payable	(3,989)	3,547	(1,835)
Accrued expenses	(564)	(71)	301
Accrued interest	72	(13)	100
Revenue reserved for refund	0	0	0
Customer deposits and other	545	270	213
NET CASH PROVIDED BY OPERATING ACTIVITIES	24,265	31,310	20,358
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures (net of AFUDC, equity portion)	(48,483)	(40,814)	(34,277)
Investment in acquisitions, net of cash acquired	(6,341)	0	(5,741)
Proceeds from sale of assets	65	90	46
NET CASH USED IN INVESTING ACTIVITIES	(54,759)	(40,724)	(39,972)
CASH FLOWS FROM FINANCING ACTIVITIES
Net (repayments) borrowings under lines of credit agreements	(6,529)	(110)	19,313
Increase (decrease) in overdraft payable	13	(75)	90
Net advances and contributions in aid of construction	16,431	15,817	9,280
Net proceeds from issuance of common stock	2,090	1,390	1,539
Issuance of long-term debt	31,803	4,126	0
Dividends paid	(10,319)	(9,826)	(9,376)
Debt issuance costs	(135)	(19)	(28)
Principal repayments of long-term debt	(1,643)	(1,825)	(1,772)
NET CASH PROVIDED BY FINANCING ACTIVITIES	31,711	9,478	19,046
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	1,217	64	(568)
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR	92	28	596
CASH AND CASH EQUIVALENTS AT END OF PERIOD	1,309	92	28
Non-cash Investing and Financing Activity:
Utility plant received as construction advances and contributions	8,416	3,538	2,403
Contractual amounts of contributions in aid of construction due from developers included in accounts receivable	726	545	1,705
Contractual amounts of contributions in aid of construction received from developers previously included in accounts receivable	356	1,749	781
Change in amounts included in accounts payable and accrued payables related to capital expenditures	3,182	3,763	3,122
Supplemental Cash Flow Information:
Interest paid	8,430	7,605	7,519
Income taxes paid	3,482	5,181	8,792
Preliminary purchase price of allocation of investment in acquisitions:
Utility plant	33,345	0	5,118
Cash	280	0	0
Goodwill	1,939	0	0
Other assets	1,033	0	623
Total assets	36,597	0	5,741
Less:
Liabilities	2,828	0	0
Future contractual obligation payable to seller	1,569	0	0
Contributions in aid of construction	25,579	0	0
Cash paid for acquisitions	6,621	0	5,741
Cash received from acquisitions	280	0	0
Net cash paid for acquisitions	$ 6,341	$ 0	$ 5,741