CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 20,394	$ 16,699	$ 17,998
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	13,629	13,335	12,620
Amortization of debt expense	353	355	354
Amortization of deferred income tax regulatory liability	(916)	(444)	0
Provision for expected credit loss	233	92	68
Deferred income taxes, net	1,480	3,813	2,282
Stock compensation expense	219	254	152
AFUDC, equity portion	(1,135)	(1,243)	(894)
Changes in assets and liabilities:
Accounts and other receivables	(257)	807	(3,847)
Income tax receivable	1,175	(167)	602
Unbilled operating revenues	73	(348)	(141)
Materials and supplies	1,705	(1,281)	(2,769)
Income tax payable	498	(4)	6
Prepaid property taxes	81	(83)	697
Prepaid expenses and other	206	(419)	(216)
Other deferred assets	1,945	1,998	(5,473)
Regulatory assets	(206)	(497)	(37)
Regulatory liabilities	(2,800)	(2,724)	6,799
Accounts payable	305	284	(3,989)
Accrued expenses	552	614	(564)
Accrued interest	(1,345)	1,286	72
Customer deposits and other, net	634	(476)	545
NET CASH PROVIDED BY OPERATING ACTIVITIES	36,823	31,851	24,265
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures (net of AFUDC, equity portion)	(45,942)	(62,177)	(48,483)
Investment in acquisitions, net of cash acquired	0	0	(6,341)
Proceeds from sale of assets	623	99	65
NET CASH USED IN INVESTING ACTIVITIES	(45,319)	(62,078)	(54,759)
CASH FLOWS FROM FINANCING ACTIVITIES
Repayments under lines of credit agreements	0	(23,477)	(41,038)
Borrowings under lines of credit agreements	0	3,303	34,509
Increase (decrease) in overdraft payable	22	(34)	13
Proceeds from contributions in aid of construction and advances	23,983	24,747	17,494
Payouts for contributions in aid of construction and advances	(3,547)	(2,228)	(1,063)
Net proceeds from issuance of common stock	347	37,073	2,090
Equity issuance costs	0	(317)	0
Issuance of long-term debt	758	5,608	31,803
Dividends paid	(12,168)	(11,242)	(10,319)
Debt issuance costs	0	0	(135)
Principal repayments of long-term debt	(2,257)	(2,010)	(1,643)
NET CASH PROVIDED BY FINANCING ACTIVITIES	7,138	31,423	31,711
NET (DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS	(1,358)	1,196	1,217
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	2,505	1,309	92
CASH AND CASH EQUIVALENTS AT END OF PERIOD	1,147	2,505	1,309
Non-cash Investing and Financing Activity:
Utility plant received as construction advances and contributions	8,718	3,492	8,416
Contractual amounts of contributions in aid of construction due from developers included in accounts receivable	641	1,695	726
Contractual amounts of contributions in aid of construction received from developers previously included in accounts receivable	1,790	799	356
Change in amounts included in accounts payable and accrued payables related to capital expenditures	2,577	(3,384)	3,182
Supplemental Disclosures of Cash Flow Information:
Interest paid	9,771	7,515	8,430
Income taxes paid	5,732	3,590	3,482
Income taxes refunded	$ 701	$ 0	$ 0