Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 14,402	$ 13,376
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	7,688	7,010
Stock-based compensation	166	80
Increase in deferred income taxes	641	58
Other	251	295
Changes in assets and liabilities:
(Increase) decrease in accounts receivable and unbilled revenues	282	(483)
Increase in recoverable income taxes	(547)	0
Increase in materials and supplies, prepaid expenses, regulatory and other assets	(5,903)	(6,094)
Increase in accounts payable, accrued compensation and benefits, accrued expenses, deferred employee benefits, regulatory liabilities, and other deferred credits	2,129	4,508
Decrease in accrued interest and taxes	(228)	(378)
Net cash provided by operating activities	18,881	18,372
CASH FLOWS FROM INVESTING ACTIVITIES:
Utility plant additions, including debt portion of allowance for funds used during construction of $205 in 2019, and $128 in 2018	(18,425)	(16,882)
Acquisition of wastewater system	(2,112)	0
Cash received from surrender of life insurance policies	0	108
Net cash used in investing activities	(20,537)	(16,774)
CASH FLOWS FROM FINANCING ACTIVITIES:
Customers' advances for construction and contributions in aid of construction	1,695	1,998
Repayments of customer advances	(396)	(409)
Proceeds of long-term debt issues	94,043	28,762
Debt issuance costs	(613)	0
Repayments of long-term debt	(85,906)	(25,691)
Repayments under short-term line of credit agreements	(1,000)	0
Changes in cash overdraft position	314	301
Issuance of common stock	2,505	2,024
Dividends paid	(8,986)	(8,583)
Net cash provided by (used in) financing activities	1,656	(1,598)
Net change in cash and cash equivalents	0	0
Cash and cash equivalents at beginning of period	2	2
Cash and cash equivalents at end of period	2	2
Cash paid during the period for:
Interest, net of amounts capitalized	4,821	5,236
Income taxes	$ 2,230	$ 2,901
Supplemental schedule of non-cash investing and financing activities:
Accounts payable includes $1,029 in 2019 and $1,100 in 2018 for the construction of utility plant.