CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 3,590	$ 3,478
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	2,715	2,568
Deferred income taxes, net	(768)	(592)
Stock compensation	47	47
AFUDC, equity portion	(145)	(56)
Changes in assets and liabilities:
Accounts receivable, net of allowance for doubtful accounts	1,184	824
Income tax receivable	763	1,702
Unbilled operating revenues	(69)	131
Materials and supplies	(105)	102
Prepaid property taxes	941	903
Prepaid expenses and other	142	291
Other deferred assets	(361)	(255)
Regulatory assets	95	91
Regulatory liabilities	(94)	0
Accounts payable	(3,324)	(4,177)
Income tax payable	1,292	0
Accrued expenses	525	94
Accrued interest	565	(673)
Revenue reserved for refund	474	748
Customer deposits and other, net	174	641
NET CASH PROVIDED BY OPERATING ACTIVITIES	7,641	5,867
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures (net of AFUDC, equity portion)	(9,098)	(9,879)
Proceeds from sale of assets	14	10
NET CASH USED IN INVESTING ACTIVITIES	(9,084)	(9,869)
CASH FLOWS FROM FINANCING ACTIVITIES
Net borrowings under lines of credit agreements	2,669	4,837
Decrease in overdraft payable	252	356
Net advances and contributions in aid of construction	748	398
Net proceeds from issuance of common stock	395	393
Dividends paid	(2,241)	(2,168)
Debt issuance costs	0	(75)
Principal repayments of long-term debt	(408)	(398)
Principal repayments of long-term debt	1,415	3,343
NET DECREASE IN CASH AND CASH EQUIVALENTS	(28)	(659)
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR	293	952
CASH AND CASH EQUIVALENTS AT END OF PERIOD	265	293
Supplemental Disclosures of Cash Flow Information:
Utility plant received as construction advances and contributions	152	48
Interest paid	1,155	2,172
Income taxes paid	$ 0	$ 0