CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 3,478	$ 3,086
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	2,568	2,319
Deferred income taxes, net	(592)	1,237
Stock compensation	47	34
AFUDC, equity portion	(56)	(47)
Changes in assets and liabilities:
Accounts receivable, net of allowance for doubtful accounts	824	1,615
Income taxes receivable	1,702	(73)
Unbilled operating revenues	131	(96)
Materials and supplies	102	(48)
Prepaid property taxes	903	841
Prepaid expenses and other	291	198
Other deferred assets	(255)	(160)
Regulatory assets	91	84
Accounts payable	(4,177)	(1,191)
Accrued expenses	94	1,197
Accrued interest	(673)	250
Customer deposits and other, net	1,389	868
NET CASH PROVIDED BY OPERATING ACTIVITIES	5,867	10,114
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures (net of AFUDC, equity portion)	(9,879)	(7,664)
Proceeds from sale of assets	10	9
NET CASH USED IN INVESTING ACTIVITIES	(9,869)	(7,655)
CASH FLOWS FROM FINANCING ACTIVITIES
Net borrowings (repayments) under lines of credit agreements	4,837	(3,238)
Increase in overdraft payable	356	742
Net advances and contributions in aid of construction	398	2,128
Net proceeds from issuance of common stock	393	414
Dividends paid	(2,168)	(2,084)
Debt issuance costs	(75)	(148)
Principal repayments of long-term debt	(398)	(290)
NET CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	3,343	(2,476)
NET DECREASE IN CASH AND CASH EQUIVALENTS	(659)	(17)
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR	952	226
CASH AND CASH EQUIVALENTS AT END OF PERIOD	293	209
Supplemental Disclosures of Cash Flow Information:
Utility plant received as construction advances and contributions in aid of construction	48	443
Interest paid	2,172	1,307
Income taxes paid	$ 0	$ 515