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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
CASH FLOWS FROM OPERATING ACTIVITIES    
Net income $ 7,404 $ 6,337
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation and amortization 5,109 4,648
Deferred income taxes, net (486) 2,145
Stock compensation 95 327
AFUDC, equity portion (186) (99)
Changes in assets and liabilities:    
Accounts receivable, net of allowance for doubtful accounts (861) 1,000
Income tax receivable 2,092 (65)
Unbilled operating revenues (431) (254)
Materials and supplies 94 (41)
Prepaid property taxes 1,791 1,666
Prepaid expenses and other (478) (501)
Other deferred assets (254) (164)
Regulatory assets 165 180
Regulatory liabilities (50) 0
Accounts payable (3,734) (2,128)
Accrued expenses 442 1,891
Accrued interest (220) (76)
Customer deposits and other, net 2,172 965
NET CASH PROVIDED BY OPERATING ACTIVITIES 12,664 15,831
CASH FLOWS FROM INVESTING ACTIVITIES    
Capital expenditures (net of AFUDC, equity portion) (22,994) (17,140)
Proceeds from sale of assets 30 15
NET CASH USED IN INVESTING ACTIVITIES (22,964) (17,125)
CASH FLOWS FROM FINANCING ACTIVITIES    
Net borrowings (repayments) under lines of credit agreements 9,823 (1,935)
Increase in overdraft payable 169 1,151
Net advances and contributions in aid of construction 4,076 6,008
Net proceeds from issuance of common stock 612 1,057
Dividends paid (4,373) (4,205)
Debt issuance costs (75) (148)
Principal repayments of long-term debt (668) (557)
NET CASH PROVIDED BY FINANCING ACTIVITIES 9,564 1,371
NET (DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS (736) 77
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR 952 226
CASH AND CASH EQUIVALENTS AT END OF PERIOD 216 303
Supplemental Disclosures of Cash Flow Information:    
Utility plant received as construction advances and contributions 185 1,294
Interest paid 3,220 3,157
Income taxes paid $ 1,289 $ 1,278