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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
CASH FLOWS FROM OPERATING ACTIVITIES    
Net income $ 10,279 $ 10,228
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation and amortization 7,024 6,835
Deferred income taxes, net 6,211 3,464
Stock compensation 375 57
AFUDC, equity portion (155) (105)
Changes in assets and liabilities:    
Accounts receivable, net of allowance for doubtful accounts 551 (1,499)
Income taxes receivable (1,096) 1,386
Unbilled operating revenues (234) (85)
Materials and supplies 119 (345)
Prepaid property taxes (799) (707)
Prepaid expenses and other (275) (150)
Other deferred assets (132) (157)
Regulatory assets 275 489
Accounts payable 229 (512)
Accrued expenses 2,222 1,316
Accrued interest 347 132
Customer deposits and other, net 651 1,579
NET CASH PROVIDED BY OPERATING ACTIVITIES 25,592 21,926
CASH FLOWS FROM INVESTING ACTIVITIES    
Capital expenditures (net of AFUDC, equity portion) (28,284) (20,004)
Proceeds from sale of assets 71 60
NET CASH USED IN INVESTING ACTIVITIES (28,213) (19,944)
CASH FLOWS FROM FINANCING ACTIVITIES    
Net repayments under lines of credit agreements (830) (6,479)
Increase in overdraft payable 1,261 350
Net advances and contributions in aid of construction 8,404 9,865
Net proceeds from issuance of common stock 1,240 1,441
Dividends paid (6,333) (6,099)
Debt issuance costs (148) 0
Principal repayments of long-term debt (949) (1,025)
NET CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES 2,645 (1,947)
NET INCREASE IN CASH AND CASH EQUIVALENTS 24 35
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR 226 209
CASH AND CASH EQUIVALENTS AT END OF PERIOD 250 244
Supplemental Disclosures of Cash Flow Information:    
Utility plant received as construction advances and contributions 2,628 2,338
Interest paid 4,267 4,864
Income taxes paid $ 1,278 $ 281