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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
CASH FLOWS FROM OPERATING ACTIVITIES      
Net income $ 11,305 $ 9,506 $ 8,301
Adjustments to reconcile net income to net cash provided by operating activities:      
Depreciation and amortization 8,837 8,673 8,251
Deferred income taxes, net 5,097 7,255 3,843
Stock compensation 183 135 123
AFUDC, equity portion (163) (212) (208)
Changes in assets and liabilities:      
Accounts receivable, net of allowance for doubtful accounts (867) 147 457
Income taxes receivable 1,640 (2,613) (334)
Unbilled operating revenues 1,779 (305) (12)
Materials and supplies 177 (405) (132)
Prepaid property taxes (190) 90 (163)
Prepaid expenses and other 49 (390) 59
Other deferred assets (167) (172) (139)
Regulatory assets 65 (307) 50
Accounts payable 1,131 (357) 641
Accrued expenses (259) (2,197) 280
Accrued interest (396) 374 (11)
Customer deposits and other, net 102 (832) 81
Postretirement benefit obligation (38) (41) (65)
NET CASH PROVIDED BY OPERATING ACTIVITIES 28,285 18,349 21,022
CASH FLOWS USED IN INVESTING ACTIVITIES      
Capital expenditures (net of AFUDC, equity portion) (20,694) (23,730) (21,188)
Proceeds from sale of assets 48 35 33
NET CASH USED IN INVESTING ACTIVITIES (20,646) (23,695) (21,155)
CASH FLOWS FROM FINANCING ACTIVITIES      
Net (repayments) borrowings under lines of credit agreements (8,004) 8,159 (385)
Increase (decrease) in overdraft payable 405 (605) (4)
Net advances and contributions in aid of construction 5,829 3,808 5,701
Change in deferred debt issuance costs 122 120 120
Net proceeds from issuance of common stock 3,049 1,651 2,439
Dividends paid (7,811) (7,523) (7,207)
Issuance of long-term debt 0 689 385
Principal repayments of long-term debt (1,263) (1,132) (1,111)
NET CASH (USED IN) PROVIDED BY FINANCING ACTIVITIES (7,673) 5,167 (62)
NET (DECREASE) IN CASH AND CASH EQUIVALENTS (34) (179) (195)
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR 243 422 617
CASH AND CASH EQUIVALENTS AT END OF YEAR 209 243 422
Supplemental Disclosures of Cash Flow Information:      
Utility plant received as construction advances and contributions 1,451 1,491 948
Contractual amounts of contributions in aid of construction due from developers included in accounts receivable 796 456 349
Contractual amounts of contributions in aid of construction received from developers previously included in accounts receivable 377 361 505
Supplemental Disclosures of Cash Flow Information:      
Interest paid 7,394 7,019 7,066
Income taxes paid $ 2,608 $ 1,615 $ 2,014