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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
CASH FLOWS FROM OPERATING ACTIVITIES    
Net income $ 1,640 $ 2,505
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation and amortization 2,041 1,960
Deferred income taxes, net 303 750
Stock compensation 24 29
AFUDC, equity portion (44) (22)
Changes in assets and liabilities:    
Accounts receivable, net of allowance for doubtful accounts (124) 1,861
Unbilled operating revenues (201) (474)
Materials and supplies (151) 49
Prepaid property taxes 627 642
Prepaid expenses and other 5 237
Other deferred assets (149) (240)
Regulatory assets 72 67
Accounts payable 700 (120)
Accrued expenses 323 360
Accrued interest 124 180
Customer deposits and other, net (439) (202)
Postretirement benefit obligation 0 0
NET CASH PROVIDED BY OPERATING ACTIVITIES 4,751 7,582
CASH FLOWS USED IN INVESTING ACTIVITIES    
Capital expenditures (net of AFUDC, equity portion) (4,087) (3,597)
Proceeds from sale of assets 6 11
NET CASH USED IN INVESTING ACTIVITIES (4,081) (3,586)
CASH FLOWS FROM FINANCING ACTIVITIES    
Net repayments under lines of credit agreements (630) (2,662)
(Decrease) increase in overdraft payable (259) 154
Net advances and contributions in aid of construction 1,318 72
Change in deferred debt issuance costs 11 29
Net proceeds from issuance of common stock 587 506
Dividends paid (1,766) (1,663)
Issuance of long-term debt 855 0
Principal repayments of long-term debt (1,082) (290)
NET CASH USED IN FINANCING ACTIVITIES (966) (3,854)
NET (DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS (296) 142
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR 617 311
CASH AND CASH EQUIVALENTS AT END OF PERIOD 321 453
Supplemental Disclosures of Cash Flow Information:    
Utility plant received as construction advances and contributions 110 12
Interest paid 1,623 1,592
Income taxes paid $ 914 $ 0