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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)
In Thousands, unless otherwise specified
 9 Months Ended
Sep. 30, 2013
Sep. 30, 2012
CASH FLOWS FROM OPERATING ACTIVITIES    
Net income $ 6,754 $ 8,099
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation and amortization 6,164 5,880
Deferred income taxes, net 2,398 2,898
Stock compensation 89 83
AFUDC, equity portion (158) (161)
Changes in assets and liabilities:    
Accounts receivable, net of allowance for doubtful accounts (144) (599)
Unbilled operating revenues 20 739
Materials and supplies (251) 154
Prepaid property taxes (724) (703)
Prepaid expenses and other (126) 122
Other deferred assets (133) (257)
Regulatory assets 25 195
Accounts payable 194 701
Accrued expenses 1,230 1,056
Accrued interest 113 59
Customer deposits and other, net (393) 7
Postretirement benefit obligation 0 0
NET CASH PROVIDED BY OPERATING ACTIVITIES 15,058 18,273
CASH FLOWS USED IN INVESTING ACTIVITIES    
Capital expenditures (net of AFUDC, equity portion) (13,936) (14,787)
Proceeds from sale of assets 14 25
NET CASH USED IN INVESTING ACTIVITIES (13,922) (14,762)
CASH FLOWS FROM FINANCING ACTIVITIES    
Net repayments under lines of credit agreements (1,043) (1,191)
(Decrease) increase in overdraft payable (670) 423
Net advances and contributions in aid of construction 4,663 2,376
Change in deferred debt issuance costs 90 90
Net proceeds from issuance of common stock 1,681 1,496
Dividends paid (5,372) (5,086)
Issuance of long-term debt 385 0
Principal repayments of long-term debt (910) (1,418)
NET CASH USED IN FINANCING ACTIVITIES (1,176) (3,310)
NET (DECREASE) INCREASE IN CASH AND CASH EQUIVALENTS (40) 201
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR 617 311
CASH AND CASH EQUIVALENTS AT END OF PERIOD 577 512
Supplemental Disclosures of Cash Flow Information:    
Utility plant received as construction advances and contributions 758 1,456
Interest paid 5,180 5,221
Income taxes paid $ 1,749 $ 971