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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) (USD $)
In Thousands, unless otherwise specified
 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
CASH FLOWS FROM OPERATING ACTIVITIES:    
Net Income $ 5,532 $ 6,255
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities:    
Depreciation and Amortization 5,489 5,174
Provision for Deferred Income Taxes and Investment Tax Credits 990 422
Equity Portion of Allowance for Funds Used During Construction (AFUDC) (170) (260)
Cash Surrender Value of Life Insurance (90) (86)
Stock Compensation Expense 372 234
Changes in Assets and Liabilities:    
Accounts Receivable 4,201 1,827
Unbilled Revenues (1,351) (1,567)
Materials & Supplies (18) 247
Prepayments (620) (836)
Accounts Payable (909) (699)
Accrued Taxes 1,405 485
Accrued Interest (6) 82
Employee Benefit Plans 1,846 891
Unearned Revenue & Advanced Service Fees 9 2
Other Assets and Liabilities (867) (87)
NET CASH PROVIDED BY OPERATING ACTIVITIES 15,813 12,084
CASH FLOWS FROM INVESTING ACTIVITIES:    
Utility Plant Expenditures, Including AFUDC of $103 in 2012, $131 in 2011 (12,574) (11,039)
Restricted Cash (2,578) 1,145
Investment in Joint Venture (500)   
NET CASH USED IN INVESTING ACTIVITIES (15,652) (9,894)
CASH FLOWS FROM FINANCING ACTIVITIES:    
Redemption of Long-term Debt (1,590) (1,434)
Proceeds from Issuance of Long-term Debt 4,929 2,315
Net Short-term Bank Borrowings 1,000 3,250
Deferred Debt Issuance Expense (22) (19)
Repurchase of Preferred Stock    (9)
Proceeds from Issuance of Common Stock 788 775
Payment of Common Dividends (5,809) (5,688)
Payment of Preferred Dividends (103) (103)
Construction Advances and Contributions-Net 267 553
NET CASH USED IN FINANCING ACTIVITIES (540) (360)
NET CHANGES IN CASH AND CASH EQUIVALENTS (379) 1,830
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD 3,106 2,453
CASH AND CASH EQUIVALENTS AT END OF PERIOD 2,727 4,283
SUPPLEMENTAL DISCLOSURE OF NON-CASH ACTIVITY:    
Utility Plant received as Construction Advances and Contributions 453 6,288
Cash Paid During the Year for:    
Interest 3,208 2,918
Interest Capitalized 103 131
Income Taxes $ 774 $ 2,550