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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)
In Thousands, unless otherwise specified
 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
CASH FLOWS FROM OPERATING ACTIVITIES    
Net income $ 5,250 $ 2,762
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation and amortization 3,924 3,633
Deferred income taxes, net 1,641 1,233
Stock compensation 58 62
AFUDC, equity portion (76) (45)
Changes in assets and liabilities:    
Accounts receivable, net of allowance for doubtful accounts 305 685
Unbilled operating revenues 768 (760)
Materials and supplies 52 (114)
Prepaid property taxes 1,291 1,257
Prepaid expenses and other (20) 1,635
Other deferred assets (246) (239)
Regulatory assets 132 (35)
Accounts payable 161 (765)
Accrued expenses 223 721
Accrued interest 43 26
Customer deposits and other, net 350 491
Postretirement benefit obligation 0 (107)
NET CASH PROVIDED BY OPERATING ACTIVITIES 13,856 10,440
CASH FLOWS USED IN INVESTING ACTIVITIES    
Capital expenditures (net of AFUDC, equity portion) (9,962) (6,588)
Proceeds from sale of assets 14 30
NET CASH USED IN INVESTING ACTIVITIES (9,948) (6,558)
CASH FLOWS FROM FINANCING ACTIVITIES    
Net repayments under lines of credit agreements (2,986) (3,439)
Increase (decrease) in overdraft payable 969 (315)
Net advances and contributions in aid of construction 1,167 447
Change in deferred debt issuance costs 48 58
Net proceeds from issuance of common stock 832 638
Equity issuance costs 0 135
Dividends paid (3,370) (2,903)
Issuance of long-term debt 0 2,837
Principal repayments of long-term debt (488) (1,061)
NET CASH USED IN FINANCING ACTIVITIES (3,828) (3,873)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS 80 9
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR 311 179
CASH AND CASH EQUIVALENTS AT END OF PERIOD 391 188
Supplemental Disclosures of Cash Flow Information:    
Utility plant received as construction advances and contributions 395 382
Interest paid 3,491 3,664
Income taxes paid $ 335 $ 0