CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Operating Activities:
Net Income	$ 11,300	$ 9,798	$ 10,209
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities:
Deferred Revenues	239	239	527
Allowance for Funds Used During Construction	(188)	(171)	(238)
Depreciation (including $812 in 2011, $806 in 2010, and $763 in 2009 charged to other accounts)	8,585	7,894	7,166
Change in Assets and Liabilities:
Decrease (Increase) in Accounts Receivable and Accrued Unbilled Revenues	1,566	(4,561)	175
Decrease (Increase) in Other Current Assets	40	(380)	328
Decrease in Other Non-Current Items, net	2,681	968	551
Increase in Accounts Payable, Accrued Expenses and Other Current Liabilities	138	1,272	438
Increase in Deferred Income Taxes and Investment Tax Credits, Net	1,988	1,708	1,575
Total Adjustments	15,049	6,969	10,522
Net Cash and Cash Equivalents Provided by Operating Activities	26,349	16,767	20,731
Investing Activities:
Company Financed Additions to Utility Plant	(22,858)	(26,240)	(27,598)
Advances from Others for Construction	(966)	(281)	(513)
Net Additions to Utility Plant Used in Continuing Operations	(23,824)	(26,521)	(28,111)
Purchase of Customer Contracts	0	(900)	0
Purchase of water systems, net of cash acquired	(216)	(297)	(1,469)
Release of restricted cash	1,226	11,460	0
Net Cash and Cash Equivalents Used in Investing Activities	(22,814)	(16,258)	(29,580)
Financing Activities:
Net Proceeds from Interim Bank Loans	21,372	26,342	25,000
Net Repayment of Interim Bank Loans	(26,342)	(25,000)	(12,074)
Proceeds from Issuance of Common Stock	1,346	1,358	1,323
Proceeds from Exercise of Stock Options	146	287	390
Costs Incurred to Issue Long-Term Debt and Common Stock	(380)	(2)	(464)
Repayment of Long-Term Debt Including Current Portion	(410)	(280)	(280)
Proceeds from Issuance of Long-Term Debt	8,061	0	6,903
Advances from Others for Construction	966	281	513
Cash Dividends Paid	(8,234)	(7,980)	(7,709)
Net Cash and Cash Equivalents (Used in) Provided by Financing Activities	(3,475)	(4,994)	13,602
Net Increase (Decrease) in Cash and Cash Equivalents	60	(4,485)	4,753
Cash and Cash Equivalents at Beginning of Year	952	5,437	684
Cash and Cash Equivalents at End of Year	1,012	952	5,437
Non-Cash Investing and Financing Activities:
Non-Cash Contributed Utility Plant (see Note 1 for details)	334	707	1,664
Short-term Investment of Bond Proceeds Held in Trust	15,930	1,226	12,697
Cash Paid for:
Interest	5,432	5,478	4,366
State and Federal Income Taxes	$ 5,347	$ 3,814	$ 2,907