CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Stock Issued During Period, Value, Acquisitions	$ 12,012	$ 0	$ 0
Operating Activities:
Net Income	13,640	11,300	9,798
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities:
Deferred Revenues	239	239	239
Allowance for Funds Used During Construction	(239)	(188)	(171)
Depreciation (including $330 and $604 in 2012 and 2011 charged to other accounts)	10,052	8,585	7,894
Gain (Loss) on Sale of Properties	(951)	(176)	(230)
Change in Assets and Liabilities:
Increase in Accounts Receivable and Accrued Unbilled Revenues	(1,333)	1,566	(4,561)
Increase in Prepayments and Other Current Assets	(24)	40	(380)
Decrease in Other Non-Current Items	5,645	2,681	968
Increase in Accounts Payable, Accrued Expenses and Other Current Liabilities	166	138	1,272
Increase in Deferred Income Taxes and Investment Tax Credits, Net	(826)	2,164	1,938
Total Adjustments	12,729	15,049	6,969
Net Cash and Cash Equivalents Provided by Operating Activities	26,369	26,349	16,767
Investing Activities:
Company Financed Additions to Utility Plant	(24,653)	(22,858)	(26,240)
Advances from Others for Construction	(1,041)	(966)	(281)
Net Additions to Utility Plant Used in Continuing Operations	(25,694)	(23,824)	(26,521)
Purchase of Customer Contracts	0	0	900
Purchase of water systems, net of cash acquired	(35,754)	(216)	(297)
Proceeds from Sale of Land Held-for-investment	1,450	0	0
Release of restricted cash	6,117	1,226	11,460
Net Cash and Cash Equivalents Used in Investing Activities	(53,881)	(22,814)	(16,258)
Financing Activities:
Proceeds from Interim Bank Loans	1,660	21,372	26,342
Repayment of Interim Bank Loans	(21,372)	(26,342)	(25,000)
Proceeds from Issuance of Common Stock	51,101	1,346	1,358
Proceeds from Issuance of Long-term Debt	92,840	8,061	0
Proceeds from the Exercise of Stock Options	631	146	287
Costs to Issue Long-Term Debt and Common Stock	(2,316)	(380)	(2)
Repayment of Long-Term Debt Including Current Portion	(75,430)	(410)	(280)
Advances from Others for Construction	1,041	966	281
Cash Dividends Paid	(8,505)	(8,234)	(7,980)
Net Cash and Cash Equivalents (Used in) Provided by Financing Activities	39,650	(3,475)	(4,994)
Net Increase in Cash and Cash Equivalents	12,138	60	(4,485)
Cash and Cash Equivalents at Beginning of Period	1,012	952	5,437
Cash and Cash Equivalents at End of Year	13,150	1,012	952
Non-Cash Investing and Financing Activities:
Non-Cash Contributed Utility Plant	1,089	334	707
Short-term Investment of Bond Proceeds Held in Restricted Cash	9,820	15,930	1,226
Cash Paid for:
Interest	8,488	5,432	5,478
State and Federal Income Taxes	$ 6,161	$ 5,347	$ 3,814