Long-Term Debt Long-Term Debt in Text (Details) (USD $)	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Debt Instrument [Line Items]
Long-term Debt, Current Maturities	$ (1,304,000)	$ 0
Proceeds from Issuance of Long-term Debt	92,840,000	8,061,000	0
Unsecured Water Facilities Revenue Refinancing Bonds Series A Issued 2011 Due 2021 [Member]
Debt Instrument [Line Items]
Long-term Debt, Description	22.05
Proceeds from Issuance of Long-term Debt	24,000,000
Debt Instrument, Interest Rate Terms	.05
Debt Instrument, Face Amount	$ 22,050,000
Debt Instrument, Maturity Date	Dec. 20, 2021

The stated principal amount of the debt instrument at time of issuance, which may vary from the carrying amount because of unamortized premium or discount.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

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-Publisher AICPA

-Name Accounting Principles Board Opinion (APB)

-Number 21

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Description of the interest rate as being fixed or variable, and, if variable, identification of the index or rate on which the interest rate is based and the number of points or percentage added to that index or rate to set the rate, and other pertinent information, such as frequency of rate resets.

+ References

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

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-Name Statement of Financial Accounting Standard (FAS)

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Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

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Carrying amount of long-term debt, net of unamortized discount or premium, scheduled to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Description of long-term debt arrangements, which are debt arrangements that originally require full repayment more than twelve months after issuance or greater than the normal operating cycle of the company, if longer, and disclosures pertaining to the underlying arrangements, including repayment terms, conversion features, interest rates, restrictions on assets and activities, debt covenants, and other matters important to users of the financial statements. Types of long-term debt arrangements include borrowing under notes payable, bonds payable, debentures, term loans, and other contractual obligations for payment.

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The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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