Fair Value of Financial Instruments

6 Months Ended

Jun. 30, 2011

Fair Value of Financial Instruments [Abstract]

Fair Value of Financial Instruments

Note 5 Fair Value of Financial Instruments

The carrying amount of current assets and liabilities that are considered financial instruments approximates their fair value as of the dates presented. The carrying amount and estimated fair value of the Company's long-term debt are as follows:

		June 30,		December 31,
		2011		2010
Carrying Amount	$	1,559,027	$	1,560,389
Estimated Fair Value		1,586,315		1,483,816

The fair value of long-term debt has been determined by discounting the future cash flows using current market interest rates for similar financial instruments of the same duration. The Company's customers' advances for construction and related tax deposits have a carrying value of $66,143 as of June 30, 2011, and $66,966 as of December 31, 2010. Their relative fair values cannot be accurately estimated because future refund payments depend on several variables, including new customer connections, customer consumption levels, and future rate increases. Portions of these non-interest bearing instruments are payable annually through 2026 and amounts not paid by the contract expiration dates become non-refundable. The fair value of these amounts would, however, be less than their carrying value due to the non-interest bearing feature.