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Fair Value of Financial Instruments: (Tables) (GSWC)

3 Months Ended

Mar. 31, 2013

GSWC

Schedule of estimates of the fair value of long-term debt

	March 31, 2013				December 31, 2012
(dollars in thousands)	Carrying Amount		Fair Value		Carrying Amount		Fair Value
Financial liabilities:
Long-term debt—GSWC	$	335,829	$	425,443	$	335,791	$	456,792

Schedule of long-term debt measured at fair value

(dollars in thousands)	Level 1	Level 2		Level 3	Total
Long-term debt—GSWC	—	$	425,443	—	$	425,443

- Definition

Tabular disclosure of liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, by class that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). Where the quoted price in an active market for the identical liability is not available, the Level 1 input is the quoted price of an identical liability when traded as an asset.

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