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Regulatory Matters (Details 6) (GSWC, USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Regulatory matters:
Net regulatory assets	$ 122,681,000	$ 176,015,000
General rate case memorandum accounts
Regulatory matters:
Net regulatory assets	15,645,000	4,495,000
Effect of retroactive increase in rate	$ 11,500,000

X

- Definition

Effect of Retroactive Increase in Rate

+ References

No definition available.

+ Details

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- Details

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X

- Definition

The net amount of all regulatory assets less all regulatory liabilities as of the end of the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 980

-SubTopic 340

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6499975&loc=d3e44250-110382

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