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Regulatory Matters: CPUC Rehearing Matter and Procurement Audits (Details) (USD $) | 1 Months Ended | 12 Months Ended | 1 Months Ended
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Dec. 31, 2011 Audit | Dec. 31, 2012 | Dec. 31, 2010 | Jul. 31, 2011 GSWC La Serena Plant Improvement Project CPUC Rehearing Matter
Regulatory matters: |  |  |  |
Costs included in rehearing matter |  |  |  | $ 3,500,000
Disallowed costs and related refunds |  | $ 416,000 | $ 2,200,000 |
Separate independent audits | 3 |  |  |
Separate independent audits, period of years after settlement date | 10 years |  |  |

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- Definition Represents the number of separate independent audits of procurement practices agreed as a part of the settlement agreement. + References No definition available. + Details
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- Definition Number of Years of Separate Independent Audits of Procurement Practices Agreed under Settlement Agreement + References No definition available. + Details
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- Details
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- Definition The cash outflow for acquisition of or capital improvements to properties held for investment (operating, managed, leased) or for use. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585 + Details
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