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Subsequent Events (Details) (San Jose Water Company [Member], Senior Notes [Member], USD $) In Thousands, unless otherwise specified | 12 Months Ended | 0 Months Ended
--- | --- | ---
Dec. 31, 2013 | Jan. 24, 2014 John Hancock Life Insurance [Member] Subsequent Event [Member]
Subsequent Event [Line Items] |  |
Debt amount |  | $ 50,000
Stated interest rates |  | 5.14%
Ratio of indebtedness to total capital | 0.6666 | 66.66
Ratio of net income available for interest charges for the trailing 12-month calendar period to interest charges | 1.75 | 1.75

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