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v2.4.1.9

Unaudited Quarterly Financial Information (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Operating revenue | $ 69,286us-gaap_RegulatedOperatingRevenue | $ 125,430us-gaap_RegulatedOperatingRevenue | $ 70,356us-gaap_RegulatedOperatingRevenue | $ 54,596us-gaap_RegulatedOperatingRevenue | $ 67,262us-gaap_RegulatedOperatingRevenue | $ 85,238us-gaap_RegulatedOperatingRevenue | $ 74,230us-gaap_RegulatedOperatingRevenue | $ 50,139us-gaap_RegulatedOperatingRevenue | $ 319,668us-gaap_RegulatedOperatingRevenue | $ 276,869us-gaap_RegulatedOperatingRevenue | $ 261,547us-gaap_RegulatedOperatingRevenue
Operating Income (Loss) | 15,589us-gaap_OperatingIncomeLoss | 59,114us-gaap_OperatingIncomeLoss | 12,121us-gaap_OperatingIncomeLoss | 6,054us-gaap_OperatingIncomeLoss | 11,351us-gaap_OperatingIncomeLoss | 19,346us-gaap_OperatingIncomeLoss | 16,937us-gaap_OperatingIncomeLoss | 5,773us-gaap_OperatingIncomeLoss | 92,878us-gaap_OperatingIncomeLoss | 53,407us-gaap_OperatingIncomeLoss | 55,297us-gaap_OperatingIncomeLoss
Net income | 5,688us-gaap_NetIncomeLoss | 38,366us-gaap_NetIncomeLoss | 6,846us-gaap_NetIncomeLoss | 906us-gaap_NetIncomeLoss | 4,677us-gaap_NetIncomeLoss | 8,950us-gaap_NetIncomeLoss | 7,440us-gaap_NetIncomeLoss | 1,317us-gaap_NetIncomeLoss | 51,806us-gaap_NetIncomeLoss | 22,384us-gaap_NetIncomeLoss | 22,318us-gaap_NetIncomeLoss
Comprehensive income | $ 6,021us-gaap_ComprehensiveIncomeNetOfTax | $ 38,095us-gaap_ComprehensiveIncomeNetOfTax | $ 5,716us-gaap_ComprehensiveIncomeNetOfTax | $ 1,104us-gaap_ComprehensiveIncomeNetOfTax | $ 5,304us-gaap_ComprehensiveIncomeNetOfTax | $ 9,135us-gaap_ComprehensiveIncomeNetOfTax | $ 7,351us-gaap_ComprehensiveIncomeNetOfTax | $ 1,671us-gaap_ComprehensiveIncomeNetOfTax | $ 50,936us-gaap_ComprehensiveIncomeNetOfTax | $ 23,461us-gaap_ComprehensiveIncomeNetOfTax | $ 22,354us-gaap_ComprehensiveIncomeNetOfTax
Earnings per share |  |  |  |  |  |  |  |  |  |  |
—Basic (in dollars per share) | $ 0.28us-gaap_EarningsPerShareBasic | $ 1.90us-gaap_EarningsPerShareBasic | $ 0.34us-gaap_EarningsPerShareBasic | $ 0.04us-gaap_EarningsPerShareBasic | $ 0.23us-gaap_EarningsPerShareBasic | $ 0.44us-gaap_EarningsPerShareBasic | $ 0.37us-gaap_EarningsPerShareBasic | $ 0.07us-gaap_EarningsPerShareBasic | $ 2.56us-gaap_EarningsPerShareBasic | $ 1.13us-gaap_EarningsPerShareBasic | $ 1.20us-gaap_EarningsPerShareBasic
—Diluted (in dollars per share) | $ 0.28us-gaap_EarningsPerShareDiluted | $ 1.88us-gaap_EarningsPerShareDiluted | $ 0.34us-gaap_EarningsPerShareDiluted | $ 0.04us-gaap_EarningsPerShareDiluted | $ 0.23us-gaap_EarningsPerShareDiluted | $ 0.44us-gaap_EarningsPerShareDiluted | $ 0.37us-gaap_EarningsPerShareDiluted | $ 0.07us-gaap_EarningsPerShareDiluted | $ 2.54us-gaap_EarningsPerShareDiluted | $ 1.12us-gaap_EarningsPerShareDiluted | $ 1.18us-gaap_EarningsPerShareDiluted
Dividends per share | $ 0.19us-gaap_CommonStockDividendsPerShareDeclared | $ 0.19us-gaap_CommonStockDividendsPerShareDeclared | $ 0.19us-gaap_CommonStockDividendsPerShareDeclared | $ 0.19us-gaap_CommonStockDividendsPerShareDeclared | $ 0.18us-gaap_CommonStockDividendsPerShareDeclared | $ 0.18us-gaap_CommonStockDividendsPerShareDeclared | $ 0.18us-gaap_CommonStockDividendsPerShareDeclared | $ 0.18us-gaap_CommonStockDividendsPerShareDeclared |  |  |
--- High (in dollars per share) [Member] |  |  |  |  |  |  |  |  |  |  |
Earnings per share |  |  |  |  |  |  |  |  |  |  |
Market Price, Stock | $ 32.87sjw_MarketPriceStock / us-gaap_RangeAxis = us-gaap_MaximumMember | $ 28.25sjw_MarketPriceStock / us-gaap_RangeAxis = us-gaap_MaximumMember | $ 29.51sjw_MarketPriceStock / us-gaap_RangeAxis = us-gaap_MaximumMember | $ 30.40sjw_MarketPriceStock / us-gaap_RangeAxis = us-gaap_MaximumMember | $ 30.03sjw_MarketPriceStock / us-gaap_RangeAxis = us-gaap_MaximumMember | $ 28.52sjw_MarketPriceStock / us-gaap_RangeAxis = us-gaap_MaximumMember | $ 27.66sjw_MarketPriceStock / us-gaap_RangeAxis = us-gaap_MaximumMember | $ 28.09sjw_MarketPriceStock / us-gaap_RangeAxis = us-gaap_MaximumMember |  |  |
--- Low (in dollars per share) [Member] |  |  |  |  |  |  |  |  |  |  |
Earnings per share |  |  |  |  |  |  |  |  |  |  |
Market Price, Stock | $ 26.77sjw_MarketPriceStock / us-gaap_RangeAxis = us-gaap_MinimumMember | $ 25.64sjw_MarketPriceStock / us-gaap_RangeAxis = us-gaap_MinimumMember | $ 25.87sjw_MarketPriceStock / us-gaap_RangeAxis = us-gaap_MinimumMember | $ 27.84sjw_MarketPriceStock / us-gaap_RangeAxis = us-gaap_MinimumMember | $ 26.40sjw_MarketPriceStock / us-gaap_RangeAxis = us-gaap_MinimumMember | $ 25.62sjw_MarketPriceStock / us-gaap_RangeAxis = us-gaap_MinimumMember | $ 24.58sjw_MarketPriceStock / us-gaap_RangeAxis = us-gaap_MinimumMember | $ 25.70sjw_MarketPriceStock / us-gaap_RangeAxis = us-gaap_MinimumMember |  |  |

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