XML 42 R30.htm IDEA: XBRL DOCUMENT
v3.7.0.1

Real Estate Investments - Long Lived Asset Held-For-Sale (Details) - USD ($) $ in Thousands |  | 3 Months Ended | 6 Months Ended
--- | --- | --- | ---
Apr. 06, 2017 | Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016
Long Lived Assets Held-for-sale [Line Items] |  |  |  |  |
Gain on sale of real estate investments |  | $ 6,903 | $ 0 | $ 6,903 | $ 0
CA undeveloped land |  |  |  |  |
Long Lived Assets Held-for-sale [Line Items] |  |  |  |  |
Proceeds from Sale of Real Estate Held-for-investment | $ 1,350 |  |  |  |
Gain on sale of real estate investments | 580 |  |  |  |
Real Estate Selling Expenses | 14 |  |  |  |
Partnership Interest |  |  |  |  |
Long Lived Assets Held-for-sale [Line Items] |  |  |  |  |
Limited Partnership (LP) Ownership Interest |  |  |  | 70.00% |
Partnership Interest | 444 West Santa Clara Street |  |  |  |  |
Long Lived Assets Held-for-sale [Line Items] |  |  |  |  |
Proceeds from Sale of Real Estate Held-for-investment | 11,000 |  |  |  |
Gain on sale of real estate investments | 6,323 |  |  |  |
Real Estate Selling Expenses | 1,156 |  |  |  |
Parent [Member] | 444 West Santa Clara Street |  |  |  |  |
Long Lived Assets Held-for-sale [Line Items] |  |  |  |  |
Gain on sale of real estate investments | 4,427 |  |  |  |
Noncontrolling Interest [Member] | 444 West Santa Clara Street |  |  |  |  |
Long Lived Assets Held-for-sale [Line Items] |  |  |  |  |
Gain on sale of real estate investments | $ 1,896 |  |  |  |

X
- Definition Real Estate Selling Expenses + References No definition available. + Details
Name: | sjw_RealEstateSellingExpenses
Namespace Prefix: | sjw_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The difference between the carrying value and the sale price of real estate or properties that were intended to be sold or held for capital appreciation or rental income. This element refers to the gain (loss) included in earnings and not to the cash proceeds of the sale. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 + Details
Name: | us-gaap_GainLossOnSaleOfProperties
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Percentage investment held by members or limited partners of limited liability company (LLC) or limited partnership (LP). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 272 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6373374&loc=d3e70478-108055 + Details
Name: | us-gaap_LimitedLiabilityCompanyLLCOrLimitedPartnershipLPMembersOrLimitedPartnersOwnershipInterest
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_LongLivedAssetsHeldForSaleLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Cash received from the sale of real estate that is held for investment, that is, it is part of an investing activity during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3179-108585 + Details
Name: | us-gaap_ProceedsFromSaleOfRealEstateHeldforinvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_LongLivedAssetsHeldForSaleByAssetTypeAxis=sjw_CAUndevelopedLandMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConsolidatedEntitiesAxis=us-gaap_PartnershipInterestMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongLivedAssetsHeldForSaleByAssetTypeAxis=sjw_A444WestSantaClaraStreetMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConsolidatedEntitiesAxis=us-gaap_ParentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConsolidatedEntitiesAxis=us-gaap_NoncontrollingInterestMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |