$SJW
SJW GROUP Stock $sjw

$sjw Overview Financials Valuation SEC Filings Company Website

2024 Q4 Form 10-Q Financial Statement

#000076682924000102 Filed on October 28, 2024

Income Statement

Concept	2024 Q4	2024 Q3
Revenue		$225.1M
YoY Change		9.87%
Cost Of Revenue		$28.48M
YoY Change		17.67%
Gross Profit		$196.6M
YoY Change		8.85%
Gross Profit Margin		87.35%
Selling, General & Admin		$25.71M
YoY Change		7.56%
% of Gross Profit		13.08%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization		$27.42M
YoY Change		1.57%
% of Gross Profit		13.95%
Operating Expenses		$138.2M
YoY Change		11.48%
Operating Profit		$58.35M
YoY Change		3.09%
Interest Expense		-$17.52M
YoY Change		-204.61%
% of Operating Profit		-30.02%
Other Income/Expense, Net		-$1.197M
YoY Change		-172.07%
Pretax Income		$40.58M
YoY Change		-0.5%
Income Tax		$1.928M
% Of Pretax Income		4.75%
Net Earnings		$38.65M
YoY Change		6.71%
Net Earnings / Revenue		17.17%
Basic Earnings Per Share		$1.17
Diluted Earnings Per Share		$1.17
COMMON SHARES
Basic Shares Outstanding	33.25M shares	32.71M shares
Diluted Shares Outstanding		32.98M shares

Balance Sheet

Concept	2024 Q4	2024 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments		$3.967M
YoY Change		-81.2%
Cash & Equivalents		$3.967M
Short-Term Investments
Other Short-Term Assets		$5.331M
YoY Change		-15.07%
Inventory
Prepaid Expenses		$15.41M
Receivables		$75.85M
Other Receivables		$17.55M
Total Short-Term Assets		$187.3M
YoY Change		-18.14%
LONG-TERM ASSETS
Property, Plant & Equipment		$3.343B
YoY Change		21.92%
Goodwill		$640.3M
YoY Change		0.0%
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets		$957.9M
YoY Change		14.46%
Total Long-Term Assets		$4.365B
YoY Change		20.76%
TOTAL ASSETS
Total Short-Term Assets		$187.3M
Total Long-Term Assets		$4.365B
Total Assets		$4.552B
YoY Change		18.44%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable		$44.48M
YoY Change		23.81%
Accrued Expenses		$70.16M
YoY Change		10.32%
Deferred Revenue
YoY Change
Short-Term Debt		$93.24M
YoY Change		-27.39%
Long-Term Debt Due		$8.088M
YoY Change		-81.39%
Total Short-Term Liabilities		$244.0M
YoY Change		-20.79%
LONG-TERM LIABILITIES
Long-Term Debt		$1.674B
YoY Change		9.12%
Other Long-Term Liabilities		$23.20M
YoY Change		0.27%
Total Long-Term Liabilities		$1.697B
YoY Change		8.99%
TOTAL LIABILITIES
Total Short-Term Liabilities		$244.0M
Total Long-Term Liabilities		$1.697B
Total Liabilities		$1.941B
YoY Change		4.07%
SHAREHOLDERS EQUITY
Retained Earnings		$527.6M
YoY Change		7.98%
Common Stock		$804.9M
YoY Change		10.29%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity		$1.334B
YoY Change
Total Liabilities & Shareholders Equity		$4.552B
YoY Change		18.44%

Cashflow Statement

Concept	2024 Q4	2024 Q3
OPERATING ACTIVITIES
Net Income		$38.65M
YoY Change		6.71%
Depreciation, Depletion And Amortization		$27.42M
YoY Change		1.57%
Cash From Operating Activities		$53.53M
YoY Change		-13.52%
INVESTING ACTIVITIES
Capital Expenditures		$100.9M
YoY Change		19.39%
Acquisitions
YoY Change
Other Investing Activities		-$811.0K
YoY Change		-97.46%
Cash From Investing Activities		-$101.7M
YoY Change		-12.56%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities		29.32M
YoY Change		-41.47%
NET CHANGE
Cash From Operating Activities		53.53M
Cash From Investing Activities		-101.7M
Cash From Financing Activities		29.32M
Net Change In Cash		-18.84M
YoY Change		338.07%
FREE CASH FLOW
Cash From Operating Activities		$53.53M
Capital Expenditures		$100.9M
Free Cash Flow		-$47.35M
YoY Change		109.52%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
	dei	Entity Central Index Key EntityCentralIndexKey	0000766829
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
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CY2023Q3	us-gaap	Revenues Revenues	204843000	usd
	us-gaap	Revenues Revenues	550619000	usd
	us-gaap	Revenues Revenues	499025000	usd
CY2024Q3	us-gaap	Cost Of Purchased Water CostOfPurchasedWater	54310000	usd
CY2023Q3	us-gaap	Cost Of Purchased Water CostOfPurchasedWater	46044000	usd
	us-gaap	Cost Of Purchased Water CostOfPurchasedWater	118631000	usd
	us-gaap	Cost Of Purchased Water CostOfPurchasedWater	101054000	usd
CY2024Q3	us-gaap	Utilities Operating Expense Purchased Power UtilitiesOperatingExpensePurchasedPower	3396000	usd
CY2023Q3	us-gaap	Utilities Operating Expense Purchased Power UtilitiesOperatingExpensePurchasedPower	2785000	usd
	us-gaap	Utilities Operating Expense Purchased Power UtilitiesOperatingExpensePurchasedPower	8560000	usd
	us-gaap	Utilities Operating Expense Purchased Power UtilitiesOperatingExpensePurchasedPower	7363000	usd
	sjw	Groundwater Extraction Charges GroundwaterExtractionCharges	46751000	usd
CY2024Q3	us-gaap	Utilities Operating Expense Other UtilitiesOperatingExpenseOther	12919000	usd
CY2024Q3	us-gaap	Water Production Costs WaterProductionCosts	95706000	usd
CY2023Q3	us-gaap	Water Production Costs WaterProductionCosts	82642000	usd
	us-gaap	Water Production Costs WaterProductionCosts	217970000	usd
	us-gaap	Water Production Costs WaterProductionCosts	191547000	usd
CY2024Q3	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	25708000	usd
CY2023Q3	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	23888000	usd
CY2024Q3	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	33226735	shares
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2024
	dei	Amendment Flag AmendmentFlag	false
	dei	Document Quarterly Report DocumentQuarterlyReport	true
	dei	Document Period End Date DocumentPeriodEndDate	2024-09-30
	dei	Document Transition Report DocumentTransitionReport	false
	dei	Entity Registrant Name EntityRegistrantName	SJW GROUP
	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	77-0066628
	dei	Entity Address Address Line1 EntityAddressAddressLine1	110 West Taylor Street
	dei	Entity Address City Or Town EntityAddressCityOrTown	San Jose
	us-gaap	Utilities Operating Expense Depreciation And Amortization UtilitiesOperatingExpenseDepreciationAndAmortization	78872000	usd
CY2024Q3	us-gaap	Other Intangible Assets Net OtherIntangibleAssetsNet	0	usd
CY2023Q4	us-gaap	Goodwill Goodwill	640311000	usd
CY2024Q3	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	6781000	usd
CY2023Q4	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	8056000	usd
CY2024Q3	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	957854000	usd
CY2023Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.001
CY2023Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	736191000	usd
CY2024Q3	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	527575000	usd
CY2023Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	495383000	usd
CY2024Q3	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	1349000	usd
CY2023Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	1791000	usd
CY2024Q3	us-gaap	Stockholders Equity StockholdersEquity	1333805000	usd
CY2023Q4	us-gaap	Stockholders Equity StockholdersEquity	1233397000	usd
CY2024Q3	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	1673715000	usd
CY2023Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	1526699000	usd
CY2024Q3	us-gaap	Capitalization Longterm Debt And Equity CapitalizationLongtermDebtAndEquity	3007520000	usd
CY2023Q4	us-gaap	Capitalization Longterm Debt And Equity CapitalizationLongtermDebtAndEquity	2760096000	usd
CY2024Q3	us-gaap	Lines Of Credit Current LinesOfCreditCurrent	93235000	usd
CY2023Q4	us-gaap	Lines Of Credit Current LinesOfCreditCurrent	171500000	usd
CY2024Q3	us-gaap	Long Term Debt Current LongTermDebtCurrent	8088000	usd
CY2023Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	48975000	usd
CY2024Q3	sjw	Accrued Groundwater Extraction Charges Purchased Water And Power AccruedGroundwaterExtractionChargesPurchasedWaterAndPower	38433000	usd
CY2023Q4	sjw	Accrued Groundwater Extraction Charges Purchased Water And Power AccruedGroundwaterExtractionChargesPurchasedWaterAndPower	24479000	usd
CY2024Q3	us-gaap	Accounts Payable Current AccountsPayableCurrent	44480000	usd
CY2023Q4	us-gaap	Interest Payable Current InterestPayableCurrent	15816000	usd
CY2024Q3	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	12180000	usd
CY2023Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	12229000	usd
CY2024Q3	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	26314000	usd
CY2023Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	20795000	usd
CY2024Q3	us-gaap	Liabilities Current LiabilitiesCurrent	244049000	usd
CY2023Q4	us-gaap	Liabilities Current LiabilitiesCurrent	342974000	usd
CY2024Q3	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	268370000	usd
CY2023Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	238528000	usd
CY2024Q3	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	150546000	usd
CY2023Q4	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	146582000	usd
CY2024Q3	us-gaap	Contributions In Aid Of Construction ContributionsInAidOfConstruction	336559000	usd
CY2023Q4	us-gaap	Contributions In Aid Of Construction ContributionsInAidOfConstruction	326451000	usd
CY2024Q3	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	48158000	usd
CY2023Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	46836000	usd
	us-gaap	Share Based Compensation ShareBasedCompensation	3576000	usd
	us-gaap	Public Utilities Allowance For Funds Used During Construction Additions PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions	1649000	usd
CY2024Q1	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	1101000	usd
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q3
	dei	City Area Code CityAreaCode	(408)
CY2024Q3	us-gaap	Utilities Operating Expense UtilitiesOperatingExpense	166710000	usd
CY2023Q3	us-gaap	Net Periodic Defined Benefits Expense Reversal Of Expense Excluding Service Cost Component NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent	740000	usd
	us-gaap	Net Periodic Defined Benefits Expense Reversal Of Expense Excluding Service Cost Component NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent	-2829000	usd
	us-gaap	Net Periodic Defined Benefits Expense Reversal Of Expense Excluding Service Cost Component NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent	906000	usd
CY2024Q3	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-1197000	usd
CY2023Q3	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	1661000	usd
	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	2659000	usd
	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	7042000	usd
CY2024Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	40580000	usd
CY2023Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	40783000	usd
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	78930000	usd
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	70165000	usd
CY2024Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1928000	usd
CY2023Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	4561000	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	7883000	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	4127000	usd
CY2024Q3	us-gaap	Net Income Loss NetIncomeLoss	38652000	usd
CY2023Q3	us-gaap	Net Income Loss NetIncomeLoss	36222000	usd
	us-gaap	Net Income Loss NetIncomeLoss	71047000	usd
	us-gaap	Net Income Loss NetIncomeLoss	66038000	usd
CY2024Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	0	usd
CY2023Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	318000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-442000	usd
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	420000	usd
CY2024Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	38652000	usd
CY2023Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	36540000	usd
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	70605000	usd
CY2024Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.17
CY2023Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.14
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.19
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.09
CY2024Q3	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.40
CY2023Q3	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.38
	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	1.20
	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	1.14
CY2024Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	32896967	shares
CY2023Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	31862518	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	32458666	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	31436077	shares
CY2024Q3	us-gaap	Public Utilities Property Plant And Equipment Land PublicUtilitiesPropertyPlantAndEquipmentLand	44646000	usd
CY2023Q4	us-gaap	Public Utilities Property Plant And Equipment Land PublicUtilitiesPropertyPlantAndEquipmentLand	41415000	usd
CY2024Q3	sjw	Public Utilities Property Plant And Equipment Depreciable Plant And Equipment PublicUtilitiesPropertyPlantAndEquipmentDepreciablePlantAndEquipment	4141490000	usd
CY2023Q4	sjw	Public Utilities Property Plant And Equipment Depreciable Plant And Equipment PublicUtilitiesPropertyPlantAndEquipmentDepreciablePlantAndEquipment	3967911000	usd
CY2024Q3	us-gaap	Public Utilities Property Plant And Equipment Construction Work In Progress PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress	203040000	usd
CY2023Q4	us-gaap	Public Utilities Property Plant And Equipment Construction Work In Progress PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress	106980000	usd
CY2024Q3	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	64372000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	35946000	usd
CY2024Q3	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	4453548000	usd
CY2023Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	4152252000	usd
CY2024Q3	us-gaap	Public Utilities Property Plant And Equipment Accumulated Depreciation PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation	1047631000	usd
CY2023Q4	us-gaap	Public Utilities Property Plant And Equipment Accumulated Depreciation PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation	981598000	usd
CY2024Q3	us-gaap	Public Utilities Property Plant And Equipment Net PublicUtilitiesPropertyPlantAndEquipmentNet	3405917000	usd
CY2023Q4	us-gaap	Public Utilities Property Plant And Equipment Net PublicUtilitiesPropertyPlantAndEquipmentNet	3170654000	usd
CY2024Q3	sjw	Nonutility Properties And Real Estate Investments At Cost NonutilityPropertiesAndRealEstateInvestmentsAtCost	1352000	usd
CY2023Q4	sjw	Nonutility Properties And Real Estate Investments At Cost NonutilityPropertiesAndRealEstateInvestmentsAtCost	13350000	usd
CY2024Q3	sjw	Nonutility Properties And Real Estate Investments Accumulated Depreciation And Amortization NonutilityPropertiesAndRealEstateInvestmentsAccumulatedDepreciationAndAmortization	97000	usd
CY2023Q4	sjw	Nonutility Properties And Real Estate Investments Accumulated Depreciation And Amortization NonutilityPropertiesAndRealEstateInvestmentsAccumulatedDepreciationAndAmortization	194000	usd
CY2024Q3	sjw	Nonutility Properties And Real Estate Investments Net NonutilityPropertiesAndRealEstateInvestmentsNet	1255000	usd
CY2023Q4	sjw	Nonutility Properties And Real Estate Investments Net NonutilityPropertiesAndRealEstateInvestmentsNet	13156000	usd
CY2024Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	3967000	usd
CY2023Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	9723000	usd
CY2024Q3	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	848000	usd
CY2023Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	6551000	usd
CY2024Q3	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	75849000	usd
CY2023Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	67870000	usd
CY2024Q3	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	11262000	usd
CY2023Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	5187000	usd
CY2024Q3	us-gaap	Nontrade Receivables Current NontradeReceivablesCurrent	6286000	usd
CY2023Q4	us-gaap	Nontrade Receivables Current NontradeReceivablesCurrent	3684000	usd
CY2024Q3	us-gaap	Receivables Long Term Contracts Or Programs ReceivablesLongTermContractsOrPrograms	68342000	usd
CY2023Q4	us-gaap	Receivables Long Term Contracts Or Programs ReceivablesLongTermContractsOrPrograms	49543000	usd
CY2024Q3	us-gaap	Assets Held For Sale Not Part Of Disposal Group AssetsHeldForSaleNotPartOfDisposalGroup	0	usd
CY2023Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	11110000	usd
CY2024Q3	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	828000	usd
CY2023Q4	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	4276000	usd
CY2023Q4	us-gaap	Other Assets Current OtherAssetsCurrent	6146000	usd
CY2024Q3	us-gaap	Assets Current AssetsCurrent	187276000	usd
CY2023Q4	us-gaap	Assets Current AssetsCurrent	198389000	usd
CY2024Q3	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	253162000	usd
CY2024Q3	us-gaap	Investments Investments	18213000	usd
CY2023Q4	us-gaap	Investments Investments	16411000	usd
CY2024Q3	us-gaap	Defined Benefit Plan Assets For Plan Benefits Noncurrent DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent	39387000	usd
CY2023Q4	us-gaap	Defined Benefit Plan Assets For Plan Benefits Noncurrent DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent	33794000	usd
CY2023Q4	us-gaap	Other Intangible Assets Net OtherIntangibleAssetsNet	28386000	usd
CY2024Q3	us-gaap	Goodwill Goodwill	640311000	usd
CY2024Q3	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	70000000	shares
	dei	Entity Address State Or Province EntityAddressStateOrProvince	CA
	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	95110
	dei	Local Phone Number LocalPhoneNumber	279-7800
	dei	Security12b Title Security12bTitle	Common Stock, par value $0.001 per share
	dei	Trading Symbol TradingSymbol	SJW
	dei	Security Exchange Name SecurityExchangeName	NYSE
	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
	dei	Entity Small Business EntitySmallBusiness	false
	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
	dei	Entity Shell Company EntityShellCompany	false
CY2024Q4	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	33253536	shares
CY2024Q3	sjw	Groundwater Extraction Charges GroundwaterExtractionCharges	25081000	usd
CY2023Q3	sjw	Groundwater Extraction Charges GroundwaterExtractionCharges	21398000	usd
	sjw	Groundwater Extraction Charges GroundwaterExtractionCharges	54759000	usd
CY2023Q3	us-gaap	Utilities Operating Expense Other UtilitiesOperatingExpenseOther	12415000	usd
	us-gaap	Utilities Operating Expense Other UtilitiesOperatingExpenseOther	36020000	usd
	us-gaap	Utilities Operating Expense Other UtilitiesOperatingExpenseOther	36379000	usd
	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	71964000	usd
	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	71759000	usd
CY2024Q3	us-gaap	Utilities Operating Expense Maintenance UtilitiesOperatingExpenseMaintenance	8512000	usd
CY2023Q3	us-gaap	Utilities Operating Expense Maintenance UtilitiesOperatingExpenseMaintenance	6457000	usd
	us-gaap	Utilities Operating Expense Maintenance UtilitiesOperatingExpenseMaintenance	23080000	usd
	us-gaap	Utilities Operating Expense Maintenance UtilitiesOperatingExpenseMaintenance	18813000	usd
CY2024Q3	us-gaap	Utilities Operating Expense Taxes UtilitiesOperatingExpenseTaxes	9361000	usd
CY2023Q3	us-gaap	Utilities Operating Expense Taxes UtilitiesOperatingExpenseTaxes	8795000	usd
	us-gaap	Utilities Operating Expense Taxes UtilitiesOperatingExpenseTaxes	26610000	usd
	us-gaap	Utilities Operating Expense Taxes UtilitiesOperatingExpenseTaxes	25092000	usd
CY2024Q3	us-gaap	Utilities Operating Expense Depreciation And Amortization UtilitiesOperatingExpenseDepreciationAndAmortization	27423000	usd
CY2023Q3	us-gaap	Utilities Operating Expense Depreciation And Amortization UtilitiesOperatingExpenseDepreciationAndAmortization	26455000	usd
	us-gaap	Utilities Operating Expense Depreciation And Amortization UtilitiesOperatingExpenseDepreciationAndAmortization	84159000	usd
CY2023Q3	us-gaap	Utilities Operating Expense UtilitiesOperatingExpense	148237000	usd
	us-gaap	Utilities Operating Expense UtilitiesOperatingExpense	423783000	usd
	us-gaap	Utilities Operating Expense UtilitiesOperatingExpense	386083000	usd
CY2024Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	58353000	usd
CY2023Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	56606000	usd
	us-gaap	Operating Income Loss OperatingIncomeLoss	126836000	usd
	us-gaap	Operating Income Loss OperatingIncomeLoss	112942000	usd
CY2024Q3	us-gaap	Interest Expense Debt InterestExpenseDebt	17516000	usd
CY2023Q3	us-gaap	Interest Expense Debt InterestExpenseDebt	16744000	usd
	us-gaap	Interest Expense Debt InterestExpenseDebt	53394000	usd
	us-gaap	Interest Expense Debt InterestExpenseDebt	48913000	usd
CY2024Q3	us-gaap	Net Periodic Defined Benefits Expense Reversal Of Expense Excluding Service Cost Component NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent	-940000	usd
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	66458000	usd
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.10
CY2024Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.17
CY2023Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.13
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.18
CY2024Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	32982580	shares
CY2023Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	31934636	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	32530954	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	31526732	shares
CY2023Q4	us-gaap	Assets Held For Sale Not Part Of Disposal Group AssetsHeldForSaleNotPartOfDisposalGroup	40850000	usd
CY2024Q3	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	15411000	usd
CY2024Q3	us-gaap	Other Assets Current OtherAssetsCurrent	5331000	usd
CY2023Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	235910000	usd
CY2023Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	962868000	usd
CY2024Q3	us-gaap	Assets Assets	4552302000	usd
CY2023Q4	us-gaap	Assets Assets	4345067000	usd
CY2024Q3	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.001
CY2023Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	70000000	shares
CY2024Q3	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	33226735	shares
CY2023Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	32023004	shares
CY2023Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	32023004	shares
CY2024Q3	us-gaap	Common Stock Value CommonStockValue	33000	usd
CY2023Q4	us-gaap	Common Stock Value CommonStockValue	32000	usd
CY2024Q3	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	804848000	usd
CY2023Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	46121000	usd
CY2024Q3	us-gaap	Interest Payable Current InterestPayableCurrent	19549000	usd
CY2024Q3	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	1770000	usd
CY2023Q4	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	3059000	usd
CY2024Q3	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	473899000	usd
CY2023Q4	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	461108000	usd
CY2024Q3	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	23201000	usd
CY2023Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	22492000	usd
CY2024Q3	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		usd
CY2023Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		usd
CY2024Q3	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	4552302000	usd
CY2023Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	4345067000	usd
CY2023Q4	us-gaap	Stockholders Equity StockholdersEquity	1233397000	usd
CY2024Q1	us-gaap	Net Income Loss NetIncomeLoss	11699000	usd
CY2024Q1	us-gaap	Other Comprehensive Income Availableforsale Securities Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent	-163000	usd
CY2024Q1	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	-442000	usd
CY2024Q1	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	1529000	usd
CY2024Q1	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	-1215000	usd
CY2024Q1	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	7006000	usd
CY2024Q1	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.40
CY2024Q1	us-gaap	Dividends Dividends	12824000	usd
CY2024Q1	us-gaap	Stockholders Equity StockholdersEquity	1240251000	usd
CY2024Q2	us-gaap	Net Income Loss NetIncomeLoss	20696000	usd
CY2024Q2	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	1267000	usd
CY2024Q2	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	-2000	usd
CY2024Q2	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	25296000	usd
CY2024Q2	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.40
CY2024Q2	us-gaap	Dividends Dividends	12900000	usd
CY2024Q2	us-gaap	Stockholders Equity StockholdersEquity	1274608000	usd
CY2024Q3	us-gaap	Net Income Loss NetIncomeLoss	38652000	usd
CY2024Q3	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	1558000	usd
CY2024Q3	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	-1000	usd
CY2024Q3	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	1087000	usd
CY2024Q3	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	31007000	usd
CY2024Q3	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.40
CY2024Q3	us-gaap	Dividends Dividends	13106000	usd
CY2024Q3	us-gaap	Stockholders Equity StockholdersEquity	1333805000	usd
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	1110868000	usd
CY2023Q1	us-gaap	Net Income Loss NetIncomeLoss	11530000	usd
CY2023Q1	us-gaap	Other Comprehensive Income Availableforsale Securities Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent	0	usd
CY2023Q1	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	93000	usd
CY2023Q1	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	1177000	usd
CY2023Q1	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	-1538000	usd
CY2023Q1	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	1080000	usd
CY2023Q1	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	40997000	usd
CY2023Q1	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.38
CY2023Q1	us-gaap	Dividends Dividends	11722000	usd
CY2023Q1	us-gaap	Stockholders Equity StockholdersEquity	1152485000	usd
CY2023Q2	us-gaap	Net Income Loss NetIncomeLoss	18286000	usd
CY2023Q2	us-gaap	Other Comprehensive Income Availableforsale Securities Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent	-37000	usd
CY2023Q2	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	8000	usd
CY2023Q2	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	1122000	usd
CY2023Q2	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	-20000	usd
CY2023Q2	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	22782000	usd
CY2023Q2	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.38
CY2023Q2	us-gaap	Dividends Dividends	11947000	usd
CY2023Q2	us-gaap	Stockholders Equity StockholdersEquity	1182716000	usd
CY2023Q3	us-gaap	Net Income Loss NetIncomeLoss	36222000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Availableforsale Securities Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent	193000	usd
CY2023Q3	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	318000	usd
CY2023Q3	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	1230000	usd
CY2023Q3	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	-706000	usd
CY2023Q3	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	1061000	usd
CY2023Q3	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	11505000	usd
CY2023Q3	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.38
CY2023Q3	us-gaap	Dividends Dividends	12093000	usd
CY2023Q3	us-gaap	Stockholders Equity StockholdersEquity	1220253000	usd
	us-gaap	Net Income Loss NetIncomeLoss	71047000	usd
	us-gaap	Net Income Loss NetIncomeLoss	66038000	usd
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	85811000	usd
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	80544000	usd
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	27142000	usd
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	12996000	usd
	us-gaap	Share Based Compensation ShareBasedCompensation	4379000	usd
	us-gaap	Public Utilities Allowance For Funds Used During Construction Additions PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions	1750000	usd
	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	26509000	usd
	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	26782000	usd
	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-2271000	usd
	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	557000	usd
	sjw	Increase Decrease In Accrued Groundwater Extraction Charges Purchased Water And Power IncreaseDecreaseInAccruedGroundwaterExtractionChargesPurchasedWaterAndPower	13954000	usd
	sjw	Increase Decrease In Accrued Groundwater Extraction Charges Purchased Water And Power IncreaseDecreaseInAccruedGroundwaterExtractionChargesPurchasedWaterAndPower	13463000	usd
	us-gaap	Increase Decrease In Accrued Taxes Payable IncreaseDecreaseInAccruedTaxesPayable	-17960000	usd
	us-gaap	Increase Decrease In Accrued Taxes Payable IncreaseDecreaseInAccruedTaxesPayable	690000	usd
	us-gaap	Increase Decrease In Pension And Postretirement Obligations IncreaseDecreaseInPensionAndPostretirementObligations	-2363000	usd
	us-gaap	Increase Decrease In Pension And Postretirement Obligations IncreaseDecreaseInPensionAndPostretirementObligations	-1851000	usd
	sjw	Increase Decrease To Regulatory Asset And Liabilities Excluding Cost Of Removal Income Tax Temporary Differences Net And Postretirement Benefits IncreaseDecreaseToRegulatoryAssetAndLiabilitiesExcludingCostOfRemovalIncomeTaxTemporaryDifferencesNetAndPostretirementBenefits	-836000	usd
	sjw	Increase Decrease To Regulatory Asset And Liabilities Excluding Cost Of Removal Income Tax Temporary Differences Net And Postretirement Benefits IncreaseDecreaseToRegulatoryAssetAndLiabilitiesExcludingCostOfRemovalIncomeTaxTemporaryDifferencesNetAndPostretirementBenefits	-16092000	usd
	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-1750000	usd
	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	4371000	usd
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	154066000	usd
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	159303000	usd
	sjw	Payments To Acquire Water Systems Using Company Funds PaymentsToAcquireWaterSystemsUsingCompanyFunds	252275000	usd
	sjw	Payments To Acquire Water Systems Using Company Funds PaymentsToAcquireWaterSystemsUsingCompanyFunds	195937000	usd
	sjw	Payments To Acquire Water Systems Using Contributions In Aid Of Construction PaymentsToAcquireWaterSystemsUsingContributionsInAidOfConstruction	18757000	usd
	sjw	Payments To Acquire Water Systems Using Contributions In Aid Of Construction PaymentsToAcquireWaterSystemsUsingContributionsInAidOfConstruction	13604000	usd
	sjw	Payments To Acquire Nonutility Assets PaymentsToAcquireNonutilityAssets	0	usd
	sjw	Payments To Acquire Nonutility Assets PaymentsToAcquireNonutilityAssets	24244000	usd
	us-gaap	Payments For Proceeds From Removal Costs PaymentsForProceedsFromRemovalCosts	2286000	usd
	us-gaap	Payments For Proceeds From Removal Costs PaymentsForProceedsFromRemovalCosts	908000	usd
	us-gaap	Proceeds From Sale Of Real Estate Heldforinvestment ProceedsFromSaleOfRealEstateHeldforinvestment	40669000	usd
	us-gaap	Proceeds From Sale Of Real Estate Heldforinvestment ProceedsFromSaleOfRealEstateHeldforinvestment	0	usd
	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	usd
	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	7286000	usd
	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	29000	usd
	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-238000	usd
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-232678000	usd
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-241741000	usd
	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	156000000	usd
	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	102655000	usd
	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	235149000	usd
	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	133800000	usd
	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	150329000	usd
	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	70000000	usd
	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	43053000	usd
	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	3062000	usd
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	63309000	usd
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	75284000	usd
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	38830000	usd
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	35762000	usd
	sjw	Receipts Of Advances And Contributions In Aid Of Construction ReceiptsOfAdvancesAndContributionsInAidOfConstruction	22304000	usd
	sjw	Receipts Of Advances And Contributions In Aid Of Construction ReceiptsOfAdvancesAndContributionsInAidOfConstruction	18889000	usd
	sjw	Repayments Of Advances For Construction Financing Activities RepaymentsOfAdvancesForConstructionFinancingActivities	2113000	usd
	sjw	Repayments Of Advances For Construction Financing Activities RepaymentsOfAdvancesForConstructionFinancingActivities	2148000	usd
	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	59000	usd
	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-895000	usd
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	72856000	usd
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	91161000	usd
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-5756000	usd
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	8723000	usd
CY2023Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	9723000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	12344000	usd
CY2024Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	3967000	usd
CY2023Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	21067000	usd
	us-gaap	Interest Paid InterestPaid	52299000	usd
	us-gaap	Interest Paid InterestPaid	44132000	usd
	us-gaap	Interest Paid Net InterestPaidNet	49716000	usd
	us-gaap	Interest Paid Net InterestPaidNet	42199000	usd
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	1292000	usd
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	818000	usd
	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	35970000	usd
	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	26315000	usd
	sjw	Utility Property Installed By Developer UtilityPropertyInstalledByDeveloper	699000	usd
	sjw	Utility Property Installed By Developer UtilityPropertyInstalledByDeveloper	1295000	usd
	sjw	Proceeds Receivable From Sale Of Real Estate Investments ProceedsReceivableFromSaleOfRealEstateInvestments	2801000	usd
	sjw	Proceeds Receivable From Sale Of Real Estate Investments ProceedsReceivableFromSaleOfRealEstateInvestments	0	usd
	sjw	Accrued Selling Expenses On Sale Of Real Estate Investments AccruedSellingExpensesOnSaleOfRealEstateInvestments	2201000	usd
	sjw	Accrued Selling Expenses On Sale Of Real Estate Investments AccruedSellingExpensesOnSaleOfRealEstateInvestments	0	usd
	sjw	Seller Financing In Asset Acquisition Net Of Discount SellerFinancingInAssetAcquisitionNetOfDiscount	0	usd
	sjw	Seller Financing In Asset Acquisition Net Of Discount SellerFinancingInAssetAcquisitionNetOfDiscount	15400000	usd
	sjw	Number Of Subsidiaries NumberOfSubsidiaries	5	subsidiary
CY2024Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	216677000	usd
CY2023Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	211716000	usd
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	539790000	usd
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	507276000	usd
CY2024Q3	sjw	Alternative Revenue Programs Net AlternativeRevenueProgramsNet	7369000	usd
CY2023Q3	sjw	Alternative Revenue Programs Net AlternativeRevenueProgramsNet	957000	usd
	sjw	Alternative Revenue Programs Net AlternativeRevenueProgramsNet	6847000	usd
	sjw	Alternative Revenue Programs Net AlternativeRevenueProgramsNet	-2638000	usd
CY2024Q3	sjw	Regulatory Balancing And Memorandum Accounts And Regulatory Mechanisms Net RegulatoryBalancingAndMemorandumAccountsAndRegulatoryMechanismsNet	-1432000	usd
CY2023Q3	sjw	Regulatory Balancing And Memorandum Accounts And Regulatory Mechanisms Net RegulatoryBalancingAndMemorandumAccountsAndRegulatoryMechanismsNet	-9260000	usd
	sjw	Regulatory Balancing And Memorandum Accounts And Regulatory Mechanisms Net RegulatoryBalancingAndMemorandumAccountsAndRegulatoryMechanismsNet	-1019000	usd
	sjw	Regulatory Balancing And Memorandum Accounts And Regulatory Mechanisms Net RegulatoryBalancingAndMemorandumAccountsAndRegulatoryMechanismsNet	-9906000	usd
CY2024Q3	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	2449000	usd
CY2023Q3	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	1430000	usd
	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	5001000	usd
	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	4293000	usd
CY2024Q3	us-gaap	Revenues Revenues	225063000	usd
CY2023Q3	us-gaap	Revenues Revenues	204843000	usd
	us-gaap	Revenues Revenues	550619000	usd
	us-gaap	Revenues Revenues	499025000	usd
CY2024Q3	us-gaap	Land Land	915000	usd
CY2023Q4	us-gaap	Land Land	4137000	usd
CY2024Q3	sjw	Wholesale Water Supply Assets WholesaleWaterSupplyAssets	0	usd
CY2023Q4	sjw	Wholesale Water Supply Assets WholesaleWaterSupplyAssets	8465000	usd
CY2024Q3	us-gaap	Investment Building And Building Improvements InvestmentBuildingAndBuildingImprovements	437000	usd
CY2023Q4	us-gaap	Investment Building And Building Improvements InvestmentBuildingAndBuildingImprovements	748000	usd
CY2024Q3	sjw	Nonutility Properties And Real Estate Investments At Cost NonutilityPropertiesAndRealEstateInvestmentsAtCost	1352000	usd
CY2023Q4	sjw	Nonutility Properties And Real Estate Investments At Cost NonutilityPropertiesAndRealEstateInvestmentsAtCost	13350000	usd
CY2024Q3	sjw	Nonutility Properties And Real Estate Investments Accumulated Depreciation And Amortization NonutilityPropertiesAndRealEstateInvestmentsAccumulatedDepreciationAndAmortization	97000	usd
CY2023Q4	sjw	Nonutility Properties And Real Estate Investments Accumulated Depreciation And Amortization NonutilityPropertiesAndRealEstateInvestmentsAccumulatedDepreciationAndAmortization	194000	usd
CY2024Q3	sjw	Nonutility Properties And Real Estate Investments Net NonutilityPropertiesAndRealEstateInvestmentsNet	1255000	usd
CY2023Q4	sjw	Nonutility Properties And Real Estate Investments Net NonutilityPropertiesAndRealEstateInvestmentsNet	13156000	usd
	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	-969000	usd
CY2024Q3	sjw	Portion Of Proceeds From Sale Of Productive Assets Held In Escrow PortionOfProceedsFromSaleOfProductiveAssetsHeldInEscrow	2801000	usd
CY2023Q3	sjw	Number Of Wells Acquired NumberOfWellsAcquired	8	well
CY2024Q3	sjw	Indefinite Life Water Rights Reclassified From Other Intangible Assets To Utility Plant Intangible Assets IndefiniteLifeWaterRightsReclassifiedFromOtherIntangibleAssetsToUtilityPlantIntangibleAssets	28386000	usd
CY2024Q3	sjw	Indefinite Life Water Rights Reclassified From Nonutility Property To Utility Plant IndefiniteLifeWaterRightsReclassifiedFromNonutilityPropertyToUtilityPlant	11684000	usd
CY2024Q3	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	1534801000	usd
CY2023Q4	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	1394412000	usd
CY2024Q2	us-gaap	Allowance For Doubtful Accounts Receivable Period Increase Decrease AllowanceForDoubtfulAccountsReceivablePeriodIncreaseDecrease	-7822000	usd
CY2024Q3	us-gaap	Regulatory Assets RegulatoryAssets	253990000	usd
CY2023Q4	us-gaap	Regulatory Assets RegulatoryAssets	240186000	usd
CY2024Q3	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	828000	usd
CY2023Q4	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	4276000	usd
CY2024Q3	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	253162000	usd
CY2023Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	235910000	usd
CY2024Q3	us-gaap	Regulatory Liabilities RegulatoryLiabilities	475669000	usd
CY2023Q4	us-gaap	Regulatory Liabilities RegulatoryLiabilities	464167000	usd
CY2024Q3	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	1770000	usd
CY2023Q4	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	3059000	usd
CY2024Q3	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	473899000	usd
CY2023Q4	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	461108000	usd
CY2024Q3	sjw	Regulatory Balancing And Memorandum Accounts Review Authorized Revenue Threshold Percentage RegulatoryBalancingAndMemorandumAccountsReviewAuthorizedRevenueThresholdPercentage	0.02
CY2024Q3	us-gaap	Remaining Amounts Of Regulatory Assets For Which No Return On Investment During Recovery Period Is Provided RemainingAmountsOfRegulatoryAssetsForWhichNoReturnOnInvestmentDuringRecoveryPeriodIsProvided	41962000	usd
CY2023Q4	us-gaap	Remaining Amounts Of Regulatory Assets For Which No Return On Investment During Recovery Period Is Provided RemainingAmountsOfRegulatoryAssetsForWhichNoReturnOnInvestmentDuringRecoveryPeriodIsProvided	43141000	usd
CY2024Q3	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.0661
CY2023Q4	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.0648
CY2024Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1928000	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	7883000	usd
CY2023Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	4561000	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	4127000	usd
CY2024Q3	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.05
CY2023Q3	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.11
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.10
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.06
CY2024Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	4920000	usd
CY2023Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	4511000	usd
CY2024Q3	sjw	Service Agreement Term Of Contract ServiceAgreementTermOfContract	P12Y
CY2024Q3	sjw	Service Agreement Renewal Term ServiceAgreementRenewalTerm	P8Y
CY2024Q3	sjw	Service Agreement Annual Rent Expense ServiceAgreementAnnualRentExpense	1800000	usd
CY2024Q3	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	2258000	usd
	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	4516000	usd
CY2024Q3	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	1566000	usd
CY2023Q3	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	1238000	usd
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	4379000	usd
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	4379000	usd
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	3576000	usd
	sjw	Number Of Subsidiaries NumberOfSubsidiaries	5	subsidiary
CY2024Q3	us-gaap	Revenues Revenues	225063000	usd
CY2024Q3	us-gaap	Utilities Operating Expense UtilitiesOperatingExpense	166710000	usd
CY2024Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	58353000	usd
CY2024Q3	us-gaap	Net Income Loss NetIncomeLoss	38652000	usd
CY2024Q3	us-gaap	Utilities Operating Expense Depreciation And Amortization UtilitiesOperatingExpenseDepreciationAndAmortization	27423000	usd
CY2024Q3	us-gaap	Interest Expense Nonoperating InterestExpenseNonoperating	17516000	usd
CY2024Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1928000	usd
CY2023Q3	us-gaap	Revenues Revenues	204843000	usd
CY2023Q3	us-gaap	Utilities Operating Expense UtilitiesOperatingExpense	148237000	usd
CY2023Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	56606000	usd
CY2023Q3	us-gaap	Net Income Loss NetIncomeLoss	36222000	usd
CY2023Q3	us-gaap	Utilities Operating Expense Depreciation And Amortization UtilitiesOperatingExpenseDepreciationAndAmortization	26455000	usd
CY2023Q3	us-gaap	Interest Expense Nonoperating InterestExpenseNonoperating	16744000	usd
CY2023Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	4561000	usd
	us-gaap	Revenues Revenues	550619000	usd
	us-gaap	Utilities Operating Expense UtilitiesOperatingExpense	423783000	usd
	us-gaap	Operating Income Loss OperatingIncomeLoss	126836000	usd
	us-gaap	Net Income Loss NetIncomeLoss	71047000	usd
	us-gaap	Utilities Operating Expense Depreciation And Amortization UtilitiesOperatingExpenseDepreciationAndAmortization	84159000	usd
	us-gaap	Interest Expense Nonoperating InterestExpenseNonoperating	53394000	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	7883000	usd
	us-gaap	Revenues Revenues	499025000	usd
	us-gaap	Utilities Operating Expense UtilitiesOperatingExpense	386083000	usd
	us-gaap	Operating Income Loss OperatingIncomeLoss	112942000	usd
	us-gaap	Net Income Loss NetIncomeLoss	66038000	usd
	us-gaap	Utilities Operating Expense Depreciation And Amortization UtilitiesOperatingExpenseDepreciationAndAmortization	78872000	usd
	us-gaap	Interest Expense Nonoperating InterestExpenseNonoperating	48913000	usd
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	4127000	usd
CY2024Q3	us-gaap	Assets Assets	4552302000	usd
CY2023Q4	us-gaap	Assets Assets	4345067000	usd
CY2024Q3	us-gaap	Assets Assets	4552302000	usd
CY2023Q4	us-gaap	Assets Assets	4345067000	usd
CY2024Q3	ecd	Non Rule10b51 Arr Adopted Flag NonRule10b51ArrAdoptedFlag	false
CY2024Q3	ecd	Rule10b51 Arr Adopted Flag Rule10b51ArrAdoptedFlag	false
CY2024Q3	ecd	Rule10b51 Arr Trmntd Flag Rule10b51ArrTrmntdFlag	false
CY2024Q3	ecd	Non Rule10b51 Arr Trmntd Flag NonRule10b51ArrTrmntdFlag	false

Files In Submission

Name	View Source	Status
0000766829-24-000102-index-headers.html	Edgar Link	pending
0000766829-24-000102-index.html	Edgar Link	pending
0000766829-24-000102.txt	Edgar Link	pending
0000766829-24-000102-xbrl.zip	Edgar Link	pending
exhibit102.htm	Edgar Link	pending
exhibit103.htm	Edgar Link	pending
Financial_Report.xlsx	Edgar Link	pending
MetaLinks.json	Edgar Link	pending
R1.htm	Edgar Link	pending
R10.htm	Edgar Link	pending
R11.htm	Edgar Link	pending
R12.htm	Edgar Link	pending
R13.htm	Edgar Link	pending
R14.htm	Edgar Link	pending
R15.htm	Edgar Link	pending
R16.htm	Edgar Link	pending
R17.htm	Edgar Link	pending
R18.htm	Edgar Link	pending
R19.htm	Edgar Link	pending
R2.htm	Edgar Link	pending
R20.htm	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
R21.htm	Edgar Link	pending
R22.htm	Edgar Link	pending
R23.htm	Edgar Link	pending
R24.htm	Edgar Link	pending
R25.htm	Edgar Link	pending
R26.htm	Edgar Link	pending
R27.htm	Edgar Link	pending
R28.htm	Edgar Link	pending
R29.htm	Edgar Link	pending
R3.htm	Edgar Link	pending
R30.htm	Edgar Link	pending
R31.htm	Edgar Link	pending
R32.htm	Edgar Link	pending
R33.htm	Edgar Link	pending
R34.htm	Edgar Link	pending
R35.htm	Edgar Link	pending
R36.htm	Edgar Link	pending
R37.htm	Edgar Link	pending
R38.htm	Edgar Link	pending
R39.htm	Edgar Link	pending
R4.htm	Edgar Link	pending
R40.htm	Edgar Link	pending
R41.htm	Edgar Link	pending
R42.htm	Edgar Link	pending
R43.htm	Edgar Link	pending
R44.htm	Edgar Link	pending
R5.htm	Edgar Link	pending
R6.htm	Edgar Link	pending
R7.htm	Edgar Link	pending
R8.htm	Edgar Link	pending
R9.htm	Edgar Link	pending
report.css	Edgar Link	pending
Show.js	Edgar Link	pending
sjw-20240930.htm	Edgar Link	pending
sjw-20240930.xsd	Edgar Link	pending
sjw-93024xex311.htm	Edgar Link	pending
sjw-93024xex312.htm	Edgar Link	pending
sjw-93024xex321.htm	Edgar Link	pending
sjw-93024xex322.htm	Edgar Link	pending
sjw-20240930_cal.xml	Edgar Link	unprocessable
sjw-20240930_def.xml	Edgar Link	unprocessable
sjw-20240930_lab.xml	Edgar Link	unprocessable
sjw-20240930_pre.xml	Edgar Link	unprocessable
sjw-20240930_htm.xml	Edgar Link	completed

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$SJW
SJW GROUP Stock $sjw

2024 Q4 Form 10-Q Financial Statement

#000076682924000102 Filed on October 28, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$SJW SJW GROUP Stock $sjw

2024 Q4 Form 10-Q Financial Statement

#000076682924000102 Filed on October 28, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$SJW
SJW GROUP Stock $sjw