$SJW
SJW GROUP Stock $sjw

$sjw Overview Financials Valuation SEC Filings Company Website

2024 Q1 Form 10-K Financial Statement

#000076682924000023 Filed on February 23, 2024

Income Statement

Concept	2024 Q1	2023 Q4	2023
Revenue	$149.4M	$171.3M	$670.4M
YoY Change	8.8%	-0.02%	8.0%
Cost Of Revenue	$14.55M	$18.47M	$72.58M
YoY Change	15.89%	457.44%	11.58%
Gross Profit	$134.8M	$152.9M	$597.8M
YoY Change	8.09%	-9.04%	7.58%
Gross Profit Margin	90.26%	89.22%	89.17%
Selling, General & Admin	$25.79M	$26.90M	$98.66M
YoY Change	5.93%	11.93%	3.41%
% of Gross Profit	19.13%	17.59%	16.5%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$28.92M	$27.00M	$108.1M
YoY Change	7.76%	1.58%	1.6%
% of Gross Profit	21.45%	17.66%	18.09%
Operating Expenses	$106.9M	$116.4M	$448.3M
YoY Change	7.39%	-1.66%	4.06%
Operating Profit	$27.91M	$36.49M	$149.4M
YoY Change	10.86%	-26.6%	14.09%
Interest Expense	-$17.58M	-$17.23M	$66.14M
YoY Change	-211.49%	8.36%	13.92%
% of Operating Profit	-63.0%	-47.22%	44.26%
Other Income/Expense, Net	$3.601M	$1.516M	$8.882M
YoY Change	10.26%	-60.66%	102.55%
Pretax Income	$13.93M	$20.78M	$90.94M
YoY Change	10.49%	-45.8%	10.47%
Income Tax	$2.231M	$1.829M	$5.956M
% Of Pretax Income	16.02%	8.8%	6.55%
Net Earnings	$11.70M	$18.95M	$84.99M
YoY Change	1.47%	-43.43%	15.11%
Net Earnings / Revenue	7.83%	11.06%	12.68%
Basic Earnings Per Share	$0.36		$2.69
Diluted Earnings Per Share	$0.36	$0.59	$2.68
COMMON SHARES
Basic Shares Outstanding	32.06M shares	31.93M shares	31.58M shares
Diluted Shares Outstanding	32.14M shares		31.66M shares

Balance Sheet

Concept	2024 Q1	2023 Q4	2023
SHORT-TERM ASSETS
Cash & Short-Term Investments	$4.542M	$9.723M	$9.723M
YoY Change	-80.53%	-21.23%	-21.23%
Cash & Equivalents	$4.542M	$9.723M
Short-Term Investments
Other Short-Term Assets	$105.8M	$6.146M	$111.9M
YoY Change	1601.75%	0.84%	44.16%
Inventory
Prepaid Expenses	$12.82M	$11.11M
Receivables	$62.65M	$67.87M	$67.87M
Other Receivables	$5.110M	$8.871M	$8.871M
Total Short-Term Assets	$178.1M	$198.4M	$198.4M
YoY Change	-8.13%	28.23%	28.23%
LONG-TERM ASSETS
Property, Plant & Equipment	$3.186B	$3.148B	$3.148B
YoY Change	21.63%	19.45%	18.57%
Goodwill	$640.3M	$640.3M
YoY Change	0.0%	0.0%
Intangibles
YoY Change
Long-Term Investments		$16.41M	$16.41M
YoY Change		-87.11%	-87.11%
Other Assets	$298.7M	$962.9M	$294.2M
YoY Change	-62.82%	19.36%	651.74%
Total Long-Term Assets	$4.189B	$4.147B	$4.147B
YoY Change	21.13%	19.23%	19.23%
TOTAL ASSETS
Total Short-Term Assets	$178.1M	$198.4M	$198.4M
Total Long-Term Assets	$4.189B	$4.147B	$4.147B
Total Assets	$4.368B	$4.345B	$4.345B
YoY Change	19.58%	19.61%	19.61%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$34.40M	$46.12M	$46.12M
YoY Change	32.43%	55.91%	55.91%
Accrued Expenses	$45.08M	$52.52M	$52.52M
YoY Change	13.02%	15.38%	15.38%
Deferred Revenue
YoY Change
Short-Term Debt	$210.7M	$171.5M	$171.5M
YoY Change	190.96%	7.47%	7.47%
Long-Term Debt Due	$9.002M	$48.98M	$48.98M
YoY Change	-79.67%	1023.28%	1023.28%
Total Short-Term Liabilities	$323.3M	$343.0M	$343.0M
YoY Change	51.79%	29.6%	29.6%
LONG-TERM LIABILITIES
Long-Term Debt	$1.550B	$1.527B	$1.527B
YoY Change	1.97%	2.33%	2.33%
Other Long-Term Liabilities	$1.014B	$22.49M	$1.003B
YoY Change	3802.46%	-13.1%	83.45%
Total Long-Term Liabilities	$2.564B	$1.549B	$2.530B
YoY Change	65.81%	2.06%	24.09%
TOTAL LIABILITIES
Total Short-Term Liabilities	$323.3M	$343.0M	$343.0M
Total Long-Term Liabilities	$2.564B	$1.549B	$2.530B
Total Liabilities	$3.127B	$1.892B	$3.112B
YoY Change	77.76%	6.15%	23.39%
SHAREHOLDERS EQUITY
Retained Earnings	$494.2M	$495.4M
YoY Change	7.88%	8.08%
Common Stock	$744.7M	$736.2M
YoY Change	7.49%	13.09%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$1.240B	$1.233B	$1.233B
YoY Change
Total Liabilities & Shareholders Equity	$4.368B	$4.345B	$4.345B
YoY Change	19.58%	19.61%	19.61%

Cashflow Statement

Concept	2024 Q1	2023 Q4	2023
OPERATING ACTIVITIES
Net Income	$11.70M	$18.95M	$84.99M
YoY Change	1.47%	-43.43%	15.11%
Depreciation, Depletion And Amortization	$28.92M	$27.00M	$108.1M
YoY Change	7.76%	1.58%	1.6%
Cash From Operating Activities	$51.22M	$31.53M	$190.8M
YoY Change	1.2%	-14.44%	14.82%
INVESTING ACTIVITIES
Capital Expenditures	$73.51M	$79.09M	$288.6M
YoY Change	33.45%	24.68%	19.41%
Acquisitions
YoY Change
Other Investing Activities	-$762.0K	-$1.445M	-$233.0K
YoY Change	238.67%	-359.89%	-91.07%
Cash From Investing Activities	-$74.27M	-$80.53M	-$322.3M
YoY Change	34.97%	28.08%	31.9%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net			$80.66M
YoY Change			106.37%
Debt Paid & Issued, Net	$40.97M		$4.347M
YoY Change	4185.67%		-95.13%
Cash From Financing Activities	17.88M	37.66M	$128.8M
YoY Change	16.0%	49.57%	64.41%
NET CHANGE
Cash From Operating Activities	51.22M	31.53M	$190.8M
Cash From Investing Activities	-74.27M	-80.53M	-$322.3M
Cash From Financing Activities	17.88M	37.66M	$128.8M
Net Change In Cash	-5.181M	-11.34M	-$2.621M
YoY Change	-147.15%	1240.9%	-1264.89%
FREE CASH FLOW
Cash From Operating Activities	$51.22M	$31.53M	$190.8M
Capital Expenditures	$73.51M	$79.09M	$288.6M
Free Cash Flow	-$22.30M	-$47.56M	-$97.80M
YoY Change	397.66%	78.92%	29.5%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2023	us-gaap	Increase Decrease In Accrued Taxes Payable IncreaseDecreaseInAccruedTaxesPayable	-22415000	usd
CY2023	us-gaap	Increase Decrease In Pension And Postretirement Obligations IncreaseDecreaseInPensionAndPostretirementObligations	-1549000	usd
CY2023	dei	Entity Central Index Key EntityCentralIndexKey	0000766829
CY2023	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2023
CY2023	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2023	dei	Amendment Flag AmendmentFlag	false
CY2023	dei	Document Annual Report DocumentAnnualReport	true
CY2023	dei	Document Period End Date DocumentPeriodEndDate	2023-12-31
CY2023	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2023	dei	Document Transition Report DocumentTransitionReport	false
CY2023	dei	Entity File Number EntityFileNumber	001-8966
CY2023	dei	Entity Registrant Name EntityRegistrantName	SJW GROUP
CY2023	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
CY2023	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	77-0066628
CY2023	dei	Entity Address Address Line1 EntityAddressAddressLine1	110 West Taylor Street,
CY2023	dei	Entity Address City Or Town EntityAddressCityOrTown	San Jose,
CY2023	dei	Entity Address State Or Province EntityAddressStateOrProvince	CA
CY2023	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	95110
CY2023	dei	City Area Code CityAreaCode	(408)
CY2023	dei	Local Phone Number LocalPhoneNumber	279-7800
CY2023	dei	Security12b Title Security12bTitle	Common Stock, par value $0.001 per share
CY2023	dei	Trading Symbol TradingSymbol	SJW
CY2023	dei	Security Exchange Name SecurityExchangeName	NYSE
CY2023	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2023	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2023	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2023	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2023	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2023	dei	Entity Small Business EntitySmallBusiness	false
CY2023	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2023	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	true
CY2023	dei	Document Fin Stmt Error Correction Flag DocumentFinStmtErrorCorrectionFlag	false
CY2023	dei	Entity Shell Company EntityShellCompany	false
CY2023Q2	dei	Entity Public Float EntityPublicFloat	2199000000	usd
CY2024Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	32060353	shares
CY2023	dei	Auditor Name AuditorName	Deloitte & Touche LLP
CY2023	dei	Auditor Location AuditorLocation	San Jose, California
CY2023Q4	us-gaap	Public Utilities Property Plant And Equipment Land PublicUtilitiesPropertyPlantAndEquipmentLand	41415000	usd
CY2022Q4	us-gaap	Public Utilities Property Plant And Equipment Land PublicUtilitiesPropertyPlantAndEquipmentLand	39982000	usd
CY2022Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	925478000	usd
CY2023Q4	sjw	Public Utilities Property Plant And Equipment Depreciable Plant And Equipment PublicUtilitiesPropertyPlantAndEquipmentDepreciablePlantAndEquipment	3967911000	usd
CY2022Q4	sjw	Public Utilities Property Plant And Equipment Depreciable Plant And Equipment PublicUtilitiesPropertyPlantAndEquipmentDepreciablePlantAndEquipment	3661285000	usd
CY2023Q4	us-gaap	Public Utilities Property Plant And Equipment Construction Work In Progress PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress	106980000	usd
CY2022Q4	us-gaap	Public Utilities Property Plant And Equipment Construction Work In Progress PublicUtilitiesPropertyPlantAndEquipmentConstructionWorkInProgress	116851000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	35946000	usd
CY2022Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	35959000	usd
CY2023Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	4152252000	usd
CY2022Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	3854077000	usd
CY2023Q4	us-gaap	Public Utilities Property Plant And Equipment Accumulated Depreciation PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation	981598000	usd
CY2022Q4	us-gaap	Public Utilities Property Plant And Equipment Accumulated Depreciation PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation	1223760000	usd
CY2023Q4	us-gaap	Public Utilities Property Plant And Equipment Net PublicUtilitiesPropertyPlantAndEquipmentNet	3170654000	usd
CY2022Q4	us-gaap	Public Utilities Property Plant And Equipment Net PublicUtilitiesPropertyPlantAndEquipmentNet	2630317000	usd
CY2023Q4	us-gaap	Real Estate Investment Property At Cost RealEstateInvestmentPropertyAtCost	13350000	usd
CY2022Q4	us-gaap	Real Estate Investment Property At Cost RealEstateInvestmentPropertyAtCost	58033000	usd
CY2023Q4	us-gaap	Real Estate Investment Property Accumulated Depreciation RealEstateInvestmentPropertyAccumulatedDepreciation	194000	usd
CY2022Q4	us-gaap	Real Estate Investment Property Accumulated Depreciation RealEstateInvestmentPropertyAccumulatedDepreciation	17158000	usd
CY2023Q4	us-gaap	Real Estate Investment Property Net RealEstateInvestmentPropertyNet	13156000	usd
CY2022Q4	us-gaap	Real Estate Investment Property Net RealEstateInvestmentPropertyNet	40875000	usd
CY2023Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	9723000	usd
CY2022Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	12344000	usd
CY2023Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	6551000	usd
CY2022Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	5753000	usd
CY2023Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	67870000	usd
CY2022Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	59172000	usd
CY2023Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	5187000	usd
CY2022Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	0	usd
CY2023Q4	us-gaap	Nontrade Receivables Current NontradeReceivablesCurrent	3684000	usd
CY2022Q4	us-gaap	Nontrade Receivables Current NontradeReceivablesCurrent	5560000	usd
CY2023Q4	us-gaap	Receivables Long Term Contracts Or Programs ReceivablesLongTermContractsOrPrograms	49543000	usd
CY2022Q4	us-gaap	Receivables Long Term Contracts Or Programs ReceivablesLongTermContractsOrPrograms	45722000	usd
CY2023Q4	us-gaap	Assets Held For Sale Not Part Of Disposal Group AssetsHeldForSaleNotPartOfDisposalGroup	40850000	usd
CY2022Q4	us-gaap	Assets Held For Sale Not Part Of Disposal Group AssetsHeldForSaleNotPartOfDisposalGroup	0	usd
CY2023Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	11110000	usd
CY2022Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	9753000	usd
CY2023Q4	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	4276000	usd
CY2022Q4	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	19740000	usd
CY2023Q4	us-gaap	Other Assets Current OtherAssetsCurrent	6146000	usd
CY2022Q4	us-gaap	Other Assets Current OtherAssetsCurrent	6095000	usd
CY2023Q4	us-gaap	Assets Current AssetsCurrent	198389000	usd
CY2022Q4	us-gaap	Assets Current AssetsCurrent	158386000	usd
CY2023Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	235910000	usd
CY2022Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	246035000	usd
CY2023Q4	us-gaap	Investments Investments	16411000	usd
CY2022Q4	us-gaap	Investments Investments	14819000	usd
CY2023Q4	us-gaap	Defined Benefit Plan Assets For Plan Benefits Noncurrent DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent	33794000	usd
CY2022Q4	us-gaap	Defined Benefit Plan Assets For Plan Benefits Noncurrent DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent	16990000	usd
CY2023Q4	us-gaap	Other Intangible Assets Net OtherIntangibleAssetsNet	28386000	usd
CY2022Q4	us-gaap	Other Intangible Assets Net OtherIntangibleAssetsNet	0	usd
CY2023Q4	us-gaap	Goodwill Goodwill	640311000	usd
CY2022Q4	us-gaap	Goodwill Goodwill	640311000	usd
CY2023Q4	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	8056000	usd
CY2022Q4	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	7323000	usd
CY2023Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	962868000	usd
CY2023Q4	us-gaap	Assets Assets	4345067000	usd
CY2022Q4	us-gaap	Assets Assets	3755056000	usd
CY2022Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.001
CY2023Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.001
CY2022Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	70000000	shares
CY2023Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	70000000	shares
CY2023Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	32023004	shares
CY2023Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	32023004	shares
CY2022Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	30801912	shares
CY2022Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	30801912	shares
CY2023Q4	us-gaap	Common Stock Value CommonStockValue	32000	usd
CY2022Q4	us-gaap	Common Stock Value CommonStockValue	31000	usd
CY2023Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	736191000	usd
CY2022Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	651004000	usd
CY2023Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	495383000	usd
CY2022Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	458356000	usd
CY2023Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	1791000	usd
CY2022Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	1477000	usd
CY2023Q4	us-gaap	Stockholders Equity StockholdersEquity	1233397000	usd
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	1110868000	usd
CY2023Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	1526699000	usd
CY2022Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	1491965000	usd
CY2023Q4	us-gaap	Capitalization Longterm Debt And Equity CapitalizationLongtermDebtAndEquity	2760096000	usd
CY2022Q4	us-gaap	Capitalization Longterm Debt And Equity CapitalizationLongtermDebtAndEquity	2602833000	usd
CY2023Q4	us-gaap	Lines Of Credit Current LinesOfCreditCurrent	171500000	usd
CY2022Q4	us-gaap	Lines Of Credit Current LinesOfCreditCurrent	159578000	usd
CY2023Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	48975000	usd
CY2022Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	4360000	usd
CY2023Q4	sjw	Accrued Groundwater Extraction Charges Purchased Water And Power AccruedGroundwaterExtractionChargesPurchasedWaterAndPower	24479000	usd
CY2022Q4	sjw	Accrued Groundwater Extraction Charges Purchased Water And Power AccruedGroundwaterExtractionChargesPurchasedWaterAndPower	19707000	usd
CY2023Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	46121000	usd
CY2022Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	29581000	usd
CY2023Q4	us-gaap	Interest Payable Current InterestPayableCurrent	15816000	usd
CY2022Q4	us-gaap	Interest Payable Current InterestPayableCurrent	13907000	usd
CY2023Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	12229000	usd
CY2022Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	11908000	usd
CY2023Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	0	usd
CY2022Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	2696000	usd
CY2023Q4	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	3059000	usd
CY2022Q4	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	3672000	usd
CY2023Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	20795000	usd
CY2022Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	22913000	usd
CY2023Q4	us-gaap	Liabilities Current LiabilitiesCurrent	342974000	usd
CY2022Q4	us-gaap	Liabilities Current LiabilitiesCurrent	268322000	usd
CY2023Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	238528000	usd
CY2022Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	218155000	usd
CY2023Q4	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	146582000	usd
CY2022Q4	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	137696000	usd
CY2023Q4	us-gaap	Contributions In Aid Of Construction ContributionsInAidOfConstruction	326451000	usd
CY2022Q4	us-gaap	Contributions In Aid Of Construction ContributionsInAidOfConstruction	323668000	usd
CY2023Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	46836000	usd
CY2022Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	59738000	usd
CY2023Q4	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	461108000	usd
CY2022Q4	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	118760000	usd
CY2023Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	22492000	usd
CY2022Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	25884000	usd
CY2023Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		usd
CY2022Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		usd
CY2023Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	4345067000	usd
CY2022Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	3755056000	usd
CY2023	us-gaap	Revenues Revenues	670363000	usd
CY2022	us-gaap	Revenues Revenues	620698000	usd
CY2021	us-gaap	Revenues Revenues	573686000	usd
CY2023	us-gaap	Cost Of Purchased Water CostOfPurchasedWater	135982000	usd
CY2022	us-gaap	Cost Of Purchased Water CostOfPurchasedWater	122334000	usd
CY2021	us-gaap	Cost Of Purchased Water CostOfPurchasedWater	98231000	usd
CY2023	us-gaap	Utilities Operating Expense Purchased Power UtilitiesOperatingExpensePurchasedPower	9602000	usd
CY2022	us-gaap	Utilities Operating Expense Purchased Power UtilitiesOperatingExpensePurchasedPower	8889000	usd
CY2021	us-gaap	Utilities Operating Expense Purchased Power UtilitiesOperatingExpensePurchasedPower	13511000	usd
CY2023	sjw	Groundwater Extraction Charges GroundwaterExtractionCharges	62980000	usd
CY2022	sjw	Groundwater Extraction Charges GroundwaterExtractionCharges	56158000	usd
CY2021	sjw	Groundwater Extraction Charges GroundwaterExtractionCharges	75866000	usd
CY2023	us-gaap	Utilities Operating Expense Other UtilitiesOperatingExpenseOther	47636000	usd
CY2022	us-gaap	Utilities Operating Expense Other UtilitiesOperatingExpenseOther	45409000	usd
CY2021	us-gaap	Utilities Operating Expense Other UtilitiesOperatingExpenseOther	41475000	usd
CY2023	us-gaap	Water Production Costs WaterProductionCosts	256200000	usd
CY2022	us-gaap	Water Production Costs WaterProductionCosts	232790000	usd
CY2021	us-gaap	Water Production Costs WaterProductionCosts	229083000	usd
CY2023	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	98656000	usd
CY2022	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	95404000	usd
CY2021	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	87332000	usd
CY2023	us-gaap	Utilities Operating Expense Maintenance UtilitiesOperatingExpenseMaintenance	25729000	usd
CY2022	us-gaap	Utilities Operating Expense Maintenance UtilitiesOperatingExpenseMaintenance	30734000	usd
CY2021	us-gaap	Utilities Operating Expense Maintenance UtilitiesOperatingExpenseMaintenance	26031000	usd
CY2023	us-gaap	Utilities Operating Expense Taxes UtilitiesOperatingExpenseTaxes	34475000	usd
CY2022	us-gaap	Utilities Operating Expense Taxes UtilitiesOperatingExpenseTaxes	32572000	usd
CY2021	us-gaap	Utilities Operating Expense Taxes UtilitiesOperatingExpenseTaxes	30964000	usd
CY2023	us-gaap	Utilities Operating Expense Depreciation And Amortization UtilitiesOperatingExpenseDepreciationAndAmortization	105868000	usd
CY2022	us-gaap	Utilities Operating Expense Depreciation And Amortization UtilitiesOperatingExpenseDepreciationAndAmortization	104417000	usd
CY2021	us-gaap	Utilities Operating Expense Depreciation And Amortization UtilitiesOperatingExpenseDepreciationAndAmortization	94400000	usd
CY2023	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	0	usd
CY2022	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	6197000	usd
CY2021	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	7494000	usd
CY2023	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	0	usd
CY2022	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	0	usd
CY2021	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	2211000	usd
CY2023	us-gaap	Utilities Operating Expense UtilitiesOperatingExpense	520928000	usd
CY2022	us-gaap	Utilities Operating Expense UtilitiesOperatingExpense	489720000	usd
CY2021	us-gaap	Utilities Operating Expense UtilitiesOperatingExpense	462527000	usd
CY2023	us-gaap	Operating Income Loss OperatingIncomeLoss	149435000	usd
CY2022	us-gaap	Operating Income Loss OperatingIncomeLoss	130978000	usd
CY2021	us-gaap	Operating Income Loss OperatingIncomeLoss	111159000	usd
CY2023	us-gaap	Interest Expense Debt InterestExpenseDebt	66144000	usd
CY2022	us-gaap	Interest Expense Debt InterestExpenseDebt	58062000	usd
CY2021	us-gaap	Interest Expense Debt InterestExpenseDebt	54339000	usd
CY2023	us-gaap	Net Periodic Defined Benefits Expense Reversal Of Expense Excluding Service Cost Component NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent	1230000	usd
CY2022	us-gaap	Net Periodic Defined Benefits Expense Reversal Of Expense Excluding Service Cost Component NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent	-5023000	usd
CY2021	us-gaap	Net Periodic Defined Benefits Expense Reversal Of Expense Excluding Service Cost Component NetPeriodicDefinedBenefitsExpenseReversalOfExpenseExcludingServiceCostComponent	-1330000	usd
CY2023	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	8882000	usd
CY2022	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	4385000	usd
CY2021	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	10697000	usd
CY2023	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	90943000	usd
CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	82324000	usd
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	68847000	usd
CY2023	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	5956000	usd
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	8496000	usd
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	8369000	usd
CY2023	us-gaap	Net Income Loss NetIncomeLoss	84987000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	73828000	usd
CY2021	us-gaap	Net Income Loss NetIncomeLoss	60478000	usd
CY2023	us-gaap	Other Comprehensive Income Availableforsale Securities Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent	166000	usd
CY2022	us-gaap	Other Comprehensive Income Availableforsale Securities Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent	-188000	usd
CY2021	us-gaap	Other Comprehensive Income Availableforsale Securities Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent	68000	usd
CY2023	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	530000	usd
CY2022	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	-511000	usd
CY2021	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	185000	usd
CY2023	us-gaap	Other Comprehensive Income Defined Benefit Plans Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent	-80000	usd
CY2022	us-gaap	Other Comprehensive Income Defined Benefit Plans Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent	-793000	usd
CY2021	us-gaap	Other Comprehensive Income Defined Benefit Plans Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent	-264000	usd
CY2023	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	216000	usd
CY2022	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	-2151000	usd
CY2021	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	-716000	usd
CY2023	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	85301000	usd
CY2022	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	75468000	usd
CY2021	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	61379000	usd
CY2023	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.69
CY2022	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.44
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.04
CY2023	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.68
CY2022	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.43
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.03
CY2023	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	31575197	shares
CY2022	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	30304557	shares
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	29601284	shares
CY2023	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	31663274	shares
CY2022	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	30423735	shares
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	29735533	shares
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	917160000	usd
CY2021	us-gaap	Net Income Loss NetIncomeLoss	60478000	usd
CY2021	us-gaap	Other Comprehensive Income Availableforsale Securities Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent	68000	usd
CY2021	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	185000	usd
CY2021	us-gaap	Other Comprehensive Income Defined Benefit Plans Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent	-264000	usd
CY2021	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	-716000	usd
CY2021	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	91029000	usd
CY2021	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	1.36
CY2021	us-gaap	Dividends Dividends	40137000	usd
CY2021	sjw	Increase Decrease In Accrued Groundwater Extraction Charges Purchased Water And Power IncreaseDecreaseInAccruedGroundwaterExtractionChargesPurchasedWaterAndPower	-1984000	usd
CY2021Q4	us-gaap	Stockholders Equity StockholdersEquity	1034519000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	73828000	usd
CY2022	us-gaap	Other Comprehensive Income Availableforsale Securities Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent	-188000	usd
CY2022	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	-511000	usd
CY2022	us-gaap	Other Comprehensive Income Defined Benefit Plans Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent	-793000	usd
CY2022	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	-2151000	usd
CY2022	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	4641000	usd
CY2022	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	-1354000	usd
CY2022	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	2091000	usd
CY2022	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	39085000	usd
CY2022	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	1.44
CY2022	us-gaap	Dividends Dividends	43582000	usd
CY2022Q4	us-gaap	Stockholders Equity StockholdersEquity	1110868000	usd
CY2023	us-gaap	Net Income Loss NetIncomeLoss	84987000	usd
CY2023	us-gaap	Other Comprehensive Income Availableforsale Securities Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent	166000	usd
CY2023	us-gaap	Other Comprehensive Income Availableforsale Securities Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentNetOfTaxPortionAttributableToParent	530000	usd
CY2023	us-gaap	Other Comprehensive Income Defined Benefit Plans Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansTaxPortionAttributableToParent	-80000	usd
CY2023	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPortionAttributableToParent	216000	usd
CY2023	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	4592000	usd
CY2023	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	-2259000	usd
CY2023	us-gaap	Stock Issued During Period Value Employee Stock Purchase Plan StockIssuedDuringPeriodValueEmployeeStockPurchasePlan	2141000	usd
CY2023	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	80659000	usd
CY2023	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	1.52
CY2023	us-gaap	Dividends Dividends	47905000	usd
CY2023Q4	us-gaap	Stockholders Equity StockholdersEquity	1233397000	usd
CY2023	us-gaap	Net Income Loss NetIncomeLoss	84987000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	73828000	usd
CY2021	us-gaap	Net Income Loss NetIncomeLoss	60478000	usd
CY2023	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	108138000	usd
CY2022	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	106439000	usd
CY2021	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	96474000	usd
CY2023	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-8510000	usd
CY2022	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-3244000	usd
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-2851000	usd
CY2023	us-gaap	Share Based Compensation ShareBasedCompensation	4647000	usd
CY2022	us-gaap	Share Based Compensation ShareBasedCompensation	4791000	usd
CY2021	us-gaap	Share Based Compensation ShareBasedCompensation	4246000	usd
CY2023	us-gaap	Public Utilities Allowance For Funds Used During Construction Additions PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions	2114000	usd
CY2022	us-gaap	Public Utilities Allowance For Funds Used During Construction Additions PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions	1551000	usd
CY2021	us-gaap	Public Utilities Allowance For Funds Used During Construction Additions PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions	1926000	usd
CY2023	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	0	usd
CY2022	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	0	usd
CY2021	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	2211000	usd
CY2023	sjw	Gain Loss On Disposition Of Property Plant Equipment Excluding Oil And Gas Property And Timber Property And On Sale Of Investment Real Estate GainLossOnDispositionOfPropertyPlantEquipmentExcludingOilAndGasPropertyAndTimberPropertyAndOnSaleOfInvestmentRealEstate	0	usd
CY2022	sjw	Gain Loss On Disposition Of Property Plant Equipment Excluding Oil And Gas Property And Timber Property And On Sale Of Investment Real Estate GainLossOnDispositionOfPropertyPlantEquipmentExcludingOilAndGasPropertyAndTimberPropertyAndOnSaleOfInvestmentRealEstate	6197000	usd
CY2021	sjw	Gain Loss On Disposition Of Property Plant Equipment Excluding Oil And Gas Property And Timber Property And On Sale Of Investment Real Estate GainLossOnDispositionOfPropertyPlantEquipmentExcludingOilAndGasPropertyAndTimberPropertyAndOnSaleOfInvestmentRealEstate	11421000	usd
CY2023	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	10869000	usd
CY2022	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	8222000	usd
CY2021	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	5931000	usd
CY2023	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	492000	usd
CY2022	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-1388000	usd
CY2021	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	4843000	usd
CY2023	sjw	Increase Decrease In Accrued Groundwater Extraction Charges Purchased Water And Power IncreaseDecreaseInAccruedGroundwaterExtractionChargesPurchasedWaterAndPower	4772000	usd
CY2022	sjw	Increase Decrease In Accrued Groundwater Extraction Charges Purchased Water And Power IncreaseDecreaseInAccruedGroundwaterExtractionChargesPurchasedWaterAndPower	2507000	usd
CY2022	us-gaap	Increase Decrease In Accrued Taxes Payable IncreaseDecreaseInAccruedTaxesPayable	-11954000	usd
CY2021	us-gaap	Increase Decrease In Accrued Taxes Payable IncreaseDecreaseInAccruedTaxesPayable	-6416000	usd
CY2022	us-gaap	Increase Decrease In Pension And Postretirement Obligations IncreaseDecreaseInPensionAndPostretirementObligations	-7108000	usd
CY2021	us-gaap	Increase Decrease In Pension And Postretirement Obligations IncreaseDecreaseInPensionAndPostretirementObligations	-4312000	usd
CY2023	sjw	Increase Decrease To Regulatory Asset And Liabilities Excluding Income Tax Temporary Differences Net And Postretirement Benefits IncreaseDecreaseToRegulatoryAssetAndLiabilitiesExcludingIncomeTaxTemporaryDifferencesNetAndPostretirementBenefits	-12278000	usd
CY2022	sjw	Increase Decrease To Regulatory Asset And Liabilities Excluding Income Tax Temporary Differences Net And Postretirement Benefits IncreaseDecreaseToRegulatoryAssetAndLiabilitiesExcludingIncomeTaxTemporaryDifferencesNetAndPostretirementBenefits	-1714000	usd
CY2021	sjw	Increase Decrease To Regulatory Asset And Liabilities Excluding Income Tax Temporary Differences Net And Postretirement Benefits IncreaseDecreaseToRegulatoryAssetAndLiabilitiesExcludingIncomeTaxTemporaryDifferencesNetAndPostretirementBenefits	14629000	usd
CY2023	sjw	Increase Decrease In Other Noncurrent Assets And Liabilities IncreaseDecreaseInOtherNoncurrentAssetsAndLiabilities	-20756000	usd
CY2022	sjw	Increase Decrease In Other Noncurrent Assets And Liabilities IncreaseDecreaseInOtherNoncurrentAssetsAndLiabilities	-17923000	usd
CY2021	sjw	Increase Decrease In Other Noncurrent Assets And Liabilities IncreaseDecreaseInOtherNoncurrentAssetsAndLiabilities	-13381000	usd
CY2023	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-218000	usd
CY2022	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	1339000	usd
CY2021	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	2123000	usd
CY2023	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	190831000	usd
CY2022	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	166199000	usd
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	130040000	usd
CY2023	sjw	Payments To Acquire Water Systems Using Company Funds PaymentsToAcquireWaterSystemsUsingCompanyFunds	271772000	usd
CY2022	sjw	Payments To Acquire Water Systems Using Company Funds PaymentsToAcquireWaterSystemsUsingCompanyFunds	218784000	usd
CY2021	sjw	Payments To Acquire Water Systems Using Company Funds PaymentsToAcquireWaterSystemsUsingCompanyFunds	233933000	usd
CY2023	sjw	Payments To Acquire Water Systems Using Contributions In Aid Of Construction PaymentsToAcquireWaterSystemsUsingContributionsInAidOfConstruction	16855000	usd
CY2022	sjw	Payments To Acquire Water Systems Using Contributions In Aid Of Construction PaymentsToAcquireWaterSystemsUsingContributionsInAidOfConstruction	22935000	usd
CY2021	sjw	Payments To Acquire Water Systems Using Contributions In Aid Of Construction PaymentsToAcquireWaterSystemsUsingContributionsInAidOfConstruction	17096000	usd
CY2023	sjw	Payments To Acquire Nonutility Assets PaymentsToAcquireNonutilityAssets	24244000	usd
CY2022	sjw	Payments To Acquire Nonutility Assets PaymentsToAcquireNonutilityAssets	631000	usd
CY2021	sjw	Payments To Acquire Nonutility Assets PaymentsToAcquireNonutilityAssets	826000	usd
CY2023	us-gaap	Payments To Acquire Businesses Gross PaymentsToAcquireBusinessesGross	7537000	usd
CY2022	us-gaap	Payments To Acquire Businesses Gross PaymentsToAcquireBusinessesGross	433000	usd
CY2021	us-gaap	Payments To Acquire Businesses Gross PaymentsToAcquireBusinessesGross	23587000	usd
CY2023	us-gaap	Payments For Proceeds From Removal Costs PaymentsForProceedsFromRemovalCosts	2097000	usd
CY2022	us-gaap	Payments For Proceeds From Removal Costs PaymentsForProceedsFromRemovalCosts	2520000	usd
CY2021	us-gaap	Payments For Proceeds From Removal Costs PaymentsForProceedsFromRemovalCosts	2781000	usd
CY2023	sjw	Proceeds From Sale Of Property Held For Sale And From Sale Of Real Estate Investments ProceedsFromSaleOfPropertyHeldForSaleAndFromSaleOfRealEstateInvestments	0	usd
CY2022	sjw	Proceeds From Sale Of Property Held For Sale And From Sale Of Real Estate Investments ProceedsFromSaleOfPropertyHeldForSaleAndFromSaleOfRealEstateInvestments	975000	usd
CY2021	sjw	Proceeds From Sale Of Property Held For Sale And From Sale Of Real Estate Investments ProceedsFromSaleOfPropertyHeldForSaleAndFromSaleOfRealEstateInvestments	18228000	usd
CY2023	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-233000	usd
CY2022	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	0	usd
CY2021	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	0	usd
CY2023	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-322272000	usd
CY2022	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-244328000	usd
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-259995000	usd
CY2023	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	146415000	usd
CY2022	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	158779000	usd
CY2021	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	96625000	usd
CY2023	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	134493000	usd
CY2022	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	62197000	usd
CY2021	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	208722000	usd
CY2023	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	70000000	usd
CY2022	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	55000000	usd
CY2021	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	247000000	usd
CY2023	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	4347000	usd
CY2022	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	89177000	usd
CY2021	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	76113000	usd
CY2023	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	47905000	usd
CY2022	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	43582000	usd
CY2021	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	40137000	usd
CY2023	sjw	Receipts Of Advances And Contributions In Aid Of Construction ReceiptsOfAdvancesAndContributionsInAidOfConstruction	22425000	usd
CY2022	sjw	Receipts Of Advances And Contributions In Aid Of Construction ReceiptsOfAdvancesAndContributionsInAidOfConstruction	23820000	usd
CY2021	sjw	Receipts Of Advances And Contributions In Aid Of Construction ReceiptsOfAdvancesAndContributionsInAidOfConstruction	26438000	usd
CY2023	sjw	Repayments Of Advances For Construction Financing Activities RepaymentsOfAdvancesForConstructionFinancingActivities	2763000	usd
CY2022	sjw	Repayments Of Advances For Construction Financing Activities RepaymentsOfAdvancesForConstructionFinancingActivities	2859000	usd
CY2021	sjw	Repayments Of Advances For Construction Financing Activities RepaymentsOfAdvancesForConstructionFinancingActivities	2852000	usd
CY2023	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	80659000	usd
CY2022	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	39085000	usd
CY2021	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	91028000	usd
CY2023	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-1171000	usd
CY2022	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-515000	usd
CY2021	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-462000	usd
CY2023	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	128820000	usd
CY2022	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	78354000	usd
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	132805000	usd
CY2023	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	-2621000	usd
CY2022	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	225000	usd
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	2850000	usd
CY2022Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	12344000	usd
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	12119000	usd
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	9269000	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
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	12119000	usd
CY2023Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	0	usd
CY2022Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	0	usd
CY2021Q4	us-gaap	Restricted Cash And Cash Equivalents RestrictedCashAndCashEquivalents	1211000	usd
CY2023Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	9723000	usd
CY2022Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	12344000	usd
CY2021Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	10908000	usd
CY2023	us-gaap	Interest Paid Net InterestPaidNet	67508000	usd
CY2022	us-gaap	Interest Paid Net InterestPaidNet	63677000	usd
CY2021	us-gaap	Interest Paid Net InterestPaidNet	58175000	usd
CY2023	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	23020000	usd
CY2022	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	6853000	usd
CY2021	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	8466000	usd
CY2023	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	35904000	usd
CY2022	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	22561000	usd
CY2021	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	20579000	usd
CY2023	sjw	Utility Property Installed By Developer UtilityPropertyInstalledByDeveloper	3341000	usd
CY2022	sjw	Utility Property Installed By Developer UtilityPropertyInstalledByDeveloper	2433000	usd
CY2021	sjw	Utility Property Installed By Developer UtilityPropertyInstalledByDeveloper	2659000	usd
CY2023	sjw	Seller Financing In Asset Acquisition Net Of Discount SellerFinancingInAssetAcquisitionNetOfDiscount	15400000	usd
CY2022	sjw	Seller Financing In Asset Acquisition Net Of Discount SellerFinancingInAssetAcquisitionNetOfDiscount	0	usd
CY2021	sjw	Seller Financing In Asset Acquisition Net Of Discount SellerFinancingInAssetAcquisitionNetOfDiscount	0	usd
CY2023	sjw	Variable Interest Entities Number Of Entities VariableInterestEntitiesNumberOfEntities	1	entity
CY2023	us-gaap	Use Of Estimates UseOfEstimates	<div style="margin-top:8pt;text-indent:31.5pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">Use of Estimates</span></div><div style="margin-top:6pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">The preparation of the consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.</span></div>
CY2023Q4	sjw	Public Utilities Property Plant And Equipment Source Of Supply PublicUtilitiesPropertyPlantAndEquipmentSourceOfSupply	207537000	usd
CY2022Q4	sjw	Public Utilities Property Plant And Equipment Source Of Supply PublicUtilitiesPropertyPlantAndEquipmentSourceOfSupply	191082000	usd
CY2023Q4	sjw	Public Utilities Property Plant And Equipment Pumping Plant PublicUtilitiesPropertyPlantAndEquipmentPumpingPlant	284308000	usd
CY2022Q4	sjw	Public Utilities Property Plant And Equipment Pumping Plant PublicUtilitiesPropertyPlantAndEquipmentPumpingPlant	269246000	usd
CY2023Q4	sjw	Public Utilities Property Plant And Equipment Water Treatment Plant PublicUtilitiesPropertyPlantAndEquipmentWaterTreatmentPlant	354617000	usd
CY2022Q4	sjw	Public Utilities Property Plant And Equipment Water Treatment Plant PublicUtilitiesPropertyPlantAndEquipmentWaterTreatmentPlant	327492000	usd
CY2023Q4	us-gaap	Public Utilities Property Plant And Equipment Transmission And Distribution PublicUtilitiesPropertyPlantAndEquipmentTransmissionAndDistribution	2820358000	usd
CY2022Q4	us-gaap	Public Utilities Property Plant And Equipment Transmission And Distribution PublicUtilitiesPropertyPlantAndEquipmentTransmissionAndDistribution	2615640000	usd
CY2023Q4	sjw	Public Utilities Property Plant And Equipment General Plant PublicUtilitiesPropertyPlantAndEquipmentGeneralPlant	301091000	usd
CY2022Q4	sjw	Public Utilities Property Plant And Equipment General Plant PublicUtilitiesPropertyPlantAndEquipmentGeneralPlant	257825000	usd
CY2023Q4	sjw	Public Utilities Property Plant And Equipment Depreciable Plant And Equipment PublicUtilitiesPropertyPlantAndEquipmentDepreciablePlantAndEquipment	3967911000	usd
CY2022Q4	sjw	Public Utilities Property Plant And Equipment Depreciable Plant And Equipment PublicUtilitiesPropertyPlantAndEquipmentDepreciablePlantAndEquipment	3661285000	usd
CY2023	us-gaap	Public Utilities Property Plant And Equipment Disclosure Of Composite Depreciation Rate For Plants In Service PublicUtilitiesPropertyPlantAndEquipmentDisclosureOfCompositeDepreciationRateForPlantsInService	0.029
CY2022	us-gaap	Public Utilities Property Plant And Equipment Disclosure Of Composite Depreciation Rate For Plants In Service PublicUtilitiesPropertyPlantAndEquipmentDisclosureOfCompositeDepreciationRateForPlantsInService	0.033
CY2021	us-gaap	Public Utilities Property Plant And Equipment Disclosure Of Composite Depreciation Rate For Plants In Service PublicUtilitiesPropertyPlantAndEquipmentDisclosureOfCompositeDepreciationRateForPlantsInService	0.032
CY2023	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	2900000	usd
CY2022	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	4703000	usd
CY2021	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	4422000	usd
CY2023	sjw	Equity Funds Capitalized EquityFundsCapitalized	2114000	usd
CY2022	sjw	Equity Funds Capitalized EquityFundsCapitalized	1551000	usd
CY2021	sjw	Equity Funds Capitalized EquityFundsCapitalized	1926000	usd
CY2023Q4	us-gaap	Land Land	4137000	usd
CY2022Q4	us-gaap	Land Land	12615000	usd
CY2023Q4	sjw	Wholesale Water Supply Assets WholesaleWaterSupplyAssets	8465000	usd
CY2022Q4	sjw	Wholesale Water Supply Assets WholesaleWaterSupplyAssets	0	usd
CY2023Q4	us-gaap	Investment Building And Building Improvements InvestmentBuildingAndBuildingImprovements	748000	usd
CY2022Q4	us-gaap	Investment Building And Building Improvements InvestmentBuildingAndBuildingImprovements	45418000	usd
CY2023Q4	us-gaap	Real Estate Investment Property At Cost RealEstateInvestmentPropertyAtCost	13350000	usd
CY2022Q4	us-gaap	Real Estate Investment Property At Cost RealEstateInvestmentPropertyAtCost	58033000	usd
CY2023Q4	us-gaap	Real Estate Investment Property Accumulated Depreciation RealEstateInvestmentPropertyAccumulatedDepreciation	194000	usd
CY2022Q4	us-gaap	Real Estate Investment Property Accumulated Depreciation RealEstateInvestmentPropertyAccumulatedDepreciation	17158000	usd
CY2023Q4	us-gaap	Real Estate Investment Property Net RealEstateInvestmentPropertyNet	13156000	usd
CY2022Q4	us-gaap	Real Estate Investment Property Net RealEstateInvestmentPropertyNet	40875000	usd
CY2021Q2	sjw	Sales Agreement Holdback Amount SalesAgreementHoldbackAmount	3000000	usd
CY2021Q2	us-gaap	Gain Loss On Sale Of Properties GainLossOnSaleOfProperties	3000000	usd
CY2023Q4	us-gaap	Lessor Operating Lease Payments To Be Received Next Twelve Months LessorOperatingLeasePaymentsToBeReceivedNextTwelveMonths	4758000	usd
CY2023Q4	us-gaap	Lessor Operating Lease Payments To Be Received Two Years LessorOperatingLeasePaymentsToBeReceivedTwoYears	5063000	usd
CY2023Q4	us-gaap	Lessor Operating Lease Payments To Be Received Three Years LessorOperatingLeasePaymentsToBeReceivedThreeYears	5290000	usd
CY2023Q4	us-gaap	Lessor Operating Lease Payments To Be Received Four Years LessorOperatingLeasePaymentsToBeReceivedFourYears	3990000	usd
CY2023Q4	us-gaap	Lessor Operating Lease Payments To Be Received Five Years LessorOperatingLeasePaymentsToBeReceivedFiveYears	1679000	usd
CY2023Q4	us-gaap	Lessor Operating Lease Payments To Be Received Thereafter LessorOperatingLeasePaymentsToBeReceivedThereafter	0	usd
CY2023	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	0	usd
CY2022	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	0	usd
CY2021	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	2211000	usd
CY2022	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	usd
CY2023	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	usd
CY2021	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	usd
CY2023Q4	us-gaap	Life Insurance Corporate Or Bank Owned Amount LifeInsuranceCorporateOrBankOwnedAmount	8220000	usd
CY2022Q4	us-gaap	Life Insurance Corporate Or Bank Owned Amount LifeInsuranceCorporateOrBankOwnedAmount	7342000	usd
CY2023Q4	us-gaap	Cash Surrender Value Of Life Insurance CashSurrenderValueOfLifeInsurance	3937000	usd
CY2022Q4	us-gaap	Cash Surrender Value Of Life Insurance CashSurrenderValueOfLifeInsurance	3420000	usd
CY2023Q4	sjw	Advances For Construction Estimated Refunds Next Twelve Months AdvancesForConstructionEstimatedRefundsNextTwelveMonths	3034000	usd
CY2023Q4	sjw	Advances For Construction Estimated Refunds Year Two AdvancesForConstructionEstimatedRefundsYearTwo	2970000	usd
CY2023Q4	sjw	Advances For Construction Estimated Refunds Year Three AdvancesForConstructionEstimatedRefundsYearThree	2878000	usd
CY2023Q4	sjw	Advances For Construction Estimated Refunds Year Four AdvancesForConstructionEstimatedRefundsYearFour	2793000	usd
CY2023Q4	sjw	Advances For Construction Estimated Refunds Year Five AdvancesForConstructionEstimatedRefundsYearFive	2726000	usd
CY2023Q4	sjw	Advances For Construction Estimated Refunds After Year Five AdvancesForConstructionEstimatedRefundsAfterYearFive	46574000	usd
CY2023Q4	us-gaap	Contract With Customer Liability Noncurrent ContractWithCustomerLiabilityNoncurrent	146582000	usd
CY2023Q4	sjw	Customer Advancesfor Construction Non Refundable CustomerAdvancesforConstructionNonRefundable	55170000	usd
CY2023Q4	sjw	Customer Advancesfor Construction Refundedon Service Connections CustomerAdvancesforConstructionRefundedonServiceConnections	30437000	usd
CY2023	sjw	Contract With Customer Refund Liability Refund Period ContractWithCustomerRefundLiabilityRefundPeriod	P40Y
CY2023Q4	sjw	Contract With Customer Refund Liability Fair Value Disclosure ContractWithCustomerRefundLiabilityFairValueDisclosure	40915000	usd
CY2022Q4	sjw	Contract With Customer Refund Liability Fair Value Disclosure ContractWithCustomerRefundLiabilityFairValueDisclosure	44715000	usd
CY2023	sjw	Advances For Construction Deferred Taxes Amortization Period AdvancesForConstructionDeferredTaxesAmortizationPeriod	P40Y
CY2023Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	4198000	usd
CY2022Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	4426000	usd
CY2023Q4	sjw	Asset Retirement Obligation Discount Rate AssetRetirementObligationDiscountRate	0.06
CY2022Q4	sjw	Asset Retirement Obligation Discount Rate AssetRetirementObligationDiscountRate	0.06
CY2023Q4	us-gaap	Asset Retirement Obligation Legally Restricted Assets Fair Value AssetRetirementObligationLegallyRestrictedAssetsFairValue	862000	usd
CY2022Q4	us-gaap	Asset Retirement Obligation Legally Restricted Assets Fair Value AssetRetirementObligationLegallyRestrictedAssetsFairValue	920000	usd
CY2023	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	678168000	usd
CY2022	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	586918000	usd
CY2021	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	559568000	usd
CY2023	sjw	Alternative Revenue Programs Net AlternativeRevenueProgramsNet	3634000	usd
CY2022	sjw	Alternative Revenue Programs Net AlternativeRevenueProgramsNet	-1312000	usd
CY2021	sjw	Alternative Revenue Programs Net AlternativeRevenueProgramsNet	5304000	usd
CY2023	sjw	Regulatory Balancing Memorandum Accounts Revenue And Regulatory Mechanisms Net RegulatoryBalancingMemorandumAccountsRevenueAndRegulatoryMechanismsNet	-17123000	usd
CY2022	sjw	Regulatory Balancing Memorandum Accounts Revenue And Regulatory Mechanisms Net RegulatoryBalancingMemorandumAccountsRevenueAndRegulatoryMechanismsNet	29487000	usd
CY2021	sjw	Regulatory Balancing Memorandum Accounts Revenue And Regulatory Mechanisms Net RegulatoryBalancingMemorandumAccountsRevenueAndRegulatoryMechanismsNet	3435000	usd
CY2023	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	5684000	usd
CY2022	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	5605000	usd
CY2021	us-gaap	Operating Lease Lease Income OperatingLeaseLeaseIncome	5379000	usd
CY2023	us-gaap	Revenues Revenues	670363000	usd
CY2022	us-gaap	Revenues Revenues	620698000	usd
CY2021	us-gaap	Revenues Revenues	573686000	usd
CY2023	sjw	Regulated Operating Revenue Water Surcharge RegulatedOperatingRevenueWaterSurcharge	4085000	usd
CY2022	sjw	Regulated Operating Revenue Water Surcharge RegulatedOperatingRevenueWaterSurcharge	6121000	usd
CY2021	sjw	Regulated Operating Revenue Water Surcharge RegulatedOperatingRevenueWaterSurcharge	5691000	usd
CY2023	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	<div style="margin-top:8pt;text-indent:31.5pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:700;line-height:120%">Reclassifications</span></div><div style="margin-top:6pt"><span style="color:#000000;font-family:'Times New Roman',sans-serif;font-size:10pt;font-weight:400;line-height:120%">Certain reclassifications have been made to prior periods in the Consolidated Financial Statements and Notes to conform to the current presentation.</span></div>
CY2023Q4	sjw	Regulatory Balancingand Memorandum Accounts Review Authorized Revenue Threshold Percentage RegulatoryBalancingandMemorandumAccountsReviewAuthorizedRevenueThresholdPercentage	0.02
CY2023Q4	us-gaap	Remaining Amounts Of Regulatory Assets For Which No Return On Investment During Recovery Period Is Provided RemainingAmountsOfRegulatoryAssetsForWhichNoReturnOnInvestmentDuringRecoveryPeriodIsProvided	43141000	usd
CY2022Q4	us-gaap	Remaining Amounts Of Regulatory Assets For Which No Return On Investment During Recovery Period Is Provided RemainingAmountsOfRegulatoryAssetsForWhichNoReturnOnInvestmentDuringRecoveryPeriodIsProvided	66373000	usd
CY2023Q4	us-gaap	Regulatory Assets RegulatoryAssets	240186000	usd
CY2022Q4	us-gaap	Regulatory Assets RegulatoryAssets	265775000	usd
CY2023Q4	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	4276000	usd
CY2022Q4	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	19740000	usd
CY2023Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	235910000	usd
CY2022Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	246035000	usd
CY2023Q4	us-gaap	Regulatory Liabilities RegulatoryLiabilities	464167000	usd
CY2022Q4	us-gaap	Regulatory Liabilities RegulatoryLiabilities	122432000	usd
CY2023Q4	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	3059000	usd
CY2022Q4	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	3672000	usd
CY2023Q4	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	461108000	usd
CY2022Q4	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	118760000	usd
CY2023Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	70000000	shares
CY2022Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	70000000	shares
CY2023Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.001
CY2022Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.001
CY2023Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	32023004	shares
CY2023Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	32023004	shares
CY2022Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	30801912	shares
CY2022Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	30801912	shares
CY2023Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	1000000	shares
CY2022Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	1000000	shares
CY2023Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.001
CY2022Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.001
CY2022Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2022Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2023Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	0	shares
CY2023Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2021Q1	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.001
CY2021Q1	us-gaap	Sale Of Stock Price Per Share SaleOfStockPricePerShare	59.00
CY2023Q4	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.0648
CY2022Q4	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.0540
CY2023Q4	us-gaap	Long Term Debt LongTermDebt	1583441000	usd
CY2022Q4	us-gaap	Long Term Debt LongTermDebt	1488788000	usd
CY2023Q4	us-gaap	Debt Instrument Unamortized Premium DebtInstrumentUnamortizedPremium	1583000	usd
CY2022Q4	us-gaap	Debt Instrument Unamortized Premium DebtInstrumentUnamortizedPremium	17396000	usd
CY2023Q4	us-gaap	Unamortized Debt Issuance Expense UnamortizedDebtIssuanceExpense	9350000	usd
CY2022Q4	us-gaap	Unamortized Debt Issuance Expense UnamortizedDebtIssuanceExpense	9859000	usd
CY2023Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	48975000	usd
CY2022Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	4360000	usd
CY2023Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	1526699000	usd
CY2022Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	1491965000	usd
CY2023Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	23740000	usd
CY2023Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	2995000	usd
CY2023Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	44486000	usd
CY2023Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	1459597000	usd
CY2023Q4	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	1394412000	usd
CY2022Q4	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	1294354000	usd
CY2023Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	48975000	usd
CY2023Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	3648000	usd
CY2023	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	10185000	usd
CY2022	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	8570000	usd
CY2021	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	8587000	usd
CY2023	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	4281000	usd
CY2022	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	3170000	usd
CY2021	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	2633000	usd
CY2023	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-8871000	usd
CY2022	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-3223000	usd
CY2021	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-3811000	usd
CY2023	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	361000	usd
CY2022	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-21000	usd
CY2021	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	960000	usd
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	8496000	usd
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	8369000	usd
CY2023	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	90943000	usd
CY2022	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	82324000	usd
CY2021	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	68847000	usd
CY2023	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	19098000	usd
CY2022	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	17288000	usd
CY2021	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	14458000	usd
CY2023	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	6001000	usd
CY2022	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	5328000	usd
CY2021	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	4572000	usd
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CY2023	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1310000	usd
CY2022	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	3869000	usd
CY2021	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1553000	usd
CY2023Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	1310000	usd
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CY2023Q4	us-gaap	Other Intangible Assets Net OtherIntangibleAssetsNet	28386000	usd
CY2022Q4	us-gaap	Other Intangible Assets Net OtherIntangibleAssetsNet	0	usd
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CY2023Q4	us-gaap	Cash Surrender Value Of Life Insurance CashSurrenderValueOfLifeInsurance	3937000	usd
CY2022Q4	us-gaap	Cash Surrender Value Of Life Insurance CashSurrenderValueOfLifeInsurance	3420000	usd
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CY2023	us-gaap	Deferred Compensation Arrangement With Individual Contributions By Employer DeferredCompensationArrangementWithIndividualContributionsByEmployer	3902000	usd
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CY2021	us-gaap	Deferred Compensation Arrangement With Individual Contributions By Employer DeferredCompensationArrangementWithIndividualContributionsByEmployer	2822000	usd
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CY2023	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	4647000	usd
CY2022	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	4791000	usd
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CY2023	sjw	Sharebased Compensation Arrangementby Sharebased Payment Award Equity Instruments Otherthan Options Vested Grant Date Fair Value SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsVestedGrantDateFairValue	4170000	usd
CY2022	sjw	Sharebased Compensation Arrangementby Sharebased Payment Award Equity Instruments Otherthan Options Vested Grant Date Fair Value SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsVestedGrantDateFairValue	4369000	usd
CY2021	sjw	Sharebased Compensation Arrangementby Sharebased Payment Award Equity Instruments Otherthan Options Vested Grant Date Fair Value SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsVestedGrantDateFairValue	3332000	usd
CY2023	sjw	Restricted Stock Awards Performancebased Issued Intrinsic Value RestrictedStockAwardsPerformancebasedIssuedIntrinsicValue	15955	shares
CY2022	sjw	Restricted Stock Awards Performancebased Issued Intrinsic Value RestrictedStockAwardsPerformancebasedIssuedIntrinsicValue	11551	shares
CY2021	sjw	Restricted Stock Awards Performancebased Issued Intrinsic Value RestrictedStockAwardsPerformancebasedIssuedIntrinsicValue	7327	shares
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CY2023Q4	sjw	Restricted Stock Awards Performancebased Outstanding Balance RestrictedStockAwardsPerformancebasedOutstandingBalance	61763	shares
CY2023	us-gaap	Stock Issued During Period Shares Employee Stock Purchase Plans StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans	34122	shares
CY2022	us-gaap	Stock Issued During Period Shares Employee Stock Purchase Plans StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans	36585	shares
CY2021	us-gaap	Stock Issued During Period Shares Employee Stock Purchase Plans StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans	35304	shares
CY2023	sjw	Number Of Subsidiaries NumberOfSubsidiaries	4	subsidiary
CY2023	us-gaap	Revenues Revenues	670363000	usd
CY2023	us-gaap	Utilities Operating Expense UtilitiesOperatingExpense	520928000	usd
CY2023	us-gaap	Operating Income Loss OperatingIncomeLoss	149435000	usd
CY2023	us-gaap	Net Income Loss NetIncomeLoss	84987000	usd
CY2023	us-gaap	Utilities Operating Expense Depreciation And Amortization UtilitiesOperatingExpenseDepreciationAndAmortization	105868000	usd
CY2023	us-gaap	Interest Expense InterestExpense	66144000	usd
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CY2022	us-gaap	Operating Income Loss OperatingIncomeLoss	130978000	usd
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CY2022	us-gaap	Utilities Operating Expense Depreciation And Amortization UtilitiesOperatingExpenseDepreciationAndAmortization	104417000	usd
CY2022	us-gaap	Interest Expense InterestExpense	58062000	usd
CY2022	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	8496000	usd
CY2021	us-gaap	Revenues Revenues	573686000	usd
CY2021	us-gaap	Utilities Operating Expense UtilitiesOperatingExpense	462527000	usd
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CY2021	us-gaap	Interest Expense InterestExpense	54339000	usd
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	8369000	usd
CY2023Q4	us-gaap	Assets Assets	4345067000	usd
CY2022Q4	us-gaap	Assets Assets	3755056000	usd
CY2023Q4	us-gaap	Assets Assets	4345067000	usd
CY2022Q4	us-gaap	Assets Assets	3755056000	usd
CY2022Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.001
CY2023Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.001
CY2022Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	70000000	shares
CY2023Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	70000000	shares
CY2023Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	32023004	shares
CY2023Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	32023004	shares
CY2022Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	30801912	shares
CY2022Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	30801912	shares
CY2023	us-gaap	Net Income Loss NetIncomeLoss	84987000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	73828000	usd
CY2021	us-gaap	Net Income Loss NetIncomeLoss	60478000	usd
CY2023	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	314000	usd
CY2022	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	1640000	usd
CY2021	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	901000	usd
CY2023	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	85301000	usd
CY2022	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	75468000	usd
CY2021	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	61379000	usd
CY2023	us-gaap	Net Income Loss NetIncomeLoss	84987000	usd
CY2022	us-gaap	Net Income Loss NetIncomeLoss	73828000	usd
CY2021	us-gaap	Net Income Loss NetIncomeLoss	60478000	usd
CY2023Q4	sjw	Restricted Net Assets Subsidiaries RestrictedNetAssetsSubsidiaries	408244000	usd
CY2023Q4	sjw	Restricted Net Assets Subsidiaries Percent Of Consolidated Assets RestrictedNetAssetsSubsidiariesPercentOfConsolidatedAssets	0.33
CY2023	dei	Auditor Firm AuditorFirmId	34
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$SJW
SJW GROUP Stock $sjw

2024 Q1 Form 10-K Financial Statement

#000076682924000023 Filed on February 23, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$SJW SJW GROUP Stock $sjw

2024 Q1 Form 10-K Financial Statement

#000076682924000023 Filed on February 23, 2024

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$SJW
SJW GROUP Stock $sjw