$CWT
CALIFORNIA WATER SERVICE GROUP Stock $cwt

$cwt Overview Financials Valuation SEC Filings Company Website

2020 Q3 Form 10-Q Financial Statement

#000103520120000010 Filed on November 06, 2020

Income Statement

Concept	2020 Q3	2020 Q2	2019 Q4
Revenue	$222.5M	$172.5M	$176.9M
YoY Change	3.49%	3.0%	1.49%
Cost Of Revenue	$85.30M	$71.10M	$53.00M
YoY Change	5.83%	10.06%	14.22%
Gross Profit	$218.8M	$104.4M	$123.9M
YoY Change	44.04%	-8.74%	-3.13%
Gross Profit Margin	98.35%	60.52%	70.04%
Selling, General & Admin	$29.20M	$26.90M	$27.30M
YoY Change	8.96%	5.91%	15.68%
% of Gross Profit	13.35%	25.77%	22.03%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$25.30M	$25.20M	$22.80M
YoY Change	10.96%	10.53%	5.56%
% of Gross Profit	11.56%	24.14%	18.4%
Operating Expenses	$98.90M	$91.30M	$100.8M
YoY Change	12.13%	9.87%	8.62%
Operating Profit	$106.1M	$12.49M	$20.36M
YoY Change	105.68%	-53.75%	-23.29%
Interest Expense	-$10.50M	-$10.50M	-$10.50M
YoY Change	12.9%	-7.08%	16.67%
% of Operating Profit	-9.9%	-84.05%	-51.58%
Other Income/Expense, Net	$789.0K	$3.269M	$1.800M
YoY Change	630.56%	164.27%	-158.06%
Pretax Income	$110.4M	$6.700M	$14.50M
YoY Change	103.31%	-69.27%	-37.23%
Income Tax	$14.00M	$1.400M	$124.2M
% Of Pretax Income	12.68%	20.9%	856.55%
Net Earnings	$96.36M	$5.281M	$11.34M
YoY Change	127.14%	-68.93%	-26.24%
Net Earnings / Revenue	43.31%	3.06%	6.41%
Basic Earnings Per Share	$1.94	$0.11
Diluted Earnings Per Share	$1.94	$0.11	$0.24
COMMON SHARES
Basic Shares Outstanding	49.58M shares	48.94M shares
Diluted Shares Outstanding	49.58M shares	48.94M shares

Balance Sheet

Concept	2020 Q3	2020 Q2	2019 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments	$113.3M	$114.4M	$42.70M
YoY Change	120.86%	109.52%	-9.53%
Cash & Equivalents	$113.3M	$114.4M	$42.65M
Short-Term Investments
Other Short-Term Assets	$23.34M	$29.47M	$22.71M
YoY Change	5.13%	22.24%	22.31%
Inventory	$8.600M	$8.400M	$7.700M
Prepaid Expenses
Receivables	$53.40M	$46.09M	$32.06M
Other Receivables	$29.80M	$34.70M	$29.10M
Total Short-Term Assets	$305.8M	$266.9M	$184.7M
YoY Change	44.19%	29.54%	-2.11%
LONG-TERM ASSETS
Property, Plant & Equipment	$2.596B	$2.538B	$2.410B
YoY Change	10.12%	9.56%	7.94%
Goodwill	$30.35M	$31.13M	$2.959M
YoY Change	1060.57%	1090.52%	13.15%
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets	$89.57M	$83.11M	$84.29M
YoY Change	8.12%	3.72%	40.26%
Total Long-Term Assets	$3.201B	$3.093B	$2.927B
YoY Change	13.85%	12.13%	10.48%
TOTAL ASSETS
Total Short-Term Assets	$305.8M	$266.9M	$184.7M
Total Long-Term Assets	$3.201B	$3.093B	$2.927B
Total Assets	$3.506B	$3.360B	$3.111B
YoY Change	15.98%	13.34%	9.64%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$127.2M	$128.2M	$108.5M
YoY Change	17.1%	31.67%	13.48%
Accrued Expenses	$68.70M	$50.80M	$48.80M
YoY Change	18.24%	11.16%	12.44%
Deferred Revenue			$3.325M
YoY Change			4.04%
Short-Term Debt	$375.1M	$375.1M	$175.1M
YoY Change	141.84%	127.2%	168.97%
Long-Term Debt Due	$21.88M	$21.87M	$21.87M
YoY Change	314.45%	311.75%	-79.16%
Total Short-Term Liabilities	$603.8M	$577.6M	$358.7M
YoY Change	80.82%	74.28%	11.69%
LONG-TERM LIABILITIES
Long-Term Debt	$785.1M	$785.3M	$786.8M
YoY Change	-2.78%	-2.78%	10.81%
Other Long-Term Liabilities	$981.9M	$991.1M	$60.42M
YoY Change	9.73%	11.93%	33.53%
Total Long-Term Liabilities	$785.1M	$785.3M	$847.2M
YoY Change	-2.78%	-2.78%	12.17%
TOTAL LIABILITIES
Total Short-Term Liabilities	$603.8M	$577.6M	$358.7M
Total Long-Term Liabilities	$785.1M	$785.3M	$847.2M
Total Liabilities	$1.389B	$1.363B	$1.206B
YoY Change	21.68%	19.64%	12.03%
SHAREHOLDERS EQUITY
Retained Earnings	$467.3M	$381.4M	$417.1M
YoY Change	12.51%	-0.25%	6.4%
Common Stock	$422.9M	$400.6M	$362.8M
YoY Change	23.48%	17.55%	7.29%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$890.2M	$782.0M	$779.9M
YoY Change
Total Liabilities & Shareholders Equity	$3.506B	$3.360B	$3.111B
YoY Change	15.98%	13.34%	9.64%

Cashflow Statement

Concept	2020 Q3	2020 Q2	2019 Q4
OPERATING ACTIVITIES
Net Income	$96.36M	$5.281M	$11.34M
YoY Change	127.14%	-68.93%	-26.24%
Depreciation, Depletion And Amortization	$25.30M	$25.20M	$22.80M
YoY Change	10.96%	10.53%	5.56%
Cash From Operating Activities	$76.70M	$15.90M	$40.50M
YoY Change	-9.66%	-31.76%	-31.93%
INVESTING ACTIVITIES
Capital Expenditures	-$87.80M	-$68.20M	-$78.90M
YoY Change	20.27%	10.0%	34.18%
Acquisitions
YoY Change
Other Investing Activities	-$4.200M	-$37.70M	$0.00
YoY Change	90.91%
Cash From Investing Activities	-$91.90M	-$105.9M	-$78.80M
YoY Change	22.05%	70.81%	34.01%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	14.30M	63.90M	29.80M
YoY Change	-210.0%	93.64%	-249.0%
NET CHANGE
Cash From Operating Activities	76.70M	15.90M	40.50M
Cash From Investing Activities	-91.90M	-105.9M	-78.80M
Cash From Financing Activities	14.30M	63.90M	29.80M
Net Change In Cash	-900.0K	-26.10M	-8.500M
YoY Change	-73.53%	357.89%	-55.96%
FREE CASH FLOW
Cash From Operating Activities	$76.70M	$15.90M	$40.50M
Capital Expenditures	-$87.80M	-$68.20M	-$78.90M
Free Cash Flow	$164.5M	$84.10M	$119.4M
YoY Change	4.18%	-1.41%	0.93%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
	dei	Entity Central Index Key EntityCentralIndexKey	0001035201
	dei	Amendment Flag AmendmentFlag	false
	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2020
	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	Q3
	dei	Document Type DocumentType	10-Q
	dei	Document Quarterly Report DocumentQuarterlyReport	true
	dei	Document Period End Date DocumentPeriodEndDate	2020-09-30
	dei	Document Transition Report DocumentTransitionReport	false
	dei	Entity File Number EntityFileNumber	1-13883
	dei	Entity Registrant Name EntityRegistrantName	CALIFORNIA WATER SERVICE GROUP
	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	DE
	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	77-0448994
	dei	Entity Address Address Line1 EntityAddressAddressLine1	1720 North First Street
	dei	Entity Address City Or Town EntityAddressCityOrTown	San Jose
	dei	Entity Address State Or Province EntityAddressStateOrProvince	CA
	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	95112
	dei	City Area Code CityAreaCode	408
	dei	Local Phone Number LocalPhoneNumber	367-8200
	dei	Security12b Title Security12bTitle	Common Stock, $0.01 par value per share
	dei	Trading Symbol TradingSymbol	CWT
	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
CY2020Q3	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	49840000	shares
CY2020Q3	us-gaap	Public Utilities Property Plant And Equipment Plant In Service PublicUtilitiesPropertyPlantAndEquipmentPlantInService	3835194000	USD
CY2019Q4	us-gaap	Public Utilities Property Plant And Equipment Plant In Service PublicUtilitiesPropertyPlantAndEquipmentPlantInService	3550485000	USD
CY2020Q3	us-gaap	Public Utilities Property Plant And Equipment Accumulated Depreciation PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation	1238880000	USD
CY2019Q4	us-gaap	Public Utilities Property Plant And Equipment Accumulated Depreciation PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation	1144115000	USD
CY2020Q3	us-gaap	Public Utilities Property Plant And Equipment Net PublicUtilitiesPropertyPlantAndEquipmentNet	2596314000	USD
CY2019Q4	us-gaap	Public Utilities Property Plant And Equipment Net PublicUtilitiesPropertyPlantAndEquipmentNet	2406370000	USD
CY2020Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	113312000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	42653000	USD
CY2020Q3	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	53397000	USD
CY2019Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	32058000	USD
CY2020Q3	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	54415000	USD
CY2019Q4	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	38225000	USD
CY2020Q3	us-gaap	Nontrade Receivables Current NontradeReceivablesCurrent	15056000	USD
CY2019Q4	us-gaap	Nontrade Receivables Current NontradeReceivablesCurrent	14187000	USD
CY2020Q3	us-gaap	Receivables Long Term Contracts Or Programs ReceivablesLongTermContractsOrPrograms	46247000	USD
CY2019Q4	us-gaap	Receivables Long Term Contracts Or Programs ReceivablesLongTermContractsOrPrograms	34879000	USD
CY2020Q3	us-gaap	Public Utilities Inventory PublicUtilitiesInventory	8611000	USD
CY2019Q4	us-gaap	Public Utilities Inventory PublicUtilitiesInventory	7745000	USD
CY2020Q3	cwt	Taxes Prepaid Expenses And Other Assets Current TaxesPrepaidExpensesAndOtherAssetsCurrent	14726000	USD
CY2019Q4	cwt	Taxes Prepaid Expenses And Other Assets Current TaxesPrepaidExpensesAndOtherAssetsCurrent	14965000	USD
CY2020Q3	us-gaap	Assets Current AssetsCurrent	305764000	USD
CY2019Q4	us-gaap	Assets Current AssetsCurrent	184712000	USD
CY2020Q3	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	484435000	USD
CY2019Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	433322000	USD
CY2020Q3	us-gaap	Goodwill Goodwill	30349000	USD
CY2019Q4	us-gaap	Goodwill Goodwill	2615000	USD
CY2020Q3	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	89572000	USD
CY2019Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	84289000	USD
CY2020Q3	cwt	Total Other Assets TotalOtherAssets	604356000	USD
CY2019Q4	cwt	Total Other Assets TotalOtherAssets	520226000	USD
CY2020Q3	us-gaap	Assets Assets	3506434000	USD
CY2019Q4	us-gaap	Assets Assets	3111308000	USD
CY2020Q3	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2019Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2019Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	68000000	shares
CY2020Q3	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	68000000	shares
CY2020Q3	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	49840000	shares
CY2019Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	48532000	shares
CY2020Q3	us-gaap	Common Stock Value CommonStockValue	498000	USD
CY2019Q4	us-gaap	Common Stock Value CommonStockValue	485000	USD
CY2020Q3	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	422391000	USD
CY2019Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	362275000	USD
CY2020Q3	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	467303000	USD
CY2019Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	417146000	USD
CY2020Q3	us-gaap	Stockholders Equity StockholdersEquity	890192000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	779906000	USD
CY2020Q3	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	785055000	USD
CY2019Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	786754000	USD
CY2020Q3	us-gaap	Capitalization Longterm Debt And Equity CapitalizationLongtermDebtAndEquity	1675247000	USD
CY2019Q4	us-gaap	Capitalization Longterm Debt And Equity CapitalizationLongtermDebtAndEquity	1566660000	USD
CY2020Q3	us-gaap	Long Term Debt Current LongTermDebtCurrent	21883000	USD
CY2019Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	21868000	USD
CY2020Q3	us-gaap	Short Term Borrowings ShortTermBorrowings	375100000	USD
CY2019Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	175100000	USD
CY2020Q3	us-gaap	Accounts Payable Current AccountsPayableCurrent	127158000	USD
CY2019Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	108463000	USD
CY2020Q3	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	11003000	USD
CY2019Q4	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	4462000	USD
CY2020Q3	us-gaap	Interest Payable Current InterestPayableCurrent	14233000	USD
CY2019Q4	us-gaap	Interest Payable Current InterestPayableCurrent	5810000	USD
CY2020Q3	us-gaap	Accrued Liabilities And Other Liabilities AccruedLiabilitiesAndOtherLiabilities	54446000	USD
CY2019Q4	us-gaap	Accrued Liabilities And Other Liabilities AccruedLiabilitiesAndOtherLiabilities	43018000	USD
CY2020Q3	us-gaap	Liabilities Current LiabilitiesCurrent	603823000	USD
CY2019Q4	us-gaap	Liabilities Current LiabilitiesCurrent	358721000	USD
CY2020Q3	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	245456000	USD
CY2019Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	222590000	USD
CY2020Q3	us-gaap	Other Postretirement Defined Benefit Plan Liabilities Noncurrent OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent	261081000	USD
CY2019Q4	us-gaap	Other Postretirement Defined Benefit Plan Liabilities Noncurrent OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent	258907000	USD
CY2020Q3	cwt	Regulatory And Other Liabilities RegulatoryAndOtherLiabilities	257054000	USD
CY2019Q4	cwt	Regulatory And Other Liabilities RegulatoryAndOtherLiabilities	271831000	USD
CY2020Q3	us-gaap	Contract With Customer Refund Liability Noncurrent ContractWithCustomerRefundLiabilityNoncurrent	196853000	USD
CY2019Q4	us-gaap	Contract With Customer Refund Liability Noncurrent ContractWithCustomerRefundLiabilityNoncurrent	191062000	USD
CY2020Q3	us-gaap	Contributions In Aid Of Construction ContributionsInAidOfConstruction	266920000	USD
CY2019Q4	us-gaap	Contributions In Aid Of Construction ContributionsInAidOfConstruction	241537000	USD
CY2020Q3	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2019Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2020Q3	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	3506434000	USD
CY2019Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	3111308000	USD
CY2020Q3	us-gaap	Regulated Operating Revenue Water RegulatedOperatingRevenueWater	304108000	USD
CY2019Q3	us-gaap	Regulated Operating Revenue Water RegulatedOperatingRevenueWater	232537000	USD
CY2020Q3	us-gaap	Utilities Operating Expense Products And Services UtilitiesOperatingExpenseProductsAndServices	85344000	USD
CY2019Q3	us-gaap	Utilities Operating Expense Products And Services UtilitiesOperatingExpenseProductsAndServices	80568000	USD
CY2020Q3	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	29208000	USD
CY2019Q3	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	26779000	USD
CY2020Q3	us-gaap	Utilities Operating Expense Other UtilitiesOperatingExpenseOther	29746000	USD
CY2019Q3	us-gaap	Utilities Operating Expense Other UtilitiesOperatingExpenseOther	24550000	USD
CY2020Q3	us-gaap	Utilities Operating Expense Maintenance UtilitiesOperatingExpenseMaintenance	7129000	USD
CY2019Q3	us-gaap	Utilities Operating Expense Maintenance UtilitiesOperatingExpenseMaintenance	7065000	USD
CY2020Q3	us-gaap	Utilities Operating Expense Depreciation And Amortization UtilitiesOperatingExpenseDepreciationAndAmortization	24699000	USD
CY2019Q3	us-gaap	Utilities Operating Expense Depreciation And Amortization UtilitiesOperatingExpenseDepreciationAndAmortization	22273000	USD
CY2020Q3	cwt	Utilities Operating Expense Income Tax Expense Benefit UtilitiesOperatingExpenseIncomeTaxExpenseBenefit	13804000	USD
CY2019Q3	cwt	Utilities Operating Expense Income Tax Expense Benefit UtilitiesOperatingExpenseIncomeTaxExpenseBenefit	12194000	USD
CY2020Q3	cwt	Utilities Operating Expense Propertyand Other Taxes UtilitiesOperatingExpensePropertyandOtherTaxes	8116000	USD
CY2019Q3	cwt	Utilities Operating Expense Propertyand Other Taxes UtilitiesOperatingExpensePropertyandOtherTaxes	7541000	USD
CY2020Q3	cwt	Utilities Operating Income Expense UtilitiesOperatingIncomeExpense	198046000	USD
CY2019Q3	cwt	Utilities Operating Income Expense UtilitiesOperatingIncomeExpense	180970000	USD
CY2020Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	106062000	USD
CY2019Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	51567000	USD
CY2020Q3	us-gaap	Unregulated Operating Revenue UnregulatedOperatingRevenue	3934000	USD
CY2019Q3	us-gaap	Unregulated Operating Revenue UnregulatedOperatingRevenue	4118000	USD
CY2020Q3	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	2865000	USD
CY2019Q3	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	4351000	USD
CY2020Q3	us-gaap	Defined Benefit Plan Other Costs DefinedBenefitPlanOtherCosts	1008000	USD
CY2019Q3	us-gaap	Defined Benefit Plan Other Costs DefinedBenefitPlanOtherCosts	1857000	USD
CY2020Q3	us-gaap	Public Utilities Allowance For Funds Used During Construction Additions PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions	973000	USD
CY2019Q3	us-gaap	Public Utilities Allowance For Funds Used During Construction Additions PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions	1868000	USD
CY2020Q3	cwt	Utilities Nonregulated Expense Income Tax Expense Benefit UtilitiesNonregulatedExpenseIncomeTaxExpenseBenefit	245000	USD
CY2019Q3	cwt	Utilities Nonregulated Expense Income Tax Expense Benefit UtilitiesNonregulatedExpenseIncomeTaxExpenseBenefit	-330000	USD
CY2020Q3	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	789000	USD
CY2019Q3	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	108000	USD
CY2020Q3	us-gaap	Interest Expense Debt InterestExpenseDebt	11162000	USD
CY2019Q3	us-gaap	Interest Expense Debt InterestExpenseDebt	10279000	USD
CY2020Q3	us-gaap	Interest Costs Capitalized Adjustment InterestCostsCapitalizedAdjustment	671000	USD
CY2019Q3	us-gaap	Interest Costs Capitalized Adjustment InterestCostsCapitalizedAdjustment	1028000	USD
CY2020Q3	us-gaap	Interest Costs Incurred InterestCostsIncurred	10491000	USD
CY2019Q3	us-gaap	Interest Costs Incurred InterestCostsIncurred	9251000	USD
CY2020Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	96360000	USD
CY2019Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	42424000	USD
CY2020Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.94
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.88
CY2020Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.94
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.88
CY2020Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	49576000	shares
CY2019Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	48141000	shares
CY2020Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	49576000	shares
CY2019Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	48141000	shares
	us-gaap	Regulated Operating Revenue Water RegulatedOperatingRevenueWater	605155000	USD
	us-gaap	Regulated Operating Revenue Water RegulatedOperatingRevenueWater	537679000	USD
	us-gaap	Utilities Operating Expense Products And Services UtilitiesOperatingExpenseProductsAndServices	210462000	USD
	us-gaap	Utilities Operating Expense Products And Services UtilitiesOperatingExpenseProductsAndServices	190795000	USD
	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	85827000	USD
	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	81310000	USD
	us-gaap	Utilities Operating Expense Other UtilitiesOperatingExpenseOther	69618000	USD
	us-gaap	Utilities Operating Expense Other UtilitiesOperatingExpenseOther	64913000	USD
	us-gaap	Utilities Operating Expense Maintenance UtilitiesOperatingExpenseMaintenance	20924000	USD
	us-gaap	Utilities Operating Expense Maintenance UtilitiesOperatingExpenseMaintenance	19212000	USD
	us-gaap	Utilities Operating Expense Depreciation And Amortization UtilitiesOperatingExpenseDepreciationAndAmortization	73733000	USD
	us-gaap	Utilities Operating Expense Depreciation And Amortization UtilitiesOperatingExpenseDepreciationAndAmortization	66967000	USD
	cwt	Utilities Operating Expense Income Tax Expense Benefit UtilitiesOperatingExpenseIncomeTaxExpenseBenefit	10489000	USD
	cwt	Utilities Operating Expense Income Tax Expense Benefit UtilitiesOperatingExpenseIncomeTaxExpenseBenefit	13524000	USD
	cwt	Utilities Operating Expense Propertyand Other Taxes UtilitiesOperatingExpensePropertyandOtherTaxes	22470000	USD
	cwt	Utilities Operating Expense Propertyand Other Taxes UtilitiesOperatingExpensePropertyandOtherTaxes	21902000	USD
	cwt	Utilities Operating Income Expense UtilitiesOperatingIncomeExpense	493523000	USD
	cwt	Utilities Operating Income Expense UtilitiesOperatingIncomeExpense	458623000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	111632000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	79056000	USD
	us-gaap	Unregulated Operating Revenue UnregulatedOperatingRevenue	11969000	USD
	us-gaap	Unregulated Operating Revenue UnregulatedOperatingRevenue	14149000	USD
	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	11811000	USD
	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	10470000	USD
	us-gaap	Defined Benefit Plan Other Costs DefinedBenefitPlanOtherCosts	3770000	USD
	us-gaap	Defined Benefit Plan Other Costs DefinedBenefitPlanOtherCosts	4308000	USD
	us-gaap	Public Utilities Allowance For Funds Used During Construction Additions PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions	4292000	USD
	us-gaap	Public Utilities Allowance For Funds Used During Construction Additions PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions	5087000	USD
	cwt	Utilities Nonregulated Expense Income Tax Expense Benefit UtilitiesNonregulatedExpenseIncomeTaxExpenseBenefit	152000	USD
	cwt	Utilities Nonregulated Expense Income Tax Expense Benefit UtilitiesNonregulatedExpenseIncomeTaxExpenseBenefit	985000	USD
	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	528000	USD
	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	3473000	USD
	us-gaap	Interest Expense Debt InterestExpenseDebt	33573000	USD
	us-gaap	Interest Expense Debt InterestExpenseDebt	33532000	USD
	us-gaap	Interest Costs Capitalized Adjustment InterestCostsCapitalizedAdjustment	2747000	USD
	us-gaap	Interest Costs Capitalized Adjustment InterestCostsCapitalizedAdjustment	2783000	USD
	us-gaap	Interest Costs Incurred InterestCostsIncurred	30826000	USD
	us-gaap	Interest Costs Incurred InterestCostsIncurred	30749000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	81334000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	51780000	USD
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.66
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.08
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.66
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.08
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	49034000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	48121000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	49034000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	48121000	shares
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	81334000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	51780000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	75550000	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	68522000	USD
	us-gaap	Life Insurance Corporate Or Bank Owned Change In Value LifeInsuranceCorporateOrBankOwnedChangeInValue	621000	USD
	us-gaap	Life Insurance Corporate Or Bank Owned Change In Value LifeInsuranceCorporateOrBankOwnedChangeInValue	3433000	USD
	us-gaap	Public Utilities Allowance For Funds Used During Construction Additions PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions	4292000	USD
	us-gaap	Public Utilities Allowance For Funds Used During Construction Additions PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions	5087000	USD
	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	41374000	USD
	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	29436000	USD
	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	7199000	USD
	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	16735000	USD
	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	536000	USD
	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	3937000	USD
	us-gaap	Increase Decrease In Other Current Liabilities IncreaseDecreaseInOtherCurrentLiabilities	16304000	USD
	us-gaap	Increase Decrease In Other Current Liabilities IncreaseDecreaseInOtherCurrentLiabilities	11597000	USD
	us-gaap	Increase Decrease In Other Noncurrent Assets And Liabilities Net IncreaseDecreaseInOtherNoncurrentAssetsAndLiabilitiesNet	36900000	USD
	us-gaap	Increase Decrease In Other Noncurrent Assets And Liabilities Net IncreaseDecreaseInOtherNoncurrentAssetsAndLiabilitiesNet	-21602000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	96664000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	128343000	USD
	us-gaap	Payments To Acquire Water And Waste Water Systems PaymentsToAcquireWaterAndWasteWaterSystems	221261000	USD
	us-gaap	Payments To Acquire Water And Waste Water Systems PaymentsToAcquireWaterAndWasteWaterSystems	194942000	USD
	us-gaap	Payments To Acquire Life Insurance Policies PaymentsToAcquireLifeInsurancePolicies	2335000	USD
	us-gaap	Payments To Acquire Life Insurance Policies PaymentsToAcquireLifeInsurancePolicies	2216000	USD
	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	39544000	USD
	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	0	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-263140000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-197158000	USD
	us-gaap	Proceeds From Short Term Debt ProceedsFromShortTermDebt	270000000	USD
	us-gaap	Proceeds From Short Term Debt ProceedsFromShortTermDebt	210000000	USD
	us-gaap	Repayments Of Short Term Debt RepaymentsOfShortTermDebt	70000000	USD
	us-gaap	Repayments Of Short Term Debt RepaymentsOfShortTermDebt	120000000	USD
	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	1569000	USD
	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	0	USD
	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	398431000	USD
	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	1535000	USD
	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	401630000	USD
	cwt	Proceeds From Contribution In Aid Of Construction Financing Activities ProceedsFromContributionInAidOfConstructionFinancingActivities	19862000	USD
	cwt	Proceeds From Contribution In Aid Of Construction Financing Activities ProceedsFromContributionInAidOfConstructionFinancingActivities	21266000	USD
	us-gaap	Repayments Of Advances For Construction RepaymentsOfAdvancesForConstruction	7017000	USD
	us-gaap	Repayments Of Advances For Construction RepaymentsOfAdvancesForConstruction	5560000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	1578000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	2355000	USD
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	58573000	USD
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	1278000	USD
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	31177000	USD
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	28507000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	237128000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	72923000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	70652000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	4108000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	43298000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	47715000	USD
CY2020Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	113950000	USD
CY2019Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	51823000	USD
	us-gaap	Interest Paid Net InterestPaidNet	21862000	USD
	us-gaap	Interest Paid Net InterestPaidNet	22060000	USD
	us-gaap	Noncash Or Part Noncash Acquisition Payables Assumed1 NoncashOrPartNoncashAcquisitionPayablesAssumed1	47015000	USD
	us-gaap	Noncash Or Part Noncash Acquisition Payables Assumed1 NoncashOrPartNoncashAcquisitionPayablesAssumed1	31676000	USD
	cwt	Utility Plant Contribution By Developers UtilityPlantContributionByDevelopers	22762000	USD
	cwt	Utility Plant Contribution By Developers UtilityPlantContributionByDevelopers	23955000	USD
	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	1	segment
CY2020Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	222474000	USD
CY2019Q3	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	214963000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	529804000	USD
	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	499840000	USD
	cwt	Maximum Collection Period In Which Deferred Net Wram And Mcba Revenues And Associated Costs Will Be Recognized MaximumCollectionPeriodInWhichDeferredNetWRAMAndMCBARevenuesAndAssociatedCostsWillBeRecognized	P24M
	cwt	Maximum Collection Period In Which Deferred Net Wram And Mcba Revenues And Associated Costs Will Be Recognized MaximumCollectionPeriodInWhichDeferredNetWRAMAndMCBARevenuesAndAssociatedCostsWillBeRecognized	P24M
CY2020Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	113312000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	42653000	USD
CY2020Q3	us-gaap	Restricted Cash Current RestrictedCashCurrent	638000	USD
CY2019Q4	us-gaap	Restricted Cash Current RestrictedCashCurrent	645000	USD
CY2020Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	113950000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	43298000	USD
CY2020Q3	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	1800000	USD
CY2019Q3	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	1400000	USD
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	3100000	USD
	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	5300000	USD
CY2020Q3	us-gaap	Sale Of Stock Number Of Shares Issued In Transaction SaleOfStockNumberOfSharesIssuedInTransaction	432420	shares
CY2020Q3	cwt	Proceeds From Sale Of Common Stock ProceedsFromSaleOfCommonStock	20100000	USD
CY2020Q3	us-gaap	Payments For Commissions PaymentsForCommissions	200000	USD
	us-gaap	Sale Of Stock Number Of Shares Issued In Transaction SaleOfStockNumberOfSharesIssuedInTransaction	1225572	shares
	cwt	Proceeds From Sale Of Common Stock ProceedsFromSaleOfCommonStock	57300000	USD
	us-gaap	Payments For Commissions PaymentsForCommissions	600000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	779906000	USD
CY2020Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-20307000	USD
CY2020Q1	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	7229000	USD
CY2020Q1	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	1373000	USD
CY2020Q1	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.2125
CY2020Q1	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	10315000	USD
CY2020Q1	us-gaap	Stockholders Equity StockholdersEquity	755140000	USD
CY2020Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	5281000	USD
CY2020Q2	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	32063000	USD
CY2020Q2	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	105000	USD
CY2020Q2	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.2125
CY2020Q2	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	10356000	USD
CY2020Q2	us-gaap	Stockholders Equity StockholdersEquity	782023000	USD
CY2020Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	96360000	USD
CY2020Q3	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	22414000	USD
CY2020Q3	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	99000	USD
CY2020Q3	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.2125
CY2020Q3	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	10506000	USD
CY2020Q3	us-gaap	Stockholders Equity StockholdersEquity	890192000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	730157000	USD
CY2019Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-7640000	USD
CY2019Q1	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	3179000	USD
CY2019Q1	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	2074000	USD
CY2019Q1	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.1975
CY2019Q1	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	9493000	USD
CY2019Q1	us-gaap	Stockholders Equity StockholdersEquity	714129000	USD
CY2019Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	16996000	USD
CY2019Q2	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	1675000	USD
CY2019Q2	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	129000	USD
CY2019Q2	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.1975
CY2019Q2	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	9507000	USD
CY2019Q2	us-gaap	Stockholders Equity StockholdersEquity	723164000	USD
CY2019Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	42424000	USD
CY2019Q3	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	1866000	USD
CY2019Q3	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	152000	USD
CY2019Q3	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	0.1975
CY2019Q3	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	9507000	USD
CY2019Q3	us-gaap	Stockholders Equity StockholdersEquity	757795000	USD
CY2020Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	96360000	USD
CY2019Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	42424000	USD
CY2020Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	49576000	shares
CY2019Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	48141000	shares
CY2020Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	49576000	shares
CY2019Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	48141000	shares
CY2020Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.94
CY2019Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.88
CY2020Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.94
CY2019Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.88
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	81334000	USD
	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	51780000	USD
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	49034000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	48121000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	49034000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	48121000	shares
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.66
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.08
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.66
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.08
CY2020Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	14049000	USD
CY2019Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	11864000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	10641000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	14509000	USD
CY2020Q3	cwt	Effective Income Tax Rate Reconciliation Increase Decrease Amount EffectiveIncomeTaxRateReconciliationIncreaseDecreaseAmount	2100000	USD
CY2020Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	14000000.0	USD
CY2019Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	11900000	USD
	cwt	Effective Income Tax Rate Reconciliation Increase Decrease Amount EffectiveIncomeTaxRateReconciliationIncreaseDecreaseAmount	-3900000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	10600000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	14500000	USD
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.116
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.219
CY2020Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	12900000	USD
CY2019Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	10600000	USD
CY2020Q3	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	3500000	USD
CY2019Q3	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	3100000	USD
CY2020Q3	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	484435000	USD
CY2019Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	433322000	USD
CY2020Q3	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	193939000	USD
CY2019Q4	us-gaap	Regulatory Liability Noncurrent RegulatoryLiabilityNoncurrent	211413000	USD
CY2020Q3	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	54400000	USD
CY2019Q4	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	38200000	USD
CY2020Q3	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	11000000.0	USD
CY2019Q4	us-gaap	Regulatory Liability Current RegulatoryLiabilityCurrent	4500000	USD
CY2020Q3	us-gaap	Loss Contingency Accrual At Carrying Value LossContingencyAccrualAtCarryingValue	2400000	USD
CY2019Q4	us-gaap	Loss Contingency Accrual At Carrying Value LossContingencyAccrualAtCarryingValue	2500000	USD
	cwt	Fair Value Inputs Risk Premium FairValueInputsRiskPremium	0.0183
CY2020Q3	us-gaap	Public Utilities Property Plant And Equipment Plant In Service PublicUtilitiesPropertyPlantAndEquipmentPlantInService	3835194000	USD
CY2020Q3	us-gaap	Public Utilities Property Plant And Equipment Accumulated Depreciation PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation	1238880000	USD
CY2020Q3	us-gaap	Public Utilities Property Plant And Equipment Net PublicUtilitiesPropertyPlantAndEquipmentNet	2596314000	USD
CY2020Q3	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	113312000	USD
CY2020Q3	cwt	Accounts Receivable Current And Unbilled Revenue AccountsReceivableCurrentAndUnbilledRevenue	169115000	USD
CY2020Q3	us-gaap	Due From Affiliate Current DueFromAffiliateCurrent	0	USD
CY2020Q3	us-gaap	Other Assets Current OtherAssetsCurrent	23337000	USD
CY2020Q3	us-gaap	Assets Current AssetsCurrent	305764000	USD
CY2020Q3	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	484435000	USD
CY2020Q3	us-gaap	Investments In And Advances To Affiliates Amount Of Equity InvestmentsInAndAdvancesToAffiliatesAmountOfEquity	0	USD
CY2020Q3	us-gaap	Notes Receivable Related Parties Noncurrent NotesReceivableRelatedPartiesNoncurrent	0	USD
CY2020Q3	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	119921000	USD
CY2020Q3	cwt	Total Other Assets TotalOtherAssets	604356000	USD
CY2020Q3	us-gaap	Assets Assets	3506434000	USD
CY2020Q3	us-gaap	Stockholders Equity StockholdersEquity	890192000	USD
CY2020Q3	cwt	Affiliate Long Term Debt AffiliateLongTermDebt	0	USD
CY2020Q3	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	785055000	USD
CY2020Q3	us-gaap	Capitalization Longterm Debt And Equity CapitalizationLongtermDebtAndEquity	1675247000	USD
CY2020Q3	us-gaap	Long Term Debt Current LongTermDebtCurrent	21883000	USD
CY2020Q3	us-gaap	Short Term Borrowings ShortTermBorrowings	375100000	USD
CY2020Q3	us-gaap	Due To Affiliate Current DueToAffiliateCurrent	0	USD
CY2020Q3	cwt	Accounts Payable Including Regulatory Liability Current AccountsPayableIncludingRegulatoryLiabilityCurrent	127158000	USD
CY2020Q3	cwt	Accrued Expenses And Other Liabilities Including Accrued Interest AccruedExpensesAndOtherLiabilitiesIncludingAccruedInterest	79682000	USD
CY2020Q3	us-gaap	Liabilities Current LiabilitiesCurrent	603823000	USD
CY2020Q3	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	245456000	USD
CY2020Q3	us-gaap	Other Postretirement Defined Benefit Plan Liabilities Noncurrent OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent	261081000	USD
CY2020Q3	cwt	Regulatory And Other Liabilities RegulatoryAndOtherLiabilities	257054000	USD
CY2020Q3	us-gaap	Contract With Customer Refund Liability Noncurrent ContractWithCustomerRefundLiabilityNoncurrent	196853000	USD
CY2020Q3	us-gaap	Contributions In Aid Of Construction ContributionsInAidOfConstruction	266920000	USD
CY2020Q3	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	3506434000	USD
CY2019Q4	us-gaap	Public Utilities Property Plant And Equipment Plant In Service PublicUtilitiesPropertyPlantAndEquipmentPlantInService	3550485000	USD
CY2019Q4	us-gaap	Public Utilities Property Plant And Equipment Accumulated Depreciation PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation	1144115000	USD
CY2019Q4	us-gaap	Public Utilities Property Plant And Equipment Net PublicUtilitiesPropertyPlantAndEquipmentNet	2406370000	USD
CY2019Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	42653000	USD
CY2019Q4	cwt	Accounts Receivable Current And Unbilled Revenue AccountsReceivableCurrentAndUnbilledRevenue	119349000	USD
CY2019Q4	us-gaap	Due From Affiliate Current DueFromAffiliateCurrent	0	USD
CY2019Q4	us-gaap	Other Assets Current OtherAssetsCurrent	22710000	USD
CY2019Q4	us-gaap	Assets Current AssetsCurrent	184712000	USD
CY2019Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	433322000	USD
CY2019Q4	us-gaap	Investments In And Advances To Affiliates Amount Of Equity InvestmentsInAndAdvancesToAffiliatesAmountOfEquity	0	USD
CY2019Q4	us-gaap	Notes Receivable Related Parties Noncurrent NotesReceivableRelatedPartiesNoncurrent	0	USD
CY2019Q4	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	86904000	USD
CY2019Q4	cwt	Total Other Assets TotalOtherAssets	520226000	USD
CY2019Q4	us-gaap	Assets Assets	3111308000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	779906000	USD
CY2019Q4	cwt	Affiliate Long Term Debt AffiliateLongTermDebt	0	USD
CY2019Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	786754000	USD
CY2019Q4	us-gaap	Capitalization Longterm Debt And Equity CapitalizationLongtermDebtAndEquity	1566660000	USD
CY2019Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	21868000	USD
CY2019Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	175100000	USD
CY2019Q4	us-gaap	Due To Affiliate Current DueToAffiliateCurrent	0	USD
CY2019Q4	cwt	Accounts Payable Including Regulatory Liability Current AccountsPayableIncludingRegulatoryLiabilityCurrent	108463000	USD
CY2019Q4	cwt	Accrued Expenses And Other Liabilities Including Accrued Interest AccruedExpensesAndOtherLiabilitiesIncludingAccruedInterest	53290000	USD
CY2019Q4	us-gaap	Liabilities Current LiabilitiesCurrent	358721000	USD
CY2019Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	222590000	USD
CY2019Q4	us-gaap	Other Postretirement Defined Benefit Plan Liabilities Noncurrent OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent	258907000	USD
CY2019Q4	cwt	Regulatory And Other Liabilities RegulatoryAndOtherLiabilities	271831000	USD
CY2019Q4	us-gaap	Contract With Customer Refund Liability Noncurrent ContractWithCustomerRefundLiabilityNoncurrent	191062000	USD
CY2019Q4	us-gaap	Contributions In Aid Of Construction ContributionsInAidOfConstruction	241537000	USD
CY2019Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	3111308000	USD
CY2020Q3	us-gaap	Regulated Operating Revenue Water RegulatedOperatingRevenueWater	304108000	USD
CY2020Q3	us-gaap	Utilities Operating Expense Products And Services UtilitiesOperatingExpenseProductsAndServices	85344000	USD
CY2020Q3	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	29208000	USD
CY2020Q3	us-gaap	Utilities Operating Expense Other UtilitiesOperatingExpenseOther	29746000	USD
CY2020Q3	us-gaap	Utilities Operating Expense Maintenance UtilitiesOperatingExpenseMaintenance	7129000	USD
CY2020Q3	us-gaap	Utilities Operating Expense Depreciation And Amortization UtilitiesOperatingExpenseDepreciationAndAmortization	24699000	USD
CY2020Q3	cwt	Utilities Operating Expense Income Tax Expense Benefit UtilitiesOperatingExpenseIncomeTaxExpenseBenefit	13804000	USD
CY2020Q3	cwt	Utilities Operating Expense Propertyand Other Taxes UtilitiesOperatingExpensePropertyandOtherTaxes	8116000	USD
CY2020Q3	cwt	Utilities Operating Income Expense UtilitiesOperatingIncomeExpense	198046000	USD
CY2020Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	106062000	USD
CY2020Q3	us-gaap	Unregulated Operating Revenue UnregulatedOperatingRevenue	3934000	USD
CY2020Q3	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	2865000	USD
CY2020Q3	us-gaap	Defined Benefit Plan Other Costs DefinedBenefitPlanOtherCosts	1008000	USD
CY2020Q3	us-gaap	Public Utilities Allowance For Funds Used During Construction Additions PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions	973000	USD
CY2020Q3	cwt	Utilities Nonregulated Expense Income Tax Expense Benefit UtilitiesNonregulatedExpenseIncomeTaxExpenseBenefit	245000	USD
CY2020Q3	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	789000	USD
CY2020Q3	us-gaap	Interest Expense Debt InterestExpenseDebt	11162000	USD
CY2020Q3	us-gaap	Interest Costs Capitalized Adjustment InterestCostsCapitalizedAdjustment	671000	USD
CY2020Q3	us-gaap	Interest Costs Incurred InterestCostsIncurred	10491000	USD
CY2020Q3	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	0	USD
CY2020Q3	us-gaap	Net Income Loss NetIncomeLoss	96360000	USD
CY2019Q3	us-gaap	Regulated Operating Revenue Water RegulatedOperatingRevenueWater	232537000	USD
CY2019Q3	us-gaap	Utilities Operating Expense Products And Services UtilitiesOperatingExpenseProductsAndServices	80568000	USD
CY2019Q3	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	26779000	USD
CY2019Q3	us-gaap	Utilities Operating Expense Other UtilitiesOperatingExpenseOther	24550000	USD
CY2019Q3	us-gaap	Utilities Operating Expense Maintenance UtilitiesOperatingExpenseMaintenance	7065000	USD
CY2019Q3	us-gaap	Utilities Operating Expense Depreciation And Amortization UtilitiesOperatingExpenseDepreciationAndAmortization	22273000	USD
CY2019Q3	cwt	Utilities Operating Expense Income Tax Expense Benefit UtilitiesOperatingExpenseIncomeTaxExpenseBenefit	12194000	USD
CY2019Q3	cwt	Utilities Operating Expense Propertyand Other Taxes UtilitiesOperatingExpensePropertyandOtherTaxes	7541000	USD
CY2019Q3	cwt	Utilities Operating Income Expense UtilitiesOperatingIncomeExpense	180970000	USD
CY2019Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	51567000	USD
CY2019Q3	us-gaap	Unregulated Operating Revenue UnregulatedOperatingRevenue	4118000	USD
CY2019Q3	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	4351000	USD
CY2019Q3	us-gaap	Defined Benefit Plan Other Costs DefinedBenefitPlanOtherCosts	1857000	USD
CY2019Q3	us-gaap	Public Utilities Allowance For Funds Used During Construction Additions PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions	1868000	USD
CY2019Q3	cwt	Utilities Nonregulated Expense Income Tax Expense Benefit UtilitiesNonregulatedExpenseIncomeTaxExpenseBenefit	-330000	USD
CY2019Q3	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	108000	USD
CY2019Q3	us-gaap	Interest Expense Debt InterestExpenseDebt	10279000	USD
CY2019Q3	us-gaap	Interest Costs Incurred InterestCostsIncurred	9251000	USD
CY2019Q3	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	0	USD
CY2019Q3	us-gaap	Net Income Loss NetIncomeLoss	42424000	USD
	us-gaap	Regulated Operating Revenue Water RegulatedOperatingRevenueWater	605155000	USD
CY2019Q3	us-gaap	Interest Costs Capitalized Adjustment InterestCostsCapitalizedAdjustment	1028000	USD
	us-gaap	Utilities Operating Expense Products And Services UtilitiesOperatingExpenseProductsAndServices	210462000	USD
	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	85827000	USD
	us-gaap	Utilities Operating Expense Other UtilitiesOperatingExpenseOther	69618000	USD
	us-gaap	Utilities Operating Expense Maintenance UtilitiesOperatingExpenseMaintenance	20924000	USD
	us-gaap	Utilities Operating Expense Depreciation And Amortization UtilitiesOperatingExpenseDepreciationAndAmortization	73733000	USD
	cwt	Utilities Operating Expense Income Tax Expense Benefit UtilitiesOperatingExpenseIncomeTaxExpenseBenefit	10489000	USD
	cwt	Utilities Operating Expense Propertyand Other Taxes UtilitiesOperatingExpensePropertyandOtherTaxes	22470000	USD
	cwt	Utilities Operating Income Expense UtilitiesOperatingIncomeExpense	493523000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	111632000	USD
	us-gaap	Unregulated Operating Revenue UnregulatedOperatingRevenue	11969000	USD
	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	11811000	USD
	us-gaap	Defined Benefit Plan Other Costs DefinedBenefitPlanOtherCosts	3770000	USD
	us-gaap	Public Utilities Allowance For Funds Used During Construction Additions PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions	4292000	USD
	cwt	Utilities Nonregulated Expense Income Tax Expense Benefit UtilitiesNonregulatedExpenseIncomeTaxExpenseBenefit	152000	USD
	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	528000	USD
	us-gaap	Interest Expense Debt InterestExpenseDebt	33573000	USD
	us-gaap	Interest Costs Capitalized Adjustment InterestCostsCapitalizedAdjustment	2747000	USD
	us-gaap	Interest Costs Incurred InterestCostsIncurred	30826000	USD
	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	0	USD
	us-gaap	Net Income Loss NetIncomeLoss	81334000	USD
	us-gaap	Regulated Operating Revenue Water RegulatedOperatingRevenueWater	537679000	USD
	us-gaap	Utilities Operating Expense Products And Services UtilitiesOperatingExpenseProductsAndServices	190795000	USD
	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	81310000	USD
	us-gaap	Utilities Operating Expense Other UtilitiesOperatingExpenseOther	64913000	USD
	us-gaap	Utilities Operating Expense Maintenance UtilitiesOperatingExpenseMaintenance	19212000	USD
	us-gaap	Utilities Operating Expense Depreciation And Amortization UtilitiesOperatingExpenseDepreciationAndAmortization	66967000	USD
	cwt	Utilities Operating Expense Income Tax Expense Benefit UtilitiesOperatingExpenseIncomeTaxExpenseBenefit	13524000	USD
	cwt	Utilities Operating Expense Propertyand Other Taxes UtilitiesOperatingExpensePropertyandOtherTaxes	21902000	USD
	cwt	Utilities Operating Income Expense UtilitiesOperatingIncomeExpense	458623000	USD
	us-gaap	Defined Benefit Plan Other Costs DefinedBenefitPlanOtherCosts	4308000	USD
	us-gaap	Public Utilities Allowance For Funds Used During Construction Additions PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions	5087000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	79056000	USD
	us-gaap	Unregulated Operating Revenue UnregulatedOperatingRevenue	14149000	USD
	us-gaap	Other Nonoperating Expense OtherNonoperatingExpense	10470000	USD
	cwt	Utilities Nonregulated Expense Income Tax Expense Benefit UtilitiesNonregulatedExpenseIncomeTaxExpenseBenefit	985000	USD
	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	3473000	USD
	us-gaap	Interest Expense Debt InterestExpenseDebt	33532000	USD
	us-gaap	Interest Costs Capitalized Adjustment InterestCostsCapitalizedAdjustment	2783000	USD
	us-gaap	Interest Costs Incurred InterestCostsIncurred	30749000	USD
	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	0	USD
	us-gaap	Net Income Loss NetIncomeLoss	51780000	USD
	us-gaap	Net Income Loss NetIncomeLoss	81334000	USD
	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	0	USD
	us-gaap	Proceeds From Dividends Received ProceedsFromDividendsReceived	0	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	75550000	USD
	us-gaap	Life Insurance Corporate Or Bank Owned Change In Value LifeInsuranceCorporateOrBankOwnedChangeInValue	621000	USD
	us-gaap	Public Utilities Allowance For Funds Used During Construction Additions PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions	4292000	USD
	us-gaap	Increase Decrease In Operating Capital IncreaseDecreaseInOperatingCapital	18407000	USD
	cwt	Increase Decrease In Other Noncurrent Assets And Liabilities Net Including Amortization Of Debt Premium And Expenses IncreaseDecreaseInOtherNoncurrentAssetsAndLiabilitiesNetIncludingAmortizationOfDebtPremiumAndExpenses	36900000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	96664000	USD
	us-gaap	Payments To Acquire Water And Waste Water Systems PaymentsToAcquireWaterAndWasteWaterSystems	221261000	USD
	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	39544000	USD
	cwt	Investment In Affiliates InvestmentInAffiliates	0	USD
	cwt	Payments For Proceeds From Investment In And Advances To Affiliate Related To Investing Activities PaymentsForProceedsFromInvestmentInAndAdvancesToAffiliateRelatedToInvestingActivities	0	USD
	cwt	Proceedsfrom Issuanceof Shortterm Debtfrom Affiliate ProceedsfromIssuanceofShorttermDebtfromAffiliate	0	USD
	cwt	Proceeds From Issuance Of Long Term Debt From Affiliate ProceedsFromIssuanceOfLongTermDebtFromAffiliate	0	USD
	cwt	Paymentsfor Affiliate Longterm Debt PaymentsforAffiliateLongtermDebt	0	USD
	us-gaap	Payments To Acquire Life Insurance Policies PaymentsToAcquireLifeInsurancePolicies	2335000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-263140000	USD
	us-gaap	Proceeds From Short Term Debt ProceedsFromShortTermDebt	270000000	USD
	us-gaap	Repayments Of Short Term Debt RepaymentsOfShortTermDebt	70000000	USD
	cwt	Investments From Affiliates InvestmentsFromAffiliates	0	USD
	us-gaap	Repayments Of Related Party Debt RepaymentsOfRelatedPartyDebt	0	USD
	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	1535000	USD
	cwt	Proceeds From Contribution In Aid Of Construction Financing Activities ProceedsFromContributionInAidOfConstructionFinancingActivities	19862000	USD
	us-gaap	Repayments Of Advances For Construction RepaymentsOfAdvancesForConstruction	7017000	USD
	cwt	Change In Payments For Proceeds From Investment In And Advances To Affiliate Related To Financing Activities ChangeInPaymentsForProceedsFromInvestmentInAndAdvancesToAffiliateRelatedToFinancingActivities	0	USD
	cwt	Proceeds From Related Party Debt Short Term ProceedsFromRelatedPartyDebtShortTerm	0	USD
	us-gaap	Proceeds From Related Party Debt ProceedsFromRelatedPartyDebt	0	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	1578000	USD
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	58573000	USD
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	31177000	USD
	us-gaap	Payments Of Distributions To Affiliates PaymentsOfDistributionsToAffiliates	0	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	237128000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	70652000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	43298000	USD
CY2020Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	113950000	USD
	us-gaap	Net Income Loss NetIncomeLoss	51780000	USD
	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	0	USD
	us-gaap	Proceeds From Dividends Received ProceedsFromDividendsReceived	0	USD
	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	68522000	USD
	us-gaap	Life Insurance Corporate Or Bank Owned Change In Value LifeInsuranceCorporateOrBankOwnedChangeInValue	3433000	USD
	us-gaap	Public Utilities Allowance For Funds Used During Construction Additions PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions	5087000	USD
	us-gaap	Increase Decrease In Operating Capital IncreaseDecreaseInOperatingCapital	5041000	USD
	cwt	Increase Decrease In Other Noncurrent Assets And Liabilities Net Including Amortization Of Debt Premium And Expenses IncreaseDecreaseInOtherNoncurrentAssetsAndLiabilitiesNetIncludingAmortizationOfDebtPremiumAndExpenses	-21602000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	128343000	USD
	us-gaap	Payments To Acquire Water And Waste Water Systems PaymentsToAcquireWaterAndWasteWaterSystems	194942000	USD
	cwt	Payments For Proceeds From Investment In And Advances To Affiliate Related To Investing Activities PaymentsForProceedsFromInvestmentInAndAdvancesToAffiliateRelatedToInvestingActivities	0	USD
	cwt	Proceedsfrom Issuanceof Shortterm Debtfrom Affiliate ProceedsfromIssuanceofShorttermDebtfromAffiliate	0	USD
	cwt	Paymentsfor Affiliate Longterm Debt PaymentsforAffiliateLongtermDebt	0	USD
	us-gaap	Payments To Acquire Life Insurance Policies PaymentsToAcquireLifeInsurancePolicies	2216000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-197158000	USD
	us-gaap	Proceeds From Short Term Debt ProceedsFromShortTermDebt	210000000	USD
	us-gaap	Repayments Of Short Term Debt RepaymentsOfShortTermDebt	120000000	USD
	cwt	Change In Payments For Proceeds From Investment In And Advances To Affiliate Related To Financing Activities ChangeInPaymentsForProceedsFromInvestmentInAndAdvancesToAffiliateRelatedToFinancingActivities	0	USD
	cwt	Proceeds From Related Party Debt Short Term ProceedsFromRelatedPartyDebtShortTerm	0	USD
	us-gaap	Repayments Of Related Party Debt RepaymentsOfRelatedPartyDebt	0	USD
	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	398431000	USD
	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	401630000	USD
	cwt	Proceeds From Contribution In Aid Of Construction Financing Activities ProceedsFromContributionInAidOfConstructionFinancingActivities	21266000	USD
	us-gaap	Repayments Of Advances For Construction RepaymentsOfAdvancesForConstruction	5560000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	2355000	USD
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	1278000	USD
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	28507000	USD
	us-gaap	Payments Of Distributions To Affiliates PaymentsOfDistributionsToAffiliates	0	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	72923000	USD
	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Including Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect	4108000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	47715000	USD
CY2019Q3	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	51823000	USD

Files In Submission

Name	View Source	Status
0001035201-20-000010-index-headers.html	Edgar Link	pending
0001035201-20-000010-index.html	Edgar Link	pending
0001035201-20-000010.txt	Edgar Link	pending
0001035201-20-000010-xbrl.zip	Edgar Link	pending
cws-09302020xex311ng.htm	Edgar Link	pending
cws-09302020xex312ng.htm	Edgar Link	pending
cws-09302020xex32ng.htm	Edgar Link	pending
cwt-20200930.htm	Edgar Link	pending
cwt-20200930.xsd	Edgar Link	pending
cwt-20200930_cal.xml	Edgar Link	unprocessable
cwt-20200930_def.xml	Edgar Link	unprocessable
cwt-20200930_htm.xml	Edgar Link	completed
cwt-20200930_lab.xml	Edgar Link	unprocessable
cwt-20200930_pre.xml	Edgar Link	unprocessable
FilingSummary.xml	Edgar Link	unprocessable
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
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
R45.htm	Edgar Link	pending
R46.htm	Edgar Link	pending
R47.htm	Edgar Link	pending
R48.htm	Edgar Link	pending
R49.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

Create your account

Find Stocks Worth Researching

Deeply Understand Businesses

Value Businesses Intelligently

$CWT
CALIFORNIA WATER SERVICE GROUP Stock $cwt

2020 Q3 Form 10-Q Financial Statement

#000103520120000010 Filed on November 06, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CWT CALIFORNIA WATER SERVICE GROUP Stock $cwt

2020 Q3 Form 10-Q Financial Statement

#000103520120000010 Filed on November 06, 2020

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CWT
CALIFORNIA WATER SERVICE GROUP Stock $cwt