$AWR
AMERICAN STATES WATER CO Stock $awr

$awr Overview Financials Valuation SEC Filings Company Website

2021 Q4 Form 10-K Financial Statement

#000105690322000022 Filed on February 22, 2022

Income Statement

Concept	2021 Q4	2021	2020 Q4
Revenue	$116.6M	$498.9M	$124.2M
YoY Change	-6.1%	2.17%	9.92%
Cost Of Revenue	$23.22M	$56.91M	$24.10M
YoY Change	-3.67%	-8.82%	7.59%
Gross Profit	$93.41M	$441.9M	$100.1M
YoY Change	-6.69%	3.78%	10.49%
Gross Profit Margin	80.09%	88.59%	80.6%
Selling, General & Admin	$20.61M	$83.55M	$19.60M
YoY Change	5.15%	-0.06%	-7.55%
% of Gross Profit	22.06%	18.9%	19.58%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$10.53M	$39.60M	$9.800M
YoY Change	7.49%	7.45%	8.89%
% of Gross Profit	11.28%	8.96%	9.79%
Operating Expenses	$63.86M	$258.1M	$70.80M
YoY Change	-9.81%	-1.72%	7.44%
Operating Profit	$29.55M	$141.0M	$29.28M
YoY Change	0.94%	8.03%	18.42%
Interest Expense	-$4.634M	$22.83M	-$4.600M
YoY Change	0.74%	1.34%	-9.8%
% of Operating Profit	-15.68%	16.2%	-15.71%
Other Income/Expense, Net	$2.136M	-$16.21M	$2.500M
YoY Change	-14.56%	2.08%	108.33%
Pretax Income	$27.52M	$124.8M	$27.20M
YoY Change	1.17%	8.87%	30.77%
Income Tax	$7.169M	$30.42M	$7.000M
% Of Pretax Income	26.05%	24.38%	25.74%
Net Earnings	$20.35M	$94.35M	$20.21M
YoY Change	0.69%	9.17%	21.02%
Net Earnings / Revenue	17.45%	18.91%	16.27%
Basic Earnings Per Share		$2.55	$0.55
Diluted Earnings Per Share	$549.6K	$2.55	$0.54
COMMON SHARES
Basic Shares Outstanding	36.94M shares	36.92M shares	36.89M shares
Diluted Shares Outstanding		37.01M shares

Balance Sheet

Concept	2021 Q4	2021	2020 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments	$9.404M	$9.404M	$36.70M
YoY Change	-74.38%	-74.38%	2723.08%
Cash & Equivalents	$4.963M	$4.963M	$36.74M
Short-Term Investments	$4.441M	$4.441M
Other Short-Term Assets	$41.36M	$41.36M	$44.50M
YoY Change	-7.05%	-7.05%	-4.91%
Inventory	$12.16M	$12.16M	$8.600M
Prepaid Expenses
Receivables	$34.42M	$74.89M	$29.16M
Other Receivables	$236.0K	$236.0K	$100.0K
Total Short-Term Assets	$138.1M	$138.1M	$157.1M
YoY Change	-12.13%	-12.12%	28.3%
LONG-TERM ASSETS
Property, Plant & Equipment	$1.626B	$1.677B	$1.512B
YoY Change	7.54%	7.62%	6.8%
Goodwill	$1.116M		$1.116M
YoY Change	0.0%		0.0%
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets	$16.23M	$19.41M	$10.60M
YoY Change	53.16%	38.66%	37.59%
Total Long-Term Assets	$1.763B	$1.763B	$1.634B
YoY Change	7.86%	7.86%	7.61%
TOTAL ASSETS
Total Short-Term Assets	$138.1M	$138.1M	$157.1M
Total Long-Term Assets	$1.763B	$1.763B	$1.634B
Total Assets	$1.901B	$1.901B	$1.792B
YoY Change	6.11%	6.11%	9.16%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$65.90M	$65.90M	$63.79M
YoY Change	3.31%	3.29%	14.69%
Accrued Expenses	$4.545M	$39.98M	$4.832M
YoY Change	-5.94%	17.94%	58.43%
Deferred Revenue	$257.0K		$1.800M
YoY Change	-85.72%		-83.88%
Short-Term Debt	$31.00M	$31.00M	$0.00
YoY Change			-100.0%
Long-Term Debt Due	$377.0K	$377.0K	$400.0K
YoY Change	-5.75%	-5.75%	16.28%
Total Short-Term Liabilities	$155.6M	$155.6M	$118.6M
YoY Change	31.21%	31.18%	2.22%
LONG-TERM LIABILITIES
Long-Term Debt	$412.2M	$586.7M	$440.3M
YoY Change	-6.4%	2.12%	56.71%
Other Long-Term Liabilities	$13.87M	$332.5M	$15.43M
YoY Change	-10.13%	2.12%	10.83%
Total Long-Term Liabilities	$647.3M	$919.2M	$591.0M
YoY Change	9.52%	2.12%	-8.06%
TOTAL LIABILITIES
Total Short-Term Liabilities	$155.6M	$155.6M	$118.6M
Total Long-Term Liabilities	$647.3M	$919.2M	$591.0M
Total Liabilities	$802.9M	$1.215B	$709.6M
YoY Change	13.15%	5.66%	-6.49%
SHAREHOLDERS EQUITY
Retained Earnings	$427.5M		$385.0M
YoY Change	11.04%		11.29%
Common Stock	$258.4M		$256.7M
YoY Change	0.69%		0.43%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$685.9M	$685.9M	$641.7M
YoY Change
Total Liabilities & Shareholders Equity	$1.901B	$1.901B	$1.792B
YoY Change	6.11%	6.11%	9.16%

Cashflow Statement

Concept	2021 Q4	2021	2020 Q4
OPERATING ACTIVITIES
Net Income	$20.35M	$94.35M	$20.21M
YoY Change	0.69%	9.17%	21.02%
Depreciation, Depletion And Amortization	$10.53M	$39.60M	$9.800M
YoY Change	7.49%	7.45%	8.89%
Cash From Operating Activities	$33.66M	$115.6M	$34.40M
YoY Change	-2.15%	-5.39%	5.52%
INVESTING ACTIVITIES
Capital Expenditures	-$37.79M	$144.5M	-$35.60M
YoY Change	6.16%	10.8%	-12.75%
Acquisitions
YoY Change
Other Investing Activities	-$806.0K	$1.142M	-$1.400M
YoY Change	-42.43%	-10.43%	-17.65%
Cash From Investing Activities	-$38.60M	-$145.1M	-$37.00M
YoY Change	4.32%	10.24%	-12.94%
FINANCING ACTIVITIES
Cash Dividend Paid		$51.69M
YoY Change		9.5%
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net		$28.36M
YoY Change		8339.29%
Cash From Financing Activities	2.761M	-$2.266M	31.20M
YoY Change	-91.15%	-105.05%	3366.67%
NET CHANGE
Cash From Operating Activities	33.66M	$115.6M	34.40M
Cash From Investing Activities	-38.60M	-$145.1M	-37.00M
Cash From Financing Activities	2.761M	-$2.266M	31.20M
Net Change In Cash	-2.178M	-$31.77M	28.60M
YoY Change	-107.62%	-189.75%	-417.78%
FREE CASH FLOW
Cash From Operating Activities	$33.66M	$115.6M	$34.40M
Capital Expenditures	-$37.79M	$144.5M	-$35.60M
Free Cash Flow	$71.45M	-$28.93M	$70.00M
YoY Change	2.08%	250.55%	-4.63%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2021	dei	Entity Central Index Key EntityCentralIndexKey	0001056903
CY2021	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2021
CY2021	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2021	dei	Amendment Flag AmendmentFlag	false
CY2021	dei	Document Type DocumentType	10-K
CY2021	dei	Document Annual Report DocumentAnnualReport	true
CY2021	dei	Document Period End Date DocumentPeriodEndDate	2021-12-31
CY2021	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2021	dei	Document Transition Report DocumentTransitionReport	false
CY2021	dei	Entity File Number EntityFileNumber	001-14431
CY2021	dei	Entity Registrant Name EntityRegistrantName	American States Water Company
CY2021	dei	Entity Tax Identification Number EntityTaxIdentificationNumber	95-4676679
CY2021	dei	Entity Incorporation State Country Code EntityIncorporationStateCountryCode	CA
CY2021	dei	Entity Address Address Line1 EntityAddressAddressLine1	630 E. Foothill Boulevard,
CY2021	dei	Entity Address City Or Town EntityAddressCityOrTown	San Dimas
CY2021	dei	Entity Address State Or Province EntityAddressStateOrProvince	CA
CY2021	dei	Entity Address Postal Zip Code EntityAddressPostalZipCode	91773-1212
CY2021	dei	City Area Code CityAreaCode	(909)
CY2021	dei	Local Phone Number LocalPhoneNumber	394-3600
CY2021	dei	Security12b Title Security12bTitle	American States Water Company Common Shares
CY2021	dei	Trading Symbol TradingSymbol	AWR
CY2021	dei	Security Exchange Name SecurityExchangeName	NYSE
CY2021	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2021	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2021	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2021	dei	Entity Interactive Data Current EntityInteractiveDataCurrent	Yes
CY2021	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2021	dei	Entity Small Business EntitySmallBusiness	false
CY2021	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2021	dei	Icfr Auditor Attestation Flag IcfrAuditorAttestationFlag	true
CY2021	dei	Entity Shell Company EntityShellCompany	false
CY2021Q2	dei	Entity Public Float EntityPublicFloat	2938292000	USD
CY2022Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	36945434	shares
CY2021	dei	Auditor Firm AuditorFirmId	238
CY2021	dei	Auditor Name AuditorName	PricewaterhouseCoopers LLP
CY2021	dei	Auditor Location AuditorLocation	Los Angeles, California
CY2021Q4	awr	Utilities Water Property Plant And Equipment Gross UtilitiesWaterPropertyPlantAndEquipmentGross	1898817000	USD
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CY2021Q4	awr	Utilities Electric Property Plant And Equipment Gross UtilitiesElectricPropertyPlantAndEquipmentGross	116472000	USD
CY2020Q4	awr	Utilities Electric Property Plant And Equipment Gross UtilitiesElectricPropertyPlantAndEquipmentGross	112507000	USD
CY2021Q4	awr	Utilities Property Plant And Equipment Gross UtilitiesPropertyPlantAndEquipmentGross	2015289000	USD
CY2020Q4	awr	Utilities Property Plant And Equipment Gross UtilitiesPropertyPlantAndEquipmentGross	1896909000	USD
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CY2021Q4	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	377000	USD
CY2020Q4	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	358000	USD
CY2021Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	3235000	USD
CY2020Q4	us-gaap	Deferred Finance Costs Net DeferredFinanceCostsNet	3565000	USD
CY2021Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	412176000	USD
CY2020Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	440348000	USD
CY2021Q4	us-gaap	Capitalization Longterm Debt And Equity CapitalizationLongtermDebtAndEquity	1098123000	USD
CY2020Q4	us-gaap	Capitalization Longterm Debt And Equity CapitalizationLongtermDebtAndEquity	1082021000	USD
CY2021	us-gaap	Regulated Operating Revenue Water RegulatedOperatingRevenueWater	347112000	USD
CY2020	us-gaap	Regulated Operating Revenue Water RegulatedOperatingRevenueWater	330637000	USD
CY2019	us-gaap	Regulated Operating Revenue Water RegulatedOperatingRevenueWater	319830000	USD
CY2021	us-gaap	Regulated Operating Revenue Electric Non Nuclear RegulatedOperatingRevenueElectricNonNuclear	38345000	USD
CY2020	us-gaap	Regulated Operating Revenue Electric Non Nuclear RegulatedOperatingRevenueElectricNonNuclear	37024000	USD
CY2019	us-gaap	Regulated Operating Revenue Electric Non Nuclear RegulatedOperatingRevenueElectricNonNuclear	39548000	USD
CY2021	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	113396000	USD
CY2020	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	120582000	USD
CY2019	us-gaap	Revenue From Contract With Customer Including Assessed Tax RevenueFromContractWithCustomerIncludingAssessedTax	114491000	USD
CY2021	us-gaap	Revenues Revenues	498853000	USD
CY2020	us-gaap	Revenues Revenues	488243000	USD
CY2019	us-gaap	Revenues Revenues	473869000	USD
CY2021	awr	Utilities Operating Expense Water Purchased UtilitiesOperatingExpenseWaterPurchased	77914000	USD
CY2020	awr	Utilities Operating Expense Water Purchased UtilitiesOperatingExpenseWaterPurchased	74554000	USD
CY2019	awr	Utilities Operating Expense Water Purchased UtilitiesOperatingExpenseWaterPurchased	72289000	USD
CY2021	awr	Power Purchased For Pumping PowerPurchasedForPumping	11103000	USD
CY2020	awr	Power Purchased For Pumping PowerPurchasedForPumping	10134000	USD
CY2019	awr	Power Purchased For Pumping PowerPurchasedForPumping	8660000	USD
CY2021	awr	Groundwater Production Assessment GroundwaterProductionAssessment	19412000	USD
CY2020	awr	Groundwater Production Assessment GroundwaterProductionAssessment	20392000	USD
CY2019	awr	Groundwater Production Assessment GroundwaterProductionAssessment	18962000	USD
CY2021	us-gaap	Utilities Operating Expense Purchased Power UtilitiesOperatingExpensePurchasedPower	11240000	USD
CY2020	us-gaap	Utilities Operating Expense Purchased Power UtilitiesOperatingExpensePurchasedPower	10423000	USD
CY2019	us-gaap	Utilities Operating Expense Purchased Power UtilitiesOperatingExpensePurchasedPower	11796000	USD
CY2021	awr	Supply Cost Balancing Accounts SupplyCostBalancingAccounts	-11421000	USD
CY2020	awr	Supply Cost Balancing Accounts SupplyCostBalancingAccounts	-11803000	USD
CY2019	awr	Supply Cost Balancing Accounts SupplyCostBalancingAccounts	-7026000	USD
CY2021	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	34738000	USD
CY2020	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	33236000	USD
CY2019	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	32756000	USD
CY2021	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	83547000	USD
CY2020	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	83615000	USD
CY2019	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	83034000	USD
CY2021	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	39596000	USD
CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	36850000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	35397000	USD
CY2021	us-gaap	Utilities Operating Expense Maintenance And Operations UtilitiesOperatingExpenseMaintenanceAndOperations	12781000	USD
CY2020	us-gaap	Utilities Operating Expense Maintenance And Operations UtilitiesOperatingExpenseMaintenanceAndOperations	15702000	USD
CY2019	us-gaap	Utilities Operating Expense Maintenance And Operations UtilitiesOperatingExpenseMaintenanceAndOperations	15466000	USD
CY2021	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	22522000	USD
CY2020	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	22199000	USD
CY2019	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	20042000	USD
CY2021	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	56909000	USD
CY2020	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	62411000	USD
CY2019	us-gaap	Cost Of Goods And Services Sold CostOfGoodsAndServicesSold	55673000	USD
CY2021	us-gaap	Gain Loss On Sales Of Assets And Asset Impairment Charges GainLossOnSalesOfAssetsAndAssetImpairmentCharges	465000	USD
CY2020	us-gaap	Gain Loss On Sales Of Assets And Asset Impairment Charges GainLossOnSalesOfAssetsAndAssetImpairmentCharges	-31000	USD
CY2019	us-gaap	Gain Loss On Sales Of Assets And Asset Impairment Charges GainLossOnSalesOfAssetsAndAssetImpairmentCharges	253000	USD
CY2021	us-gaap	Utilities Operating Expense UtilitiesOperatingExpense	357876000	USD
CY2020	us-gaap	Utilities Operating Expense UtilitiesOperatingExpense	357744000	USD
CY2019	us-gaap	Utilities Operating Expense UtilitiesOperatingExpense	346796000	USD
CY2021	us-gaap	Operating Income Loss OperatingIncomeLoss	140977000	USD
CY2020	us-gaap	Operating Income Loss OperatingIncomeLoss	130499000	USD
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	127073000	USD
CY2021	us-gaap	Interest Expense InterestExpense	22834000	USD
CY2020	us-gaap	Interest Expense InterestExpense	22531000	USD
CY2019	us-gaap	Interest Expense InterestExpense	24586000	USD
CY2021	us-gaap	Investment Income Interest InvestmentIncomeInterest	1493000	USD
CY2020	us-gaap	Investment Income Interest InvestmentIncomeInterest	1801000	USD
CY2019	us-gaap	Investment Income Interest InvestmentIncomeInterest	3249000	USD
CY2021	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	5134000	USD
CY2020	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	4853000	USD
CY2019	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	3276000	USD
CY2021	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-16207000	USD
CY2020	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-15877000	USD
CY2019	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-18061000	USD
CY2021	us-gaap	Income Loss Attributable To Parent IncomeLossAttributableToParent	124770000	USD
CY2020	us-gaap	Income Loss Attributable To Parent IncomeLossAttributableToParent	114622000	USD
CY2019	us-gaap	Income Loss Attributable To Parent IncomeLossAttributableToParent	109012000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	30423000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	28197000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	24670000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	94347000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	86425000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	84342000	USD
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	36921000	shares
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	36880000	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	36814000	shares
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.55
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.34
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.28
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	37010000	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	36995000	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	36964000	shares
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.55
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.33
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.28
CY2021	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.40
CY2020	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.28
CY2019	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.16
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	558223000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	84342000	USD
CY2019	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	519000	USD
CY2019	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	1148000	USD
CY2019	awr	Dividends Equivalent Rights On Share Based Compensation Not Paid In Cash Net Of Tax DividendsEquivalentRightsOnShareBasedCompensationNotPaidInCashNetOfTax	210000	USD
CY2019	us-gaap	Dividends Common Stock DividendsCommonStock	42702000	USD
CY2019	awr	Dividends Equivalent Rights On Share Based Compensation Net Of Tax DividendsEquivalentRightsOnShareBasedCompensationNetOfTax	210000	USD
CY2019Q4	us-gaap	Stockholders Equity StockholdersEquity	601530000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	86425000	USD
CY2020	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	30000	USD
CY2020	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	894000	USD
CY2020	awr	Dividends Equivalent Rights On Share Based Compensation Not Paid In Cash Net Of Tax DividendsEquivalentRightsOnShareBasedCompensationNotPaidInCashNetOfTax	176000	USD
CY2020	us-gaap	Dividends Common Stock DividendsCommonStock	47206000	USD
CY2020	awr	Dividends Equivalent Rights On Share Based Compensation Net Of Tax DividendsEquivalentRightsOnShareBasedCompensationNetOfTax	176000	USD
CY2020Q4	us-gaap	Stockholders Equity StockholdersEquity	641673000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	94347000	USD
CY2021	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	0	USD
CY2021	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	1616000	USD
CY2021	awr	Dividends Equivalent Rights On Share Based Compensation Not Paid In Cash Net Of Tax DividendsEquivalentRightsOnShareBasedCompensationNotPaidInCashNetOfTax	160000	USD
CY2021	us-gaap	Dividends Common Stock DividendsCommonStock	51689000	USD
CY2021	awr	Dividends Equivalent Rights On Share Based Compensation Net Of Tax DividendsEquivalentRightsOnShareBasedCompensationNetOfTax	160000	USD
CY2021Q4	us-gaap	Stockholders Equity StockholdersEquity	685947000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	94347000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	86425000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	84342000	USD
CY2021	us-gaap	Depreciation And Amortization DepreciationAndAmortization	39974000	USD
CY2020	us-gaap	Depreciation And Amortization DepreciationAndAmortization	37204000	USD
CY2019	us-gaap	Depreciation And Amortization DepreciationAndAmortization	35713000	USD
CY2021	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	1119000	USD
CY2020	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	1433000	USD
CY2019	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	608000	USD
CY2021	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	3561000	USD
CY2020	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	2243000	USD
CY2019	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	6623000	USD
CY2021	us-gaap	Share Based Compensation ShareBasedCompensation	2566000	USD
CY2020	us-gaap	Share Based Compensation ShareBasedCompensation	2463000	USD
CY2019	us-gaap	Share Based Compensation ShareBasedCompensation	2517000	USD
CY2021	us-gaap	Gain Loss On Sales Of Assets And Asset Impairment Charges GainLossOnSalesOfAssetsAndAssetImpairmentCharges	465000	USD
CY2020	us-gaap	Gain Loss On Sales Of Assets And Asset Impairment Charges GainLossOnSalesOfAssetsAndAssetImpairmentCharges	-31000	USD
CY2019	us-gaap	Gain Loss On Sales Of Assets And Asset Impairment Charges GainLossOnSalesOfAssetsAndAssetImpairmentCharges	253000	USD
CY2021	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	4287000	USD
CY2020	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	3024000	USD
CY2019	us-gaap	Unrealized Gain Loss On Investments UnrealizedGainLossOnInvestments	3580000	USD
CY2021	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-84000	USD
CY2020	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	908000	USD
CY2019	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-526000	USD
CY2021	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	4688000	USD
CY2020	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	13272000	USD
CY2019	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-1882000	USD
CY2021	awr	Increase Decrease In Unbilled Contracts Receivables IncreaseDecreaseInUnbilledContractsReceivables	1037000	USD
CY2020	awr	Increase Decrease In Unbilled Contracts Receivables IncreaseDecreaseInUnbilledContractsReceivables	6678000	USD
CY2019	awr	Increase Decrease In Unbilled Contracts Receivables IncreaseDecreaseInUnbilledContractsReceivables	5515000	USD
CY2021	us-gaap	Increase Decrease In Accounts And Other Receivables IncreaseDecreaseInAccountsAndOtherReceivables	1422000	USD
CY2020	us-gaap	Increase Decrease In Accounts And Other Receivables IncreaseDecreaseInAccountsAndOtherReceivables	1204000	USD
CY2019	us-gaap	Increase Decrease In Accounts And Other Receivables IncreaseDecreaseInAccountsAndOtherReceivables	-214000	USD
CY2021	awr	Increase Decrease Receivable From Government IncreaseDecreaseReceivableFromGovernment	4713000	USD
CY2020	awr	Increase Decrease Receivable From Government IncreaseDecreaseReceivableFromGovernment	3889000	USD
CY2019	awr	Increase Decrease Receivable From Government IncreaseDecreaseReceivableFromGovernment	-1144000	USD
CY2021	us-gaap	Increase Decrease In Materials And Supplies IncreaseDecreaseInMaterialsAndSupplies	3544000	USD
CY2020	us-gaap	Increase Decrease In Materials And Supplies IncreaseDecreaseInMaterialsAndSupplies	2190000	USD
CY2019	us-gaap	Increase Decrease In Materials And Supplies IncreaseDecreaseInMaterialsAndSupplies	654000	USD
CY2021	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-1323000	USD
CY2020	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-1686000	USD
CY2019	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-3978000	USD
CY2021	awr	Increase Decreasein Contract Assets IncreaseDecreaseinContractAssets	-235000	USD
CY2020	awr	Increase Decreasein Contract Assets IncreaseDecreaseinContractAssets	588000	USD
CY2019	awr	Increase Decreasein Contract Assets IncreaseDecreaseinContractAssets	-3979000	USD
CY2021	us-gaap	Increase Decrease In Regulatory Assets And Liabilities IncreaseDecreaseInRegulatoryAssetsAndLiabilities	5842000	USD
CY2020	us-gaap	Increase Decrease In Regulatory Assets And Liabilities IncreaseDecreaseInRegulatoryAssetsAndLiabilities	-10150000	USD
CY2019	us-gaap	Increase Decrease In Regulatory Assets And Liabilities IncreaseDecreaseInRegulatoryAssetsAndLiabilities	11597000	USD
CY2021	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-2881000	USD
CY2020	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	5348000	USD
CY2019	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-249000	USD
CY2021	us-gaap	Increase Decrease In Income Taxes IncreaseDecreaseInIncomeTaxes	-2254000	USD
CY2020	us-gaap	Increase Decrease In Income Taxes IncreaseDecreaseInIncomeTaxes	12270000	USD
CY2019	us-gaap	Increase Decrease In Income Taxes IncreaseDecreaseInIncomeTaxes	-3786000	USD
CY2021	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	-1543000	USD
CY2020	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	-9367000	USD
CY2019	us-gaap	Increase Decrease In Contract With Customer Liability IncreaseDecreaseInContractWithCustomerLiability	3637000	USD
CY2021	us-gaap	Increase Decrease In Pension And Postretirement Obligations IncreaseDecreaseInPensionAndPostretirementObligations	3051000	USD
CY2020	us-gaap	Increase Decrease In Pension And Postretirement Obligations IncreaseDecreaseInPensionAndPostretirementObligations	1444000	USD
CY2019	us-gaap	Increase Decrease In Pension And Postretirement Obligations IncreaseDecreaseInPensionAndPostretirementObligations	1994000	USD
CY2021	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	2000000	USD
CY2020	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	2593000	USD
CY2019	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-4659000	USD
CY2021	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	115584000	USD
CY2020	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	122170000	USD
CY2019	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	116864000	USD
CY2021	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	144515000	USD
CY2020	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	130423000	USD
CY2019	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	151940000	USD
CY2021	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	565000	USD
CY2020	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	88000	USD
CY2019	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	169000	USD
CY2021	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	1142000	USD
CY2020	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	1275000	USD
CY2019	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	1424000	USD
CY2021	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-145092000	USD
CY2020	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-131610000	USD
CY2019	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-153195000	USD
CY2021	awr	Proceeds From Issuance Of Common Shares And Stock Option Exercises ProceedsFromIssuanceOfCommonSharesAndStockOptionExercises	0	USD
CY2020	awr	Proceeds From Issuance Of Common Shares And Stock Option Exercises ProceedsFromIssuanceOfCommonSharesAndStockOptionExercises	30000	USD
CY2019	awr	Proceeds From Issuance Of Common Shares And Stock Option Exercises ProceedsFromIssuanceOfCommonSharesAndStockOptionExercises	519000	USD
CY2021	us-gaap	Proceeds From Advances For Construction ProceedsFromAdvancesForConstruction	12432000	USD
CY2020	us-gaap	Proceeds From Advances For Construction ProceedsFromAdvancesForConstruction	9338000	USD
CY2019	us-gaap	Proceeds From Advances For Construction ProceedsFromAdvancesForConstruction	10171000	USD
CY2021	us-gaap	Repayments Of Advances For Construction RepaymentsOfAdvancesForConstruction	4666000	USD
CY2020	us-gaap	Repayments Of Advances For Construction RepaymentsOfAdvancesForConstruction	3729000	USD
CY2019	us-gaap	Repayments Of Advances For Construction RepaymentsOfAdvancesForConstruction	5005000	USD
CY2021	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	28356000	USD
CY2020	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	336000	USD
CY2019	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	40325000	USD
CY2021	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	0	USD
CY2020	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	159413000	USD
CY2019	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	0	USD
CY2021	us-gaap	Increase Decrease In Notes Payable Current IncreaseDecreaseInNotesPayableCurrent	71300000	USD
CY2020	us-gaap	Increase Decrease In Notes Payable Current IncreaseDecreaseInNotesPayableCurrent	-70800000	USD
CY2019	us-gaap	Increase Decrease In Notes Payable Current IncreaseDecreaseInNotesPayableCurrent	109500000	USD
CY2021	us-gaap	Payments Of Dividends PaymentsOfDividends	51689000	USD
CY2020	us-gaap	Payments Of Dividends PaymentsOfDividends	47206000	USD
CY2019	us-gaap	Payments Of Dividends PaymentsOfDividends	42702000	USD
CY2021	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	1287000	USD
CY2020	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	1867000	USD
CY2019	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	1634000	USD
CY2021	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-2266000	USD
CY2020	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	44843000	USD
CY2019	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	30524000	USD
CY2021	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	-31774000	USD
CY2020	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	35403000	USD
CY2019	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect	-5807000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	36737000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1334000	USD
CY2018Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	7141000	USD
CY2021Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	4963000	USD
CY2020Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	36737000	USD
CY2019Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	1334000	USD
CY2021	awr	Number Of Customers NumberOfCustomers	1000000	customer
CY2021Q4	us-gaap	Number Of States In Which Entity Operates NumberOfStatesInWhichEntityOperates	9
CY2021	awr	Number Of Registrants Filing Combined Report NumberOfRegistrantsFilingCombinedReport	2	registrant
CY2021	us-gaap	Related Party Transaction Amounts Of Transaction RelatedPartyTransactionAmountsOfTransaction	5300000	USD
CY2020	us-gaap	Related Party Transaction Amounts Of Transaction RelatedPartyTransactionAmountsOfTransaction	4900000	USD
CY2019	us-gaap	Related Party Transaction Amounts Of Transaction RelatedPartyTransactionAmountsOfTransaction	4700000	USD
CY2021Q4	us-gaap	Asset Retirement Obligation Legally Restricted Assets Fair Value AssetRetirementObligationLegallyRestrictedAssetsFairValue	0	USD
CY2019	us-gaap	Impairment Of Long Lived Assets Held For Use ImpairmentOfLongLivedAssetsHeldForUse	0	USD
CY2020	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	0	USD
CY2020	awr	Goodwill Acquired In Prior Period GoodwillAcquiredInPriorPeriod	1100000	USD
CY2021	awr	Goodwill Acquired In Prior Period GoodwillAcquiredInPriorPeriod	1100000	USD
CY2021	awr	Goodwill Acquired In Prior Period GoodwillAcquiredInPriorPeriod	1100000	USD
CY2021	awr	Period Of Refund Of Customer Advances For Construction PeriodOfRefundOfCustomerAdvancesForConstruction	P40Y
CY2021	awr	Revenue Performance Obligation Payment Terms RevenuePerformanceObligationPaymentTerms	P20D
CY2021	us-gaap	Revenues Revenues	498853000	USD
CY2020	us-gaap	Revenues Revenues	488243000	USD
CY2019	us-gaap	Revenues Revenues	473869000	USD
CY2021Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	3300000000	USD
CY2021Q4	awr	Regulatory Asset Not Accruing Carrying Costs RegulatoryAssetNotAccruingCarryingCosts	61400000	USD
CY2021Q4	us-gaap	Net Regulatory Assets NetRegulatoryAssets	-22796000	USD
CY2020Q4	us-gaap	Net Regulatory Assets NetRegulatoryAssets	16539000	USD
CY2021Q4	us-gaap	Public Utilities Property Plant And Equipment Accumulated Depreciation PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation	594264000	USD
CY2020Q4	us-gaap	Public Utilities Property Plant And Equipment Accumulated Depreciation PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation	568326000	USD
CY2021Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	167915000	USD
CY2020Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	150145000	USD
CY2021Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	1626004000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	1512043000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	30439000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	30321000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	26401000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	24460000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	4038000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	4038000	USD
CY2020Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	5861000	USD
CY2021Q4	us-gaap	Indefinite Lived Intangible Assets Excluding Goodwill IndefiniteLivedIntangibleAssetsExcludingGoodwill	400000	USD
CY2020Q4	us-gaap	Indefinite Lived Intangible Assets Excluding Goodwill IndefiniteLivedIntangibleAssetsExcludingGoodwill	399000	USD
CY2021	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	700000	USD
CY2020	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	654000	USD
CY2019	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	1300000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	672000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	672000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	672000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	672000	USD
CY2021Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	672000	USD
CY2021Q4	awr	Finite Lived Intangible Assets Estimated Future Amortization Expense FiniteLivedIntangibleAssetsEstimatedFutureAmortizationExpense	3360000	USD
CY2019Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	8863000	USD
CY2020	us-gaap	Asset Retirement Obligation Liabilities Incurred AssetRetirementObligationLiabilitiesIncurred	165000	USD
CY2020	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	58000	USD
CY2020	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	350000	USD
CY2020Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	9320000	USD
CY2021	us-gaap	Asset Retirement Obligation Liabilities Incurred AssetRetirementObligationLiabilitiesIncurred	148000	USD
CY2021	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	120000	USD
CY2021	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	369000	USD
CY2021Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	9717000	USD
CY2021	us-gaap	Net Income Loss NetIncomeLoss	94347000	USD
CY2020	us-gaap	Net Income Loss NetIncomeLoss	86425000	USD
CY2019	us-gaap	Net Income Loss NetIncomeLoss	84342000	USD
CY2021	awr	Weighted Average Dividends Common Stock WeightedAverageDividendsCommonStock	51689000	USD
CY2020	awr	Weighted Average Dividends Common Stock WeightedAverageDividendsCommonStock	47206000	USD
CY2019	awr	Weighted Average Dividends Common Stock WeightedAverageDividendsCommonStock	42702000	USD
CY2021	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	134000	USD
CY2020	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	158000	USD
CY2019	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	180000	USD
CY2021	us-gaap	Undistributed Earnings UndistributedEarnings	42524000	USD
CY2020	us-gaap	Undistributed Earnings UndistributedEarnings	39061000	USD
CY2019	us-gaap	Undistributed Earnings UndistributedEarnings	41460000	USD
CY2021	awr	Undistributed Earnings Allocated To Common Stock UndistributedEarningsAllocatedToCommonStock	42414000	USD
CY2020	awr	Undistributed Earnings Allocated To Common Stock UndistributedEarningsAllocatedToCommonStock	38930000	USD
CY2019	awr	Undistributed Earnings Allocated To Common Stock UndistributedEarningsAllocatedToCommonStock	41285000	USD
CY2021	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Diluted UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted	-110000	USD
CY2020	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	-131000	USD
CY2019	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Basic UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic	-175000	USD
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	94103000	USD
CY2020	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	86136000	USD
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	83987000	USD
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	36921000	shares
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	36880000	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	36814000	shares
CY2021	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.55
CY2020	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.34
CY2019	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.28
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	94103000	USD
CY2020	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	86136000	USD
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	83987000	USD
CY2021	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Diluted UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted	-110000	USD
CY2020	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Diluted UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted	-131000	USD
CY2019	us-gaap	Undistributed Earnings Loss Allocated To Participating Securities Diluted UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted	-175000	USD
CY2021	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	94213000	USD
CY2020	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	86267000	USD
CY2019	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	84162000	USD
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	36921000	shares
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	36880000	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	36814000	shares
CY2021	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	89000	shares
CY2020	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	115000	shares
CY2019	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	150000	shares
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	37010000	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	36995000	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	36964000	shares
CY2021	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.55
CY2020	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.33
CY2019	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.28
CY2020	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	1800	shares
CY2019	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	30998	shares
CY2020	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	30000	USD
CY2019	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	519000	USD
CY2021	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	0	shares
CY2021	awr	Proceedsfrom Stock Options Exercised Distributedto Subsidiaries ProceedsfromStockOptionsExercisedDistributedtoSubsidiaries	0	USD
CY2020	awr	Proceedsfrom Stock Options Exercised Distributedto Subsidiaries ProceedsfromStockOptionsExercisedDistributedtoSubsidiaries	0	USD
CY2019	awr	Proceedsfrom Stock Options Exercised Distributedto Subsidiaries ProceedsfromStockOptionsExercisedDistributedtoSubsidiaries	0	USD
CY2021Q4	awr	Dividend Reinvestment Plan Common Stock Capital Shares Reserved For Future Issuance DividendReinvestmentPlanCommonStockCapitalSharesReservedForFutureIssuance	1055948	shares
CY2021Q4	awr	Defined Contribution Plan Common Stock Capital Shares Reserved For Future Issuance DefinedContributionPlanCommonStockCapitalSharesReservedForFutureIssuance	387300	shares
CY2021Q4	us-gaap	Stockholders Equity StockholdersEquity	685900000	USD
CY2021Q4	awr	Deferred Tax Assets Regulatory Assets And Liabilities Related To Itc And Excess Deferred Taxes DeferredTaxAssetsRegulatoryAssetsAndLiabilitiesRelatedToITCAndExcessDeferredTaxes	32220000	USD
CY2020Q4	awr	Deferred Tax Assets Regulatory Assets And Liabilities Related To Itc And Excess Deferred Taxes DeferredTaxAssetsRegulatoryAssetsAndLiabilitiesRelatedToITCAndExcessDeferredTaxes	32640000	USD
CY2021Q4	awr	Deferred Tax Assets Contributions And Advances DeferredTaxAssetsContributionsAndAdvances	6850000	USD
CY2020Q4	awr	Deferred Tax Assets Contributions And Advances DeferredTaxAssetsContributionsAndAdvances	6390000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	5324000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	6092000	USD
CY2021Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	44394000	USD
CY2020Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	45122000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	150290000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	146688000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities Regulatory Assets DeferredTaxLiabilitiesRegulatoryAssets	25914000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities Regulatory Assets DeferredTaxLiabilitiesRegulatoryAssets	22205000	USD
CY2021Q4	awr	Deferred Tax Liabilities Balancing And Memorandum Accounts DeferredTaxLiabilitiesBalancingAndMemorandumAccounts	8480000	USD
CY2020Q4	awr	Deferred Tax Liabilities Balancing And Memorandum Accounts DeferredTaxLiabilitiesBalancingAndMemorandumAccounts	7401000	USD
CY2021Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	184684000	USD
CY2020Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	176294000	USD
CY2021Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	140290000	USD
CY2020Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	131172000	USD
CY2021	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	19592000	USD
CY2020	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	19240000	USD
CY2019	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	12507000	USD
CY2021	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	7270000	USD
CY2020	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	6714000	USD
CY2019	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	5540000	USD
CY2021	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	26862000	USD
CY2020	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	25954000	USD
CY2019	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	18047000	USD
CY2021	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	2802000	USD
CY2020	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	1814000	USD
CY2019	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	6407000	USD
CY2021	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	759000	USD
CY2020	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	429000	USD
CY2019	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	216000	USD
CY2021	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	3561000	USD
CY2020	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	2243000	USD
CY2019	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	6623000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	30423000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	28197000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	24670000	USD
CY2021	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	26202000	USD
CY2020	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	24071000	USD
CY2019	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	22872000	USD
CY2021	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	6425000	USD
CY2020	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	5764000	USD
CY2019	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	4758000	USD
CY2021	awr	Incometaxratereconciliationexcessdeferredtaxamortization Incometaxratereconciliationexcessdeferredtaxamortization	1356000	USD
CY2020	awr	Incometaxratereconciliationexcessdeferredtaxamortization Incometaxratereconciliationexcessdeferredtaxamortization	1550000	USD
CY2019	awr	Incometaxratereconciliationexcessdeferredtaxamortization Incometaxratereconciliationexcessdeferredtaxamortization	1579000	USD
CY2021	us-gaap	Income Tax Reconciliation Nondeductible Expense Depreciation IncomeTaxReconciliationNondeductibleExpenseDepreciation	1069000	USD
CY2020	us-gaap	Income Tax Reconciliation Nondeductible Expense Depreciation IncomeTaxReconciliationNondeductibleExpenseDepreciation	1056000	USD
CY2019	us-gaap	Income Tax Reconciliation Nondeductible Expense Depreciation IncomeTaxReconciliationNondeductibleExpenseDepreciation	1244000	USD
CY2021	awr	Income Tax Reconciliation Costof Removal IncomeTaxReconciliationCostofRemoval	1962000	USD
CY2020	awr	Income Tax Reconciliation Costof Removal IncomeTaxReconciliationCostofRemoval	1031000	USD
CY2019	awr	Income Tax Reconciliation Costof Removal IncomeTaxReconciliationCostofRemoval	1582000	USD
CY2021	us-gaap	Income Tax Reconciliation Tax Credits Investment IncomeTaxReconciliationTaxCreditsInvestment	71000	USD
CY2020	us-gaap	Income Tax Reconciliation Tax Credits Investment IncomeTaxReconciliationTaxCreditsInvestment	71000	USD
CY2019	us-gaap	Income Tax Reconciliation Tax Credits Investment IncomeTaxReconciliationTaxCreditsInvestment	71000	USD
CY2021	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	116000	USD
CY2020	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-42000	USD
CY2019	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-972000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	30423000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	28197000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	24670000	USD
CY2021	us-gaap	Income Loss Attributable To Parent IncomeLossAttributableToParent	124770000	USD
CY2020	us-gaap	Income Loss Attributable To Parent IncomeLossAttributableToParent	114622000	USD
CY2019	us-gaap	Income Loss Attributable To Parent IncomeLossAttributableToParent	109012000	USD
CY2021	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.244
CY2020	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.246
CY2019	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.226
CY2021Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0	USD
CY2019Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0	USD
CY2020Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	0	USD
CY2021	awr	Defined Benefit Plan Initial Health Care Cost Trend Rate For Employees Under Age Sixty Five DefinedBenefitPlanInitialHealthCareCostTrendRateForEmployeesUnderAgeSixtyFive	0.052
CY2021	awr	Defined Benefit Plan Ultimate Health Care Cost Trend Rate For Employees Under Age Sixty Five DefinedBenefitPlanUltimateHealthCareCostTrendRateForEmployeesUnderAgeSixtyFive	0.043
CY2021	awr	Defined Benefit Plan Initial Health Care Cost Trend Rate For Employees Of Age Sixty Five And Over DefinedBenefitPlanInitialHealthCareCostTrendRateForEmployeesOfAgeSixtyFiveAndOver	0.052
CY2021	awr	Defined Benefit Plan Ultimate Health Care Cost Trend Rate For Employees Of Age Sixty Five And Over DefinedBenefitPlanUltimateHealthCareCostTrendRateForEmployeesOfAgeSixtyFiveAndOver	0.043
CY2021	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	2700000	USD
CY2020	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	2700000	USD
CY2019	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	2500000	USD
CY2021	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	1900000	USD
CY2020	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	1900000	USD
CY2019	us-gaap	Defined Contribution Plan Employer Discretionary Contribution Amount DefinedContributionPlanEmployerDiscretionaryContributionAmount	1600000	USD
CY2021	awr	Number Of Stock Incentive Plans NumberOfStockIncentivePlans	3	stock_plan
CY2021	awr	Share Based Compensation Arrangementsby Share Based Payment Award Options Minimum Agefor Awardsto Vest Immediately ShareBasedCompensationArrangementsbyShareBasedPaymentAwardOptionsMinimumAgeforAwardstoVestImmediately	P55Y
CY2021	awr	Share Based Compensation Arrangementsby Share Based Payment Award Options Minimum Agefor Awardsto Vest Immediately ShareBasedCompensationArrangementsbyShareBasedPaymentAwardOptionsMinimumAgeforAwardstoVestImmediately	P55Y
CY2021	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	2566000	USD
CY2020	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	2463000	USD
CY2019	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	2517000	USD
CY2021	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	336000	USD
CY2020	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	299000	USD
CY2019	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	265000	USD
CY2021Q4	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized	115000	USD
CY2021	awr	Termestimatefortheenvironmentalcleanup Termestimatefortheenvironmentalcleanup	P2Y
CY2021Q4	us-gaap	Operating Lease Right Of Use Asset OperatingLeaseRightOfUseAsset	10500000	USD
CY2021Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	2000000	USD
CY2021Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	8900000	USD
CY2021	us-gaap	Lease Cost LeaseCost	2627000	USD
CY2020	us-gaap	Lease Cost LeaseCost	2873000	USD
CY2021	us-gaap	Short Term Lease Cost ShortTermLeaseCost	273000	USD
CY2020	us-gaap	Short Term Lease Cost ShortTermLeaseCost	143000	USD
CY2021Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P5Y11M26D
CY2020Q4	us-gaap	Operating Lease Weighted Average Remaining Lease Term1 OperatingLeaseWeightedAverageRemainingLeaseTerm1	P6Y7M13D
CY2021Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.037
CY2020Q4	us-gaap	Operating Lease Weighted Average Discount Rate Percent OperatingLeaseWeightedAverageDiscountRatePercent	0.036
CY2021	us-gaap	Operating Lease Payments Use OperatingLeasePaymentsUse	1430000	USD
CY2020	us-gaap	Operating Lease Payments Use OperatingLeasePaymentsUse	27000	USD
CY2021	us-gaap	Operating Lease Expense OperatingLeaseExpense	2500000	USD
CY2020	us-gaap	Operating Lease Expense OperatingLeaseExpense	2600000	USD
CY2019	us-gaap	Operating Lease Expense OperatingLeaseExpense	2800000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Next Rolling Twelve Months LesseeOperatingLeaseLiabilityPaymentsDueNextRollingTwelveMonths	2548000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Two LesseeOperatingLeaseLiabilityPaymentsDueYearTwo	2135000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Three LesseeOperatingLeaseLiabilityPaymentsDueYearThree	1821000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Four LesseeOperatingLeaseLiabilityPaymentsDueYearFour	1651000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due Year Five LesseeOperatingLeaseLiabilityPaymentsDueYearFive	1456000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due After Year Five LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive	2801000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Payments Due LesseeOperatingLeaseLiabilityPaymentsDue	12412000	USD
CY2021Q4	us-gaap	Lessee Operating Lease Liability Undiscounted Excess Amount LesseeOperatingLeaseLiabilityUndiscountedExcessAmount	1448000	USD
CY2021Q4	us-gaap	Operating Lease Liability OperatingLeaseLiability	10964000	USD
CY2021Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	2044000	USD
CY2021Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	2044000	USD
CY2021Q4	us-gaap	Operating Lease Liability Current OperatingLeaseLiabilityCurrent	2044000	USD
CY2021Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	8920000	USD
CY2021Q4	us-gaap	Operating Lease Liability Noncurrent OperatingLeaseLiabilityNoncurrent	8920000	USD
CY2021	us-gaap	Revenues Revenues	498853000	USD
CY2021	us-gaap	Operating Income Loss OperatingIncomeLoss	140977000	USD
CY2021	us-gaap	Interest Income Expense Nonoperating Net InterestIncomeExpenseNonoperatingNet	21341000	USD
CY2021Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	1626004000	USD
CY2021	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	39596000	USD
CY2021	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	30423000	USD
CY2021	us-gaap	Property Plant And Equipment Additions PropertyPlantAndEquipmentAdditions	144515000	USD
CY2020	us-gaap	Revenues Revenues	488243000	USD
CY2020	us-gaap	Operating Income Loss OperatingIncomeLoss	130499000	USD
CY2020	us-gaap	Interest Income Expense Nonoperating Net InterestIncomeExpenseNonoperatingNet	20730000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	1512043000	USD
CY2020	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	36850000	USD
CY2020	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	28197000	USD
CY2020	us-gaap	Property Plant And Equipment Additions PropertyPlantAndEquipmentAdditions	130423000	USD
CY2019	us-gaap	Revenues Revenues	473869000	USD
CY2019	us-gaap	Operating Income Loss OperatingIncomeLoss	127073000	USD
CY2019	us-gaap	Interest Income Expense Nonoperating Net InterestIncomeExpenseNonoperatingNet	21337000	USD
CY2019Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	1415705000	USD
CY2019	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	35397000	USD
CY2019	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	24670000	USD
CY2019	us-gaap	Property Plant And Equipment Additions PropertyPlantAndEquipmentAdditions	151940000	USD
CY2021Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	1626004000	USD
CY2020Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	1512043000	USD
CY2021Q4	awr	Assets Other Than Property Plant And Equipment Net AssetsOtherThanPropertyPlantAndEquipmentNet	274979000	USD
CY2020Q4	awr	Assets Other Than Property Plant And Equipment Net AssetsOtherThanPropertyPlantAndEquipmentNet	279560000	USD
CY2021Q4	us-gaap	Assets Assets	1900983000	USD
CY2020Q4	us-gaap	Assets Assets	1791603000	USD
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	5316000	USD
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	916000	USD
CY2018Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	951000	USD
CY2021	awr	Provision For Doubtful Accounts Continuing Operation ProvisionForDoubtfulAccountsContinuingOperation	8150000	USD
CY2020	awr	Provision For Doubtful Accounts Continuing Operation ProvisionForDoubtfulAccountsContinuingOperation	5016000	USD
CY2019	awr	Provision For Doubtful Accounts Continuing Operation ProvisionForDoubtfulAccountsContinuingOperation	609000	USD
CY2021	awr	Allowance For Doubtful Accounts Receivable Charge Offs Net Of Recoveries AllowanceForDoubtfulAccountsReceivableChargeOffsNetOfRecoveries	-9897000	USD
CY2020	awr	Allowance For Doubtful Accounts Receivable Charge Offs Net Of Recoveries AllowanceForDoubtfulAccountsReceivableChargeOffsNetOfRecoveries	-616000	USD
CY2019	awr	Allowance For Doubtful Accounts Receivable Charge Offs Net Of Recoveries AllowanceForDoubtfulAccountsReceivableChargeOffsNetOfRecoveries	-644000	USD
CY2021Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	3569000	USD
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	5316000	USD
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	916000	USD
CY2021Q4	awr	Allowance For Doubtful Accounts Related To Receivable From Customer AllowanceForDoubtfulAccountsRelatedToReceivableFromCustomer	3516000	USD
CY2020Q4	awr	Allowance For Doubtful Accounts Related To Receivable From Customer AllowanceForDoubtfulAccountsRelatedToReceivableFromCustomer	5263000	USD
CY2019Q4	awr	Allowance For Doubtful Accounts Related To Receivable From Customer AllowanceForDoubtfulAccountsRelatedToReceivableFromCustomer	857000	USD
CY2021Q4	awr	Allowance For Doubtful Accounts Related To Other Accounts Receivable AllowanceForDoubtfulAccountsRelatedToOtherAccountsReceivable	53000	USD
CY2020Q4	awr	Allowance For Doubtful Accounts Related To Other Accounts Receivable AllowanceForDoubtfulAccountsRelatedToOtherAccountsReceivable	53000	USD
CY2019Q4	awr	Allowance For Doubtful Accounts Related To Other Accounts Receivable AllowanceForDoubtfulAccountsRelatedToOtherAccountsReceivable	59000	USD
CY2021Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	3569000	USD
CY2020Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	5316000	USD
CY2019Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	916000	USD
CY2021	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	29153000	USD
CY2020	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	13684000	USD
CY2019	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	22496000	USD
CY2021	us-gaap	Interest Paid Net InterestPaidNet	22540000	USD
CY2020	us-gaap	Interest Paid Net InterestPaidNet	19941000	USD
CY2019	us-gaap	Interest Paid Net InterestPaidNet	25080000	USD
CY2021	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	32855000	USD
CY2020	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	27861000	USD
CY2019	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	23736000	USD
CY2021	us-gaap	Contribution Of Property ContributionOfProperty	7222000	USD
CY2020	us-gaap	Contribution Of Property ContributionOfProperty	3102000	USD
CY2019	us-gaap	Contribution Of Property ContributionOfProperty	6220000	USD
CY2021	us-gaap	Noncash Or Part Noncash Acquisition Value Of Assets Acquired1 NoncashOrPartNoncashAcquisitionValueOfAssetsAcquired1	0	USD
CY2020	us-gaap	Noncash Or Part Noncash Acquisition Value Of Assets Acquired1 NoncashOrPartNoncashAcquisitionValueOfAssetsAcquired1	0	USD
CY2019	us-gaap	Noncash Or Part Noncash Acquisition Value Of Assets Acquired1 NoncashOrPartNoncashAcquisitionValueOfAssetsAcquired1	0	USD
CY2021	us-gaap	Business Combination Consideration Transferred Equity Interests Issued And Issuable BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable	0	USD
CY2020	us-gaap	Business Combination Consideration Transferred Equity Interests Issued And Issuable BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable	0	USD
CY2019	us-gaap	Business Combination Consideration Transferred Equity Interests Issued And Issuable BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable	0	USD
CY2021	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	36921000	shares
CY2020	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	36880000	shares
CY2019	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	36814000	shares
CY2021	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	37010000	shares
CY2020	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	36995000	shares
CY2019	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	36964000	shares
CY2020	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.28
CY2019	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.16
CY2021Q4	us-gaap	Line Of Credit Facility Current Borrowing Capacity LineOfCreditFacilityCurrentBorrowingCapacity	200000000	USD

Files In Submission

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0001056903-22-000022-index.html	Edgar Link	pending
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$AWR
AMERICAN STATES WATER CO Stock $awr

2021 Q4 Form 10-K Financial Statement

#000105690322000022 Filed on February 22, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$AWR AMERICAN STATES WATER CO Stock $awr

2021 Q4 Form 10-K Financial Statement

#000105690322000022 Filed on February 22, 2022

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$AWR
AMERICAN STATES WATER CO Stock $awr