$AWR
AMERICAN STATES WATER CO Stock $awr

$awr Overview Financials Valuation SEC Filings Company Website

2011 Q4 Form 10-K Financial Statement

#000110465913016827 Filed on March 01, 2013

Income Statement

Concept	2011 Q4	2010 Q4	2010
Revenue	$96.10M	$103.7M	$399.8M
YoY Change	-7.33%	23.16%	13.17%
Cost Of Revenue	$15.40M	$15.20M	$69.10M
YoY Change	1.32%	-12.14%	2.37%
Gross Profit	$80.70M	$88.50M	$330.7M
YoY Change	-8.81%	32.29%	15.71%
Gross Profit Margin	83.98%	85.34%	82.72%
Selling, General & Admin	$19.90M	$25.70M	$86.30M
YoY Change	-22.57%	25.37%	24.89%
% of Gross Profit	24.66%	29.04%	26.1%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$12.00M	$14.50M	$37.41M
YoY Change	-17.24%	70.59%	18.63%
% of Gross Profit	14.87%	16.38%	11.31%
Operating Expenses	$65.10M	$72.50M	$326.0M
YoY Change	-10.21%	28.32%	14.61%
Operating Profit	$15.60M	$16.00M	$73.82M
YoY Change	-2.5%	53.85%	7.23%
Interest Expense	-$4.500M	-$3.700M	$21.64M
YoY Change	21.62%	-28.85%	-1.2%
% of Operating Profit	-28.85%	-23.12%	29.31%
Other Income/Expense, Net	$200.0K	$100.0K	-$19.69M
YoY Change	100.0%	0.0%	-5.17%
Pretax Income	$11.20M	$13.00M	$54.13M
YoY Change	-13.85%	140.74%	12.59%
Income Tax	$4.500M	$4.700M	$23.04M
% Of Pretax Income	40.18%	36.15%	42.56%
Net Earnings	$6.700M	$9.100M	$33.20M
YoY Change	-26.37%	167.65%	12.41%
Net Earnings / Revenue	6.97%	8.78%	8.3%
Basic Earnings Per Share			$1.78
Diluted Earnings Per Share	$177.2K	$242.0K	$1.77
COMMON SHARES
Basic Shares Outstanding			18.59M shares
Diluted Shares Outstanding			18.74M shares

Balance Sheet

Concept	2011 Q4	2010 Q4	2010
SHORT-TERM ASSETS
Cash & Short-Term Investments	$1.300M	$4.200M	$4.200M
YoY Change	-69.05%	162.5%	162.5%
Cash & Equivalents	$1.315M	$4.197M	$4.200M
Short-Term Investments
Other Short-Term Assets	$67.20M	$120.4M	$120.4M
YoY Change	-44.19%	35.59%	35.59%
Inventory	$37.50M	$37.50M	$37.50M
Prepaid Expenses
Receivables	$19.33M	$29.00M	$29.00M
Other Receivables	$20.50M	$12.30M	$12.30M
Total Short-Term Assets	$165.6M	$203.4M	$203.4M
YoY Change	-18.58%	40.37%	40.37%
LONG-TERM ASSETS
Property, Plant & Equipment	$896.5M	$855.0M	$833.0M
YoY Change	4.86%	2.64%	4.15%
Goodwill	$1.116M
YoY Change
Intangibles
YoY Change
Long-Term Investments
YoY Change
Other Assets	$12.47M	$114.8M	$114.8M
YoY Change	-89.13%	-10.66%	-14.52%
Total Long-Term Assets	$1.073B	$988.6M	$988.6M
YoY Change	8.51%	2.09%	2.09%
TOTAL ASSETS
Total Short-Term Assets	$165.6M	$203.4M	$203.4M
Total Long-Term Assets	$1.073B	$988.6M	$988.6M
Total Assets	$1.238B	$1.192B	$1.192B
YoY Change	3.89%	7.07%	7.07%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$37.87M	$36.20M	$36.20M
YoY Change	4.62%	7.42%	7.42%
Accrued Expenses	$3.938M	$11.30M	$11.30M
YoY Change	-65.15%	7.62%	7.62%
Deferred Revenue
YoY Change
Short-Term Debt	$2.000M	$60.90M	$60.90M
YoY Change	-96.72%	250.0%	250.0%
Long-Term Debt Due	$291.0K	$400.0K	$400.0K
YoY Change	-27.25%	0.0%	0.0%
Total Short-Term Liabilities	$107.6M	$178.8M	$178.8M
YoY Change	-39.83%	42.02%	42.02%
LONG-TERM LIABILITIES
Long-Term Debt	$340.4M	$299.8M	$299.8M
YoY Change	13.54%	-0.13%	-0.13%
Other Long-Term Liabilities	$6.981M	$233.9M	$233.9M
YoY Change	-97.02%	0.21%	0.21%
Total Long-Term Liabilities	$347.4M	$533.7M	$533.7M
YoY Change	-34.91%	0.02%	0.02%
TOTAL LIABILITIES
Total Short-Term Liabilities	$107.6M	$178.8M	$178.8M
Total Long-Term Liabilities	$347.4M	$533.7M	$533.7M
Total Liabilities	$455.0M	$814.5M	$814.5M
YoY Change	-44.14%	8.04%	8.04%
SHAREHOLDERS EQUITY
Retained Earnings	$175.4M	$150.2M
YoY Change	16.79%
Common Stock	$233.3M	$227.4M
YoY Change	2.6%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$408.7M	$377.5M	$377.5M
YoY Change
Total Liabilities & Shareholders Equity	$1.238B	$1.192B	$1.192B
YoY Change	3.89%	7.07%	7.07%

Cashflow Statement

Concept	2011 Q4	2010 Q4	2010
OPERATING ACTIVITIES
Net Income	$6.700M	$9.100M	$33.20M
YoY Change	-26.37%	167.65%	12.41%
Depreciation, Depletion And Amortization	$12.00M	$14.50M	$37.41M
YoY Change	-17.24%	70.59%	18.63%
Cash From Operating Activities	$17.60M	$16.70M	$53.76M
YoY Change	5.39%	-24.77%	-25.94%
INVESTING ACTIVITIES
Capital Expenditures	-$16.70M	-$21.40M	$79.05M
YoY Change	-21.96%	-2.28%	-202.0%
Acquisitions
YoY Change
Other Investing Activities	$200.0K	$700.0K	$800.0K
YoY Change	-71.43%
Cash From Investing Activities	-$16.50M	-$20.60M	-$78.23M
YoY Change	-19.9%	-5.5%	1.02%
FINANCING ACTIVITIES
Cash Dividend Paid			$19.33M
YoY Change			6.79%
Common Stock Issuance & Retirement, Net			$1.838M
YoY Change
Debt Paid & Issued, Net			$701.0K
YoY Change			14.73%
Cash From Financing Activities	-4.900M	600.0K	$28.28M
YoY Change	-916.67%	-110.0%	-3875.03%
NET CHANGE
Cash From Operating Activities	17.60M	16.70M	$53.76M
Cash From Investing Activities	-16.50M	-20.60M	-$78.23M
Cash From Financing Activities	-4.900M	600.0K	$28.28M
Net Change In Cash	-3.800M	-3.300M	$3.809M
YoY Change	15.15%	-41.07%	-168.04%
FREE CASH FLOW
Cash From Operating Activities	$17.60M	$16.70M	$53.76M
Capital Expenditures	-$16.70M	-$21.40M	$79.05M
Free Cash Flow	$34.30M	$38.10M	-$25.29M
YoY Change	-9.97%	-13.61%	-116.85%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2012Q4	awr	Utilities Water Property Plant And Equipment Gross UtilitiesWaterPropertyPlantAndEquipmentGross	1227713000	USD
CY2011Q4	awr	Utilities Water Property Plant And Equipment Gross UtilitiesWaterPropertyPlantAndEquipmentGross	1187556000	USD
CY2012Q4	awr	Utilities Electric Property Plant And Equipment Gross UtilitiesElectricPropertyPlantAndEquipmentGross	77653000	USD
CY2011Q4	awr	Utilities Electric Property Plant And Equipment Gross UtilitiesElectricPropertyPlantAndEquipmentGross	73825000	USD
CY2012Q4	awr	Non Utilities Property Plant And Equipment Gross NonUtilitiesPropertyPlantAndEquipmentGross	8917000	USD
CY2011Q4	awr	Non Utilities Property Plant And Equipment Gross NonUtilitiesPropertyPlantAndEquipmentGross	6731000	USD
CY2012Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	1314283000	USD
CY2011Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	1268112000	USD
CY2012Q4	us-gaap	Public Utilities Property Plant And Equipment Accumulated Depreciation PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation	442316000	USD
CY2011Q4	us-gaap	Public Utilities Property Plant And Equipment Accumulated Depreciation PublicUtilitiesPropertyPlantAndEquipmentAccumulatedDepreciation	413836000	USD
CY2012Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	917791000	USD
CY2011Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	896500000	USD
CY2012Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	45824000	USD
CY2011Q4	us-gaap	Construction In Progress Gross ConstructionInProgressGross	42224000	USD
CY2012Q4	awr	Utilities Property Plant And Equipment Gross UtilitiesPropertyPlantAndEquipmentGross	1305366000	USD
CY2011Q4	awr	Utilities Property Plant And Equipment Gross UtilitiesPropertyPlantAndEquipmentGross	1261381000	USD
CY2012Q4	us-gaap	Goodwill Goodwill	1116000	USD
CY2011Q4	us-gaap	Goodwill Goodwill	1116000	USD
CY2012Q4	awr	Property Plant And Equipment And Investments Other Net PropertyPlantAndEquipmentAndInvestmentsOtherNet	13755000	USD
CY2011Q4	awr	Property Plant And Equipment And Investments Other Net PropertyPlantAndEquipmentAndInvestmentsOtherNet	11803000	USD
CY2012Q4	awr	Property Plant And Equipment And Investments Other And Goodwill Net PropertyPlantAndEquipmentAndInvestmentsOtherAndGoodwillNet	14871000	USD
CY2011Q4	awr	Property Plant And Equipment And Investments Other And Goodwill Net PropertyPlantAndEquipmentAndInvestmentsOtherAndGoodwillNet	12919000	USD
CY2012Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	23486000	USD
CY2011Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	1315000	USD
CY2012Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	19491000	USD
CY2011Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	19332000	USD
CY2012Q4	us-gaap	Unbilled Receivables Current UnbilledReceivablesCurrent	16147000	USD
CY2011Q4	us-gaap	Unbilled Receivables Current UnbilledReceivablesCurrent	17255000	USD
CY2011Q4	awr	Accounts Receivable From Us Government Net Current AccountsReceivableFromUSGovernmentNetCurrent	7584000	USD
CY2012Q4	us-gaap	Accounts And Other Receivables Net Current AccountsAndOtherReceivablesNetCurrent	7062000	USD
CY2011Q4	us-gaap	Accounts And Other Receivables Net Current AccountsAndOtherReceivablesNetCurrent	12181000	USD
CY2012Q4	awr	Accounts Receivable From Us Government Net Current AccountsReceivableFromUSGovernmentNetCurrent	12905000	USD
CY2012Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	16547000	USD
CY2011Q4	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	36362000	USD
CY2011Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	20537000	USD
CY2012Q4	us-gaap	Inventory Raw Materials And Supplies InventoryRawMaterialsAndSupplies	5348000	USD
CY2011Q4	us-gaap	Inventory Raw Materials And Supplies InventoryRawMaterialsAndSupplies	3070000	USD
CY2012Q4	us-gaap	Regulatory Assets Current RegulatoryAssetsCurrent	32336000	USD
CY2012Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	4391000	USD
CY2011Q4	us-gaap	Prepaid Expense And Other Assets Current PrepaidExpenseAndOtherAssetsCurrent	3959000	USD
CY2012Q4	us-gaap	Costs In Excess Of Billings On Uncompleted Contracts Or Programs Expected To Be Collected Within One Year CostsInExcessOfBillingsOnUncompletedContractsOrProgramsExpectedToBeCollectedWithinOneYear	37703000	USD
CY2011Q4	us-gaap	Costs In Excess Of Billings On Uncompleted Contracts Or Programs Expected To Be Collected Within One Year CostsInExcessOfBillingsOnUncompletedContractsOrProgramsExpectedToBeCollectedWithinOneYear	34466000	USD
CY2012Q4	us-gaap	Assets Current AssetsCurrent	184033000	USD
CY2011Q4	us-gaap	Assets Current AssetsCurrent	165601000	USD
CY2012Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	143679000	USD
CY2011Q4	us-gaap	Regulatory Assets Noncurrent RegulatoryAssetsNoncurrent	143595000	USD
CY2012Q4	us-gaap	Costs In Excess Of Billings On Uncompleted Contracts Or Programs Expected To Be Collected After One Year CostsInExcessOfBillingsOnUncompletedContractsOrProgramsExpectedToBeCollectedAfterOneYear	436000	USD
CY2011Q4	us-gaap	Costs In Excess Of Billings On Uncompleted Contracts Or Programs Expected To Be Collected After One Year CostsInExcessOfBillingsOnUncompletedContractsOrProgramsExpectedToBeCollectedAfterOneYear	598000	USD
CY2012Q4	awr	Receivable From Us Government Net Non Current ReceivableFromUSGovernmentNetNonCurrent	4535000	USD
CY2011Q4	awr	Receivable From Us Government Net Non Current ReceivableFromUSGovernmentNetNonCurrent	6660000	USD
CY2012Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	15587000	USD
CY2011Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	12474000	USD
CY2012Q4	awr	Regulatory And Other Assets RegulatoryAndOtherAssets	164248000	USD
CY2011Q4	awr	Regulatory And Other Assets RegulatoryAndOtherAssets	163342000	USD
CY2012Q4	us-gaap	Assets Assets	1280943000	USD
CY2011Q4	us-gaap	Assets Assets	1238362000	USD
CY2012Q4	us-gaap	Stockholders Equity StockholdersEquity	454579000	USD
CY2011Q4	us-gaap	Stockholders Equity StockholdersEquity	408666000	USD
CY2012Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	332463000	USD
CY2011Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	340395000	USD
CY2012Q4	us-gaap	Capitalization Longterm Debt And Equity CapitalizationLongtermDebtAndEquity	787042000	USD
CY2011Q4	us-gaap	Capitalization Longterm Debt And Equity CapitalizationLongtermDebtAndEquity	749061000	USD
CY2011Q4	us-gaap	Notes Payable To Bank Current NotesPayableToBankCurrent	2000000	USD
CY2012Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	3328000	USD
CY2011Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	291000	USD
CY2012Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	40569000	USD
CY2011Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	37873000	USD
CY2012Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	511000	USD
CY2011Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	332000	USD
CY2012Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	9919000	USD
CY2011Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	8659000	USD
CY2012Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	3909000	USD
CY2011Q4	us-gaap	Accrued Liabilities Current AccruedLiabilitiesCurrent	3938000	USD
CY2012Q4	awr	Accumulated Unrealized Loss On Energy Contracts AccumulatedUnrealizedLossOnEnergyContracts	3060000	USD
CY2011Q4	awr	Accumulated Unrealized Loss On Energy Contracts AccumulatedUnrealizedLossOnEnergyContracts	7611000	USD
CY2012Q4	us-gaap	Billings In Excess Of Cost Current BillingsInExcessOfCostCurrent	12572000	USD
CY2011Q4	us-gaap	Billings In Excess Of Cost Current BillingsInExcessOfCostCurrent	26973000	USD
CY2012Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	11662000	USD
CY2011Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	12327000	USD
CY2012Q4	us-gaap	Liabilities Current LiabilitiesCurrent	93697000	USD
CY2011Q4	us-gaap	Liabilities Current LiabilitiesCurrent	107583000	USD
CY2012Q4	us-gaap	Customer Advances For Construction CustomerAdvancesForConstruction	70781000	USD
CY2011Q4	us-gaap	Customer Advances For Construction CustomerAdvancesForConstruction	72371000	USD
CY2012Q4	us-gaap	Contributions In Aid Of Construction ContributionsInAidOfConstruction	106450000	USD
CY2011Q4	us-gaap	Contributions In Aid Of Construction ContributionsInAidOfConstruction	100037000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	142597000	USD
CY2012Q4	us-gaap	Debt And Capital Lease Obligations DebtAndCapitalLeaseObligations	335791000	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	128963000	USD
CY2012Q4	us-gaap	Accumulated Deferred Investment Tax Credit AccumulatedDeferredInvestmentTaxCredit	1881000	USD
CY2011Q4	us-gaap	Accumulated Deferred Investment Tax Credit AccumulatedDeferredInvestmentTaxCredit	1972000	USD
CY2012Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	71618000	USD
CY2011Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	68122000	USD
CY2011Q4	us-gaap	Billings In Excess Of Cost Noncurrent BillingsInExcessOfCostNoncurrent	3272000	USD
CY2012Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	6877000	USD
CY2011Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	6981000	USD
CY2012Q4	us-gaap	Liabilities Other Than Longterm Debt Noncurrent LiabilitiesOtherThanLongtermDebtNoncurrent	400204000	USD
CY2011Q4	us-gaap	Liabilities Other Than Longterm Debt Noncurrent LiabilitiesOtherThanLongtermDebtNoncurrent	381718000	USD
CY2012Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	1280943000	USD
CY2011Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	1238362000	USD
CY2012	us-gaap	Regulated Operating Revenue Water RegulatedOperatingRevenueWater	305898000	USD
CY2011	us-gaap	Regulated Operating Revenue Water RegulatedOperatingRevenueWater	300450000	USD
CY2010	us-gaap	Regulated Operating Revenue Water RegulatedOperatingRevenueWater	291617000	USD
CY2012	us-gaap	Electric Domestic Regulated Revenue ElectricDomesticRegulatedRevenue	37033000	USD
CY2011	us-gaap	Electric Domestic Regulated Revenue ElectricDomesticRegulatedRevenue	36275000	USD
CY2010	us-gaap	Electric Domestic Regulated Revenue ElectricDomesticRegulatedRevenue	35799000	USD
CY2012	us-gaap	Contracts Revenue ContractsRevenue	123977000	USD
CY2011	us-gaap	Contracts Revenue ContractsRevenue	83188000	USD
CY2010	us-gaap	Contracts Revenue ContractsRevenue	72360000	USD
CY2012	us-gaap	Sales Revenue Net SalesRevenueNet	466908000	USD
CY2011	us-gaap	Sales Revenue Net SalesRevenueNet	419913000	USD
CY2010	us-gaap	Sales Revenue Net SalesRevenueNet	399776000	USD
CY2012	us-gaap	Cost Of Purchased Water CostOfPurchasedWater	54010000	USD
CY2011	us-gaap	Cost Of Purchased Water CostOfPurchasedWater	47530000	USD
CY2010	us-gaap	Cost Of Purchased Water CostOfPurchasedWater	46865000	USD
CY2012	awr	Power Purchased For Pumping PowerPurchasedForPumping	8355000	USD
CY2011	awr	Power Purchased For Pumping PowerPurchasedForPumping	8598000	USD
CY2010	awr	Power Purchased For Pumping PowerPurchasedForPumping	9113000	USD
CY2012	awr	Groundwater Production Assessment GroundwaterProductionAssessment	14732000	USD
CY2011	awr	Groundwater Production Assessment GroundwaterProductionAssessment	13550000	USD
CY2010	awr	Groundwater Production Assessment GroundwaterProductionAssessment	11473000	USD
CY2012	us-gaap	Cost Of Purchased Power CostOfPurchasedPower	12120000	USD
CY2011	us-gaap	Cost Of Purchased Power CostOfPurchasedPower	13574000	USD
CY2010	us-gaap	Cost Of Purchased Power CostOfPurchasedPower	13078000	USD
CY2012	awr	Supply Cost Balancing Accounts SupplyCostBalancingAccounts	11709000	USD
CY2011	awr	Supply Cost Balancing Accounts SupplyCostBalancingAccounts	18748000	USD
CY2010	awr	Supply Cost Balancing Accounts SupplyCostBalancingAccounts	20622000	USD
CY2012	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	29790000	USD
CY2011	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	28312000	USD
CY2010	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	29107000	USD
CY2012	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	70556000	USD
CY2011	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	74061000	USD
CY2010	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	86266000	USD
CY2012	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	41385000	USD
CY2010	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	37405000	USD
CY2012	us-gaap	Cost Of Property Repairs And Maintenance CostOfPropertyRepairsAndMaintenance	15887000	USD
CY2011	us-gaap	Cost Of Property Repairs And Maintenance CostOfPropertyRepairsAndMaintenance	17357000	USD
CY2010	us-gaap	Cost Of Property Repairs And Maintenance CostOfPropertyRepairsAndMaintenance	18149000	USD
CY2012	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	15381000	USD
CY2011	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	14210000	USD
CY2010	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	14165000	USD
CY2012	us-gaap	Other Cost Of Operating Revenue OtherCostOfOperatingRevenue	81957000	USD
CY2012	us-gaap	Interest Expense InterestExpense	22765000	USD
CY2011	us-gaap	Other Cost Of Operating Revenue OtherCostOfOperatingRevenue	50648000	USD
CY2010	us-gaap	Other Cost Of Operating Revenue OtherCostOfOperatingRevenue	40357000	USD
CY2012	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	68000	USD
CY2011	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	128000	USD
CY2010	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	643000	USD
CY2012	us-gaap	Operating Expenses OperatingExpenses	355814000	USD
CY2011	us-gaap	Interest Expense InterestExpense	23681000	USD
CY2010	us-gaap	Interest Expense InterestExpense	21636000	USD
CY2011	us-gaap	Operating Expenses OperatingExpenses	324809000	USD
CY2010	us-gaap	Operating Expenses OperatingExpenses	325957000	USD
CY2012	us-gaap	Operating Income Loss OperatingIncomeLoss	111094000	USD
CY2011	us-gaap	Operating Income Loss OperatingIncomeLoss	95104000	USD
CY2010	us-gaap	Operating Income Loss OperatingIncomeLoss	73819000	USD
CY2012	us-gaap	Investment Income Interest InvestmentIncomeInterest	1333000	USD
CY2011	us-gaap	Investment Income Interest InvestmentIncomeInterest	859000	USD
CY2010	us-gaap	Investment Income Interest InvestmentIncomeInterest	2406000	USD
CY2012	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	431000	USD
CY2011	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-196000	USD
CY2010	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-463000	USD
CY2012	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-21001000	USD
CY2011	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-23018000	USD
CY2010	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-19693000	USD
CY2012	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	90093000	USD
CY2011	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	72086000	USD
CY2010	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	54126000	USD
CY2012	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	35945000	USD
CY2011	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	30076000	USD
CY2010	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	23035000	USD
CY2012	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	54148000	USD
CY2011	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	42010000	USD
CY2010	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	31091000	USD
CY2011	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	3849000	USD
CY2010	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	2106000	USD
CY2012	us-gaap	Net Income Loss NetIncomeLoss	54148000	USD
CY2011	us-gaap	Net Income Loss NetIncomeLoss	45859000	USD
CY2010	us-gaap	Net Income Loss NetIncomeLoss	33197000	USD
CY2012	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	2.83
CY2011	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	2.24
CY2010	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	1.67
CY2011	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.20
CY2010	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.11
CY2012	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.83
CY2011	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.44
CY2010	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.78
CY2012	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	2.82
CY2011	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	2.23
CY2010	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	1.66
CY2011	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.20
CY2010	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.11
CY2012	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.82
CY2011	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.43
CY2010	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.77
CY2012	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	18999000	shares
CY2011	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	18693000	shares
CY2010	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	18585000	shares
CY2012	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	19131000	shares
CY2011	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	18837000	shares
CY2010	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	18736000	shares
CY2012	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.27
CY2011	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.10
CY2010	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	1.04
CY2011	us-gaap	Discontinued Operation Gain Loss On Disposal Of Discontinued Operation Net Of Tax DiscontinuedOperationGainLossOnDisposalOfDiscontinuedOperationNetOfTax	2454000	USD
CY2012	us-gaap	Depreciation And Amortization DepreciationAndAmortization	43234000	USD
CY2011	us-gaap	Depreciation And Amortization DepreciationAndAmortization	40809000	USD
CY2010	us-gaap	Depreciation And Amortization DepreciationAndAmortization	40410000	USD
CY2012	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	1710000	USD
CY2011	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	938000	USD
CY2010	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	1069000	USD
CY2012	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	15087000	USD
CY2011	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	13861000	USD
CY2010	us-gaap	Deferred Income Taxes And Tax Credits DeferredIncomeTaxesAndTaxCredits	6689000	USD
CY2012	us-gaap	Share Based Compensation ShareBasedCompensation	1931000	USD
CY2011	us-gaap	Share Based Compensation ShareBasedCompensation	1520000	USD
CY2010	us-gaap	Share Based Compensation ShareBasedCompensation	1482000	USD
CY2012	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	35000	USD
CY2011	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-359000	USD
CY2010	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-618000	USD
CY2012	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	1773000	USD
CY2011	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	2687000	USD
CY2010	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	2230000	USD
CY2012	us-gaap	Increase Decrease In Unbilled Receivables IncreaseDecreaseInUnbilledReceivables	-1108000	USD
CY2011	us-gaap	Increase Decrease In Unbilled Receivables IncreaseDecreaseInUnbilledReceivables	-3093000	USD
CY2010	us-gaap	Increase Decrease In Unbilled Receivables IncreaseDecreaseInUnbilledReceivables	2509000	USD
CY2010	us-gaap	Increase Decrease In Other Regulatory Assets IncreaseDecreaseInOtherRegulatoryAssets	-20622000	USD
CY2011	us-gaap	Increase Decrease In Other Regulatory Assets IncreaseDecreaseInOtherRegulatoryAssets	-18748000	USD
CY2012	us-gaap	Increase Decrease In Accounts And Other Receivables IncreaseDecreaseInAccountsAndOtherReceivables	-5416000	USD
CY2011	us-gaap	Increase Decrease In Accounts And Other Receivables IncreaseDecreaseInAccountsAndOtherReceivables	2139000	USD
CY2010	us-gaap	Increase Decrease In Accounts And Other Receivables IncreaseDecreaseInAccountsAndOtherReceivables	-2345000	USD
CY2012	awr	Increase Decrease Receivable From Government IncreaseDecreaseReceivableFromGovernment	3196000	USD
CY2011	awr	Increase Decrease Receivable From Government IncreaseDecreaseReceivableFromGovernment	3789000	USD
CY2010	awr	Increase Decrease Receivable From Government IncreaseDecreaseReceivableFromGovernment	-556000	USD
CY2012	us-gaap	Increase Decrease In Materials And Supplies IncreaseDecreaseInMaterialsAndSupplies	2278000	USD
CY2011	us-gaap	Increase Decrease In Materials And Supplies IncreaseDecreaseInMaterialsAndSupplies	909000	USD
CY2010	us-gaap	Increase Decrease In Materials And Supplies IncreaseDecreaseInMaterialsAndSupplies	267000	USD
CY2012	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	432000	USD
CY2011	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-2198000	USD
CY2010	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	1193000	USD
CY2012	us-gaap	Increase Decrease In Other Regulatory Assets IncreaseDecreaseInOtherRegulatoryAssets	-11709000	USD
CY2012	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	20139000	USD
CY2011	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	26661000	USD
CY2010	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	44288000	USD
CY2012	awr	Increase Decrease In Costs In Excess Of Billings On Uncompleted Contracts Or Programs IncreaseDecreaseInCostsInExcessOfBillingsOnUncompletedContractsOrPrograms	3075000	USD
CY2011	awr	Increase Decrease In Costs In Excess Of Billings On Uncompleted Contracts Or Programs IncreaseDecreaseInCostsInExcessOfBillingsOnUncompletedContractsOrPrograms	-918000	USD
CY2010	awr	Increase Decrease In Costs In Excess Of Billings On Uncompleted Contracts Or Programs IncreaseDecreaseInCostsInExcessOfBillingsOnUncompletedContractsOrPrograms	15049000	USD
CY2012	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	4300000	USD
CY2011	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-2953000	USD
CY2010	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	3154000	USD
CY2012	us-gaap	Increase Decrease In Income Taxes IncreaseDecreaseInIncomeTaxes	4169000	USD
CY2011	us-gaap	Increase Decrease In Income Taxes IncreaseDecreaseInIncomeTaxes	-14544000	USD
CY2010	us-gaap	Increase Decrease In Income Taxes IncreaseDecreaseInIncomeTaxes	-2678000	USD
CY2012	us-gaap	Increase Decrease In Billing In Excess Of Cost Of Earnings IncreaseDecreaseInBillingInExcessOfCostOfEarnings	-17673000	USD
CY2011	us-gaap	Increase Decrease In Billing In Excess Of Cost Of Earnings IncreaseDecreaseInBillingInExcessOfCostOfEarnings	4819000	USD
CY2010	us-gaap	Increase Decrease In Billing In Excess Of Cost Of Earnings IncreaseDecreaseInBillingInExcessOfCostOfEarnings	7531000	USD
CY2012	us-gaap	Increase Decrease In Pension And Postretirement Obligations IncreaseDecreaseInPensionAndPostretirementObligations	5954000	USD
CY2011	us-gaap	Increase Decrease In Pension And Postretirement Obligations IncreaseDecreaseInPensionAndPostretirementObligations	1647000	USD
CY2010	us-gaap	Increase Decrease In Pension And Postretirement Obligations IncreaseDecreaseInPensionAndPostretirementObligations	-542000	USD
CY2012	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	981000	USD
CY2011	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	1662000	USD
CY2010	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-11144000	USD
CY2012	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	101494000	USD
CY2011	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	80167000	USD
CY2010	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	53764000	USD
CY2012	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	68104000	USD
CY2011	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	80281000	USD
CY2010	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	79050000	USD
CY2011	us-gaap	Proceeds From Divestiture Of Businesses And Interests In Affiliates ProceedsFromDivestitureOfBusinessesAndInterestsInAffiliates	29603000	USD
CY2012	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	68000	USD
CY2011	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	144000	USD
CY2010	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	820000	USD
CY2012	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-68036000	USD
CY2011	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-50534000	USD
CY2010	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-78230000	USD
CY2012	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	13295000	USD
CY2011	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	2350000	USD
CY2010	us-gaap	Proceeds From Stock Options Exercised ProceedsFromStockOptionsExercised	857000	USD
CY2012	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	890000	USD
CY2011	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	336000	USD
CY2010	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	111000	USD
CY2012	us-gaap	Proceeds From Contribution In Aid Of Construction ProceedsFromContributionInAidOfConstruction	9647000	USD
CY2011	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	61912000	USD
CY2012	awr	Payments For Proceeds From Notes Payable To Bank PaymentsForProceedsFromNotesPayableToBank	2000000	USD
CY2012	awr	Allowance For Doubtful Accounts Receivable Charge Offs Net Of Recoveries AllowanceForDoubtfulAccountsReceivableChargeOffsNetOfRecoveries	1530000	USD
CY2011	awr	Payments For Proceeds From Notes Payable To Bank PaymentsForProceedsFromNotesPayableToBank	58900000	USD
CY2011	awr	Allowance For Doubtful Accounts Receivable Charge Offs Net Of Recoveries AllowanceForDoubtfulAccountsReceivableChargeOffsNetOfRecoveries	941000	USD
CY2010	awr	Allowance For Doubtful Accounts Receivable Charge Offs Net Of Recoveries AllowanceForDoubtfulAccountsReceivableChargeOffsNetOfRecoveries	1148000	USD
CY2012Q4	awr	Allowance For Doubtful Accounts Related To Receivable From Customer AllowanceForDoubtfulAccountsRelatedToReceivableFromCustomer	797000	USD
CY2011	us-gaap	Proceeds From Contribution In Aid Of Construction ProceedsFromContributionInAidOfConstruction	7489000	USD
CY2010	us-gaap	Proceeds From Contribution In Aid Of Construction ProceedsFromContributionInAidOfConstruction	6069000	USD
CY2012	us-gaap	Repayments Of Advances For Construction RepaymentsOfAdvancesForConstruction	3614000	USD
CY2011	us-gaap	Repayments Of Advances For Construction RepaymentsOfAdvancesForConstruction	4136000	USD
CY2010	us-gaap	Repayments Of Advances For Construction RepaymentsOfAdvancesForConstruction	3837000	USD
CY2012	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	8303000	USD
CY2011	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	22380000	USD
CY2010	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	701000	USD
CY2012	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	3408000	USD
CY2010	awr	Payments For Proceeds From Notes Payable To Bank PaymentsForProceedsFromNotesPayableToBank	-43500000	USD
CY2012	us-gaap	Payments Of Dividends PaymentsOfDividends	24130000	USD
CY2011	us-gaap	Payments Of Dividends PaymentsOfDividends	20552000	USD
CY2010	us-gaap	Payments Of Dividends PaymentsOfDividends	19326000	USD
CY2012	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-480000	USD
CY2011	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-292000	USD
CY2010	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-236000	USD
CY2012	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-11287000	USD
CY2011	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-32515000	USD
CY2010	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	28275000	USD
CY2012	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	22171000	USD
CY2011	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-2882000	USD
CY2010	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	3809000	USD
CY2011Q4	us-gaap	Cash And Cash Equivalents At Carrying Value Including Discontinued Operations CashAndCashEquivalentsAtCarryingValueIncludingDiscontinuedOperations	1315000	USD
CY2010Q4	us-gaap	Cash And Cash Equivalents At Carrying Value Including Discontinued Operations CashAndCashEquivalentsAtCarryingValueIncludingDiscontinuedOperations	5494000	USD
CY2012Q4	us-gaap	Cash And Cash Equivalents At Carrying Value Including Discontinued Operations CashAndCashEquivalentsAtCarryingValueIncludingDiscontinuedOperations	23486000	USD
CY2010Q4	us-gaap	Disposal Group Including Discontinued Operation Cash And Cash Equivalents DisposalGroupIncludingDiscontinuedOperationCashAndCashEquivalents	1297000	USD
CY2009Q4	us-gaap	Cash And Cash Equivalents At Carrying Value Including Discontinued Operations CashAndCashEquivalentsAtCarryingValueIncludingDiscontinuedOperations	1685000	USD
CY2009Q4	us-gaap	Stockholders Equity StockholdersEquity	359430000	USD
CY2010Q4	us-gaap	Stockholders Equity StockholdersEquity	377541000	USD
CY2010	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	1838000	USD
CY2011	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	1658000	USD
CY2010	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	857000	USD
CY2011	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	2350000	USD
CY2010	us-gaap	Adjustments To Additional Paid In Capital Tax Effect From Share Based Compensation AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation	111000	USD
CY2011	us-gaap	Adjustments To Additional Paid In Capital Tax Effect From Share Based Compensation AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation	336000	USD
CY2012	us-gaap	Adjustments To Additional Paid In Capital Tax Effect From Share Based Compensation AdjustmentsToAdditionalPaidInCapitalTaxEffectFromShareBasedCompensation	890000	USD
CY2010	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	1434000	USD
CY2011	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	1474000	USD
CY2012	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	1710000	USD
CY2011	awr	Dividends Equivalent Rights On Share Based Compensation Net Of Tax DividendsEquivalentRightsOnShareBasedCompensationNetOfTax	-103000	USD
CY2012	awr	Dividends Equivalent Rights On Share Based Compensation Net Of Tax DividendsEquivalentRightsOnShareBasedCompensationNetOfTax	-121000	USD
CY2012	dei	Entity Registrant Name EntityRegistrantName	AMERICAN STATES WATER CO
CY2012	dei	Entity Central Index Key EntityCentralIndexKey	0001056903
CY2012	dei	Document Type DocumentType	10-K
CY2012	dei	Document Period End Date DocumentPeriodEndDate	2012-12-31
CY2012	dei	Amendment Flag AmendmentFlag	false
CY2012	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2012	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2012	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2012	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2012
CY2012	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2012	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2012Q2	dei	Entity Public Float EntityPublicFloat	736956000	USD
CY2013Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	19263011	shares
CY2012Q4	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	3328000	USD
CY2011Q4	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	291000	USD
CY2011Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	340395000	USD
CY2011Q4	us-gaap	Debt And Capital Lease Obligations DebtAndCapitalLeaseObligations	340686000	USD
CY2012Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	30000000	shares
CY2011Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	30000000	shares
CY2012Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	19237212	shares
CY2011Q4	us-gaap	Common Stock Shares Outstanding CommonStockSharesOutstanding	18788993	shares
CY2012	us-gaap	Interest Income Expense Nonoperating Net InterestIncomeExpenseNonoperatingNet	-21432000	USD
CY2011	us-gaap	Interest Income Expense Nonoperating Net InterestIncomeExpenseNonoperatingNet	-22822000	USD
CY2010	us-gaap	Interest Income Expense Nonoperating Net InterestIncomeExpenseNonoperatingNet	-19230000	USD
CY2010Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	854956000	USD
CY2011	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	3849000	USD
CY2010	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	2106000	USD
CY2012	us-gaap	Additions To Noncurrent Assets AdditionsToNoncurrentAssets	68104000	USD
CY2011	us-gaap	Additions To Noncurrent Assets AdditionsToNoncurrentAssets	80281000	USD
CY2010	us-gaap	Additions To Noncurrent Assets AdditionsToNoncurrentAssets	79050000	USD
CY2012Q4	awr	Assets Other Than Property Plant And Equipment Net AssetsOtherThanPropertyPlantAndEquipmentNet	363152000	USD
CY2011Q4	awr	Assets Other Than Property Plant And Equipment Net AssetsOtherThanPropertyPlantAndEquipmentNet	341862000	USD
CY2010Q4	awr	Assets Other Than Property Plant And Equipment Net AssetsOtherThanPropertyPlantAndEquipmentNet	337079000	USD
CY2010Q4	us-gaap	Assets Assets	1192035000	USD
CY2009Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	1158000	USD
CY2010Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	1051000	USD
CY2011Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	1048000	USD
CY2012Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	1228000	USD
CY2012	awr	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Included In Calculation Of Diluted Earnings Per Share Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIncludedInCalculationOfDilutedEarningsPerShareNumber	201579	shares
CY2012	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	38519	shares
CY2011	us-gaap	Interest Paid InterestPaid	22671000	USD
CY2010	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	68025	shares
CY2012	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	675967	shares
CY2010	us-gaap	Interest Paid InterestPaid	21632000	USD
CY2010	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	9046000	USD
CY2011Q4	awr	Allowance For Doubtful Accounts Related To Receivable From Customer AllowanceForDoubtfulAccountsRelatedToReceivableFromCustomer	715000	USD
CY2010Q4	awr	Allowance For Doubtful Accounts Related To Receivable From Customer AllowanceForDoubtfulAccountsRelatedToReceivableFromCustomer	670000	USD
CY2012Q4	awr	Allowance For Doubtful Accounts Related To Receivable From Us Government AllowanceForDoubtfulAccountsRelatedToReceivableFromUSGovernment	8000	USD
CY2010Q4	awr	Allowance For Doubtful Accounts Related To Receivable From Us Government AllowanceForDoubtfulAccountsRelatedToReceivableFromUSGovernment	43000	USD
CY2012Q4	awr	Allowance For Doubtful Accounts Related To Other Accounts Receivable AllowanceForDoubtfulAccountsRelatedToOtherAccountsReceivable	423000	USD
CY2011Q4	awr	Allowance For Doubtful Accounts Related To Other Accounts Receivable AllowanceForDoubtfulAccountsRelatedToOtherAccountsReceivable	333000	USD
CY2010Q4	awr	Allowance For Doubtful Accounts Related To Other Accounts Receivable AllowanceForDoubtfulAccountsRelatedToOtherAccountsReceivable	338000	USD
CY2012	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	19411000	USD
CY2011	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	31842000	USD
CY2010	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	22287000	USD
CY2012	us-gaap	Interest Paid InterestPaid	22495000	USD
CY2012	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	12113000	USD
CY2011	us-gaap	Capital Expenditures Incurred But Not Yet Paid CapitalExpendituresIncurredButNotYetPaid	13717000	USD
CY2011	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	69434	shares
CY2012	awr	Number Of Registrants Filing Combined Report NumberOfRegistrantsFilingCombinedReport	2	registrant
CY2012	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	54148000	USD
CY2011	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	42010000	USD
CY2010	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	31091000	USD
CY2012	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	171000	USD
CY2011	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	140000	USD
CY2010	us-gaap	Preferred Stock Dividends And Other Adjustments PreferredStockDividendsAndOtherAdjustments	102000	USD
CY2012	us-gaap	Undistributed Earnings UndistributedEarnings	29848000	USD
CY2011	us-gaap	Undistributed Earnings UndistributedEarnings	25156000	USD
CY2010	us-gaap	Undistributed Earnings UndistributedEarnings	13766000	USD
CY2012	awr	Undistributed Earnings Allocated To Common Stock UndistributedEarningsAllocatedToCommonStock	29638000	USD
CY2011	awr	Undistributed Earnings Allocated To Common Stock UndistributedEarningsAllocatedToCommonStock	24985000	USD
CY2010	awr	Undistributed Earnings Allocated To Common Stock UndistributedEarningsAllocatedToCommonStock	13694000	USD
CY2012	us-gaap	Undistributed Earnings Allocated To Participating Securities UndistributedEarningsAllocatedToParticipatingSecurities	210000	USD
CY2011	us-gaap	Undistributed Earnings Allocated To Participating Securities UndistributedEarningsAllocatedToParticipatingSecurities	171000	USD
CY2010	us-gaap	Undistributed Earnings Allocated To Participating Securities UndistributedEarningsAllocatedToParticipatingSecurities	72000	USD
CY2012	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	53767000	USD
CY2011	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	45548000	USD
CY2010	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	33023000	USD
CY2012Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	201579	shares
CY2012	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	53977000	USD
CY2011	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	45719000	USD
CY2010	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	33095000	USD
CY2012	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	132000	shares
CY2011	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	144000	shares
CY2010	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	151000	shares
CY2011	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	441410	shares
CY2010	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	143034	shares
CY2012Q4	awr	Amount Available For Issuance Of Securities Under Registration Statement AmountAvailableForIssuanceOfSecuritiesUnderRegistrationStatement	115000000	USD
CY2012Q4	awr	Dividend Reinvestment Plan Common Stock Capital Shares Reserved For Future Issuance DividendReinvestmentPlanCommonStockCapitalSharesReservedForFutureIssuance	527974	shares
CY2012Q4	awr	Defined Contribution Plan Common Stock Capital Shares Reserved For Future Issuance DefinedContributionPlanCommonStockCapitalSharesReservedForFutureIssuance	193650	shares
CY2012	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	409700	shares
CY2011	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	88713	shares
CY2010	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	30500	shares
CY2012Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	35136000	USD
CY2011Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	34508000	USD
CY2012Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	20715000	USD
CY2011Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	18569000	USD
CY2012Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	14421000	USD
CY2011Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	15939000	USD
CY2012Q4	us-gaap	Indefinite Lived Intangible Assets Excluding Goodwill IndefiniteLivedIntangibleAssetsExcludingGoodwill	427000	USD
CY2012	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	2400000	USD
CY2011	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	2500000	USD
CY2010	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	2500000	USD
CY2012Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	2166000	USD
CY2012Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	2084000	USD
CY2012Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	1755000	USD
CY2012Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	1689000	USD
CY2012Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	1473000	USD
CY2012Q4	awr	Finite Lived Intangible Assets Estimated Future Amortization Expense FiniteLivedIntangibleAssetsEstimatedFutureAmortizationExpense	9167000	USD
CY2010Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	2910000	USD
CY2011Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	2989000	USD
CY2012Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	3018000	USD
CY2011	us-gaap	Asset Retirement Obligation Liabilities Incurred AssetRetirementObligationLiabilitiesIncurred	3000	USD
CY2012	us-gaap	Asset Retirement Obligation Liabilities Incurred AssetRetirementObligationLiabilitiesIncurred	48000	USD
CY2011	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	122000	USD
CY2012	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	209000	USD
CY2011	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	-198000	USD
CY2012	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	-190000	USD
CY2010Q4	us-gaap	Notes Payable To Bank Current NotesPayableToBankCurrent	60900000	USD
CY2012Q4	awr	Deferred Tax Assets Regulatory Assets And Liabilities Related To Itc And Excess Deferred Taxes DeferredTaxAssetsRegulatoryAssetsAndLiabilitiesRelatedToITCAndExcessDeferredTaxes	1649000	USD
CY2012Q4	awr	Deferred Tax Assets Other Nonproperty DeferredTaxAssetsOtherNonproperty	2609000	USD
CY2012Q4	awr	Deferred Tax Assets Contributions And Advances DeferredTaxAssetsContributionsAndAdvances	9443000	USD
CY2011Q4	awr	Deferred Tax Assets Regulatory Assets And Liabilities Related To Itc And Excess Deferred Taxes DeferredTaxAssetsRegulatoryAssetsAndLiabilitiesRelatedToITCAndExcessDeferredTaxes	1699000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Property Plant And Equipment DeferredTaxAssetsPropertyPlantAndEquipment	6612000	USD
CY2011Q4	awr	Deferred Tax Assets Other Nonproperty DeferredTaxAssetsOtherNonproperty	1157000	USD
CY2011Q4	awr	Deferred Tax Assets Balancing And Memorandum Accounts DeferredTaxAssetsBalancingAndMemorandumAccounts	2632000	USD
CY2011Q4	awr	Deferred Tax Assets Contributions And Advances DeferredTaxAssetsContributionsAndAdvances	12068000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	121802000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Regulatory Assets DeferredTaxLiabilitiesRegulatoryAssets	21754000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Deferred Expense DeferredTaxLiabilitiesDeferredExpense	6632000	USD
CY2012Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	151360000	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	117681000	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities Regulatory Assets DeferredTaxLiabilitiesRegulatoryAssets	22003000	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities Deferred Expense DeferredTaxLiabilitiesDeferredExpense	7164000	USD
CY2011Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	146848000	USD
CY2012	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	31533000	USD
CY2012	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	15585000	USD
CY2012	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	5273000	USD
CY2011	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	9107000	USD
CY2011	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	7108000	USD
CY2010	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	10785000	USD
CY2010	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	6110000	USD
CY2012	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	13088000	USD
CY2012	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	1999000	USD
CY2012	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	15087000	USD
CY2011	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	15189000	USD
CY2011	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-1328000	USD
CY2011	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	13861000	USD
CY2010	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	7465000	USD
CY2010	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-1325000	USD
CY2010	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	6140000	USD
CY2011	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	25230000	USD
CY2010	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	18944000	USD
CY2012	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	4957000	USD
CY2011	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	3781000	USD
CY2010	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	3657000	USD
CY2012	awr	Income Tax Reconciliation Flow Through On Pension Costs IncomeTaxReconciliationFlowThroughOnPensionCosts	10000	USD
CY2011	awr	Income Tax Reconciliation Flow Through On Pension Costs IncomeTaxReconciliationFlowThroughOnPensionCosts	254000	USD
CY2010	awr	Income Tax Reconciliation Flow Through On Pension Costs IncomeTaxReconciliationFlowThroughOnPensionCosts	-567000	USD
CY2012	us-gaap	Income Tax Reconciliation Tax Credits Investment IncomeTaxReconciliationTaxCreditsInvestment	91000	USD
CY2011	us-gaap	Income Tax Reconciliation Tax Credits Investment IncomeTaxReconciliationTaxCreditsInvestment	91000	USD
CY2010	us-gaap	Income Tax Reconciliation Tax Credits Investment IncomeTaxReconciliationTaxCreditsInvestment	91000	USD
CY2012	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-1100000	USD
CY2011	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-124000	USD
CY2010	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	567000	USD
CY2012	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.399	pure
CY2011	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.417	pure
CY2010	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.426	pure
CY2010	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	4110000	USD
CY2009Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	4110000	USD
CY2012	awr	Defined Benefit Plan Initial Health Care Cost Trend Rate For Employees Under Age Sixty Five DefinedBenefitPlanInitialHealthCareCostTrendRateForEmployeesUnderAgeSixtyFive	0.080	pure
CY2012	awr	Defined Benefit Plan Ultimate Health Care Cost Trend Rate For Employees Under Age Sixty Five DefinedBenefitPlanUltimateHealthCareCostTrendRateForEmployeesUnderAgeSixtyFive	0.072	pure
CY2012	awr	Defined Benefit Plan Years Within Which Rate Reaches Ultimate Trend Rate DefinedBenefitPlanYearsWithinWhichRateReachesUltimateTrendRate	P10Y
CY2012	awr	Defined Benefit Plan Initial Health Care Cost Trend Rate For Employees Of Age Sixty Five And Over DefinedBenefitPlanInitialHealthCareCostTrendRateForEmployeesOfAgeSixtyFiveAndOver	0.070	pure
CY2012	awr	Defined Benefit Plan Ultimate Health Care Cost Trend Rate For Employees Of Age Sixty Five And Over DefinedBenefitPlanUltimateHealthCareCostTrendRateForEmployeesOfAgeSixtyFiveAndOver	0.058	pure
CY2011	awr	Defined Benefit Plan Initial Health Care Cost Trend Rate For Employees Under Age Sixty Five DefinedBenefitPlanInitialHealthCareCostTrendRateForEmployeesUnderAgeSixtyFive	0.080	pure
CY2011	awr	Defined Benefit Plan Ultimate Health Care Cost Trend Rate For Employees Under Age Sixty Five DefinedBenefitPlanUltimateHealthCareCostTrendRateForEmployeesUnderAgeSixtyFive	0.065	pure
CY2011	awr	Defined Benefit Plan Years Within Which Rate Reaches Ultimate Trend Rate DefinedBenefitPlanYearsWithinWhichRateReachesUltimateTrendRate	P10Y
CY2011	awr	Defined Benefit Plan Initial Health Care Cost Trend Rate For Employees Of Age Sixty Five And Over DefinedBenefitPlanInitialHealthCareCostTrendRateForEmployeesOfAgeSixtyFiveAndOver	0.070	pure
CY2011	awr	Defined Benefit Plan Ultimate Health Care Cost Trend Rate For Employees Of Age Sixty Five And Over DefinedBenefitPlanUltimateHealthCareCostTrendRateForEmployeesOfAgeSixtyFiveAndOver	0.058	pure
CY2010	awr	Defined Benefit Plan Initial Health Care Cost Trend Rate For Employees Under Age Sixty Five DefinedBenefitPlanInitialHealthCareCostTrendRateForEmployeesUnderAgeSixtyFive	0.080	pure
CY2010	awr	Defined Benefit Plan Ultimate Health Care Cost Trend Rate For Employees Under Age Sixty Five DefinedBenefitPlanUltimateHealthCareCostTrendRateForEmployeesUnderAgeSixtyFive	0.060	pure
CY2010	awr	Defined Benefit Plan Years Within Which Rate Reaches Ultimate Trend Rate DefinedBenefitPlanYearsWithinWhichRateReachesUltimateTrendRate	P10Y
CY2010	awr	Defined Benefit Plan Initial Health Care Cost Trend Rate For Employees Of Age Sixty Five And Over DefinedBenefitPlanInitialHealthCareCostTrendRateForEmployeesOfAgeSixtyFiveAndOver	0.070	pure
CY2010	awr	Defined Benefit Plan Ultimate Health Care Cost Trend Rate For Employees Of Age Sixty Five And Over DefinedBenefitPlanUltimateHealthCareCostTrendRateForEmployeesOfAgeSixtyFiveAndOver	0.060	pure
CY2012	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Increase On Service And Interest Cost Components DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnServiceAndInterestCostComponents	102000	USD
CY2012	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Decrease On Service And Interest Cost Components1 DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnServiceAndInterestCostComponents1	88000	USD
CY2012	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Increase On Accumulated Postretirement Benefit Obligation DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnAccumulatedPostretirementBenefitObligation	1464000	USD
CY2012	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Decrease On Accumulated Postretirement Benefit Obligation1 DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnAccumulatedPostretirementBenefitObligation1	1263000	USD
CY2012Q4	us-gaap	Common Stock Value CommonStockValue	249322000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	688000	USD
CY2012	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	20858000	USD
CY2011	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	16215000	USD
CY2010	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	16895000	USD
CY2011Q4	us-gaap	Common Stock Value CommonStockValue	233306000	USD
CY2012Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	205257000	USD
CY2011Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	175360000	USD
CY2012Q4	awr	Property Plant And Equipment Before Construction Work In Progress PropertyPlantAndEquipmentBeforeConstructionWorkInProgress	871967000	USD
CY2012	awr	Number Of Stock Incentive Plans NumberOfStockIncentivePlans	3	item
CY2012	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	1931000	USD
CY2011	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	1520000	USD
CY2010	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	1482000	USD
CY2012	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	259000	USD
CY2011	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	247000	USD
CY2010	us-gaap	Employee Service Share Based Compensation Allocation Of Recognized Period Costs Capitalized Amount EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount	190000	USD
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	7.15
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0248	pure
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.0304	pure
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.2898	pure
CY2011	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P5Y
CY2010	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0248	pure
CY2010	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.0304	pure
CY2010	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.2898	pure
CY2010	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P5Y
CY2010	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	7.02
CY2012	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	3098000	USD
CY2011	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	2900000	USD
CY2010	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	3437000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	2973000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	2012000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	936000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	827000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	1589000	USD
CY2012Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	9025000	USD
CY2012Q4	awr	Regulatory Asset Not Accruing Carrying Costs RegulatoryAssetNotAccruingCarryingCosts	78500000	USD
CY2010Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	4197000	USD
CY2011	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	1658000	USD
CY2010	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	1838000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Liabilities Net Current DeferredTaxAssetsLiabilitiesNetCurrent	9540000	USD
CY2011Q4	awr	Property Plant And Equipment Before Construction Work In Progress PropertyPlantAndEquipmentBeforeConstructionWorkInProgress	854276000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Liabilities Net Current DeferredTaxAssetsLiabilitiesNetCurrent	8617000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Liabilities Net Noncurrent DeferredTaxAssetsLiabilitiesNetNoncurrent	11000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Liabilities Net Noncurrent DeferredTaxAssetsLiabilitiesNetNoncurrent	15000	USD
CY2012	us-gaap	Income Tax Reconciliation Nondeductible Expense Depreciation IncomeTaxReconciliationNondeductibleExpenseDepreciation	636000	USD
CY2011	us-gaap	Income Tax Reconciliation Nondeductible Expense Depreciation IncomeTaxReconciliationNondeductibleExpenseDepreciation	1026000	USD
CY2010	us-gaap	Income Tax Reconciliation Nondeductible Expense Depreciation IncomeTaxReconciliationNondeductibleExpenseDepreciation	525000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	133969000	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	119408000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	17391000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	27440000	USD
CY2012Q4	awr	Deferred Tax Assets Regulatory Assets And Liabilities Related To State Franchise Tax DeferredTaxAssetsRegulatoryAssetsAndLiabilitiesRelatedToStateFranchiseTax	3690000	USD
CY2011Q4	awr	Deferred Tax Assets Regulatory Assets And Liabilities Related To State Franchise Tax DeferredTaxAssetsRegulatoryAssetsAndLiabilitiesRelatedToStateFranchiseTax	3272000	USD
CY2012	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	1900000	USD
CY2011	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	1900000	USD
CY2010	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	1800000	USD
CY2012	awr	Goodwill Acquired In Prior Period GoodwillAcquiredInPriorPeriod	1100000	USD
CY2011	awr	Goodwill Acquired In Prior Period GoodwillAcquiredInPriorPeriod	1100000	USD
CY2010	awr	Public Utilities Amount Of Capital Projects To Be Filed For Revenue Recovery With Advice Letters PublicUtilitiesAmountOfCapitalProjectsToBeFiledForRevenueRecoveryWithAdviceLetters	18500000	USD
CY2012	us-gaap	Contribution Of Property ContributionOfProperty	2069000	USD
CY2011	us-gaap	Contribution Of Property ContributionOfProperty	1264000	USD
CY2010	us-gaap	Contribution Of Property ContributionOfProperty	3471000	USD
CY2012Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2011Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2011Q4	us-gaap	Indefinite Lived Intangible Assets Excluding Goodwill IndefiniteLivedIntangibleAssetsExcludingGoodwill	427000	USD
CY2012Q4	awr	Deferred Tax Liabilities Other Nonproperty DeferredTaxLiabilitiesOtherNonproperty	152000	USD
CY2012Q4	awr	Deferred Tax Liabilities Balancing And Memorandum Accounts DeferredTaxLiabilitiesBalancingAndMemorandumAccounts	1020000	USD
CY2010	awr	Dividends Equivalent Rights On Share Based Compensation Net Of Tax DividendsEquivalentRightsOnShareBasedCompensationNetOfTax	-79000	USD
CY2012Q4	us-gaap	Accrual For Taxes Other Than Income Taxes Current AccrualForTaxesOtherThanIncomeTaxesCurrent	8167000	USD
CY2011Q4	us-gaap	Accrual For Taxes Other Than Income Taxes Current AccrualForTaxesOtherThanIncomeTaxesCurrent	7579000	USD
CY2012	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2013Q1	dei	Entity Public Float EntityPublicFloat	1007455000	USD
CY2012	awr	Asset Impairment And Other Charges AssetImpairmentAndOtherCharges	416000	USD
CY2010	awr	Asset Impairment And Other Charges AssetImpairmentAndOtherCharges	16634000	USD
CY2012	awr	Stock Issued During Period Value New Issues And Stock Options Exercised StockIssuedDuringPeriodValueNewIssuesAndStockOptionsExercised	13295000	USD
CY2012	awr	Weighted Average Dividends Common Stock WeightedAverageDividendsCommonStock	24129000	USD
CY2011	awr	Weighted Average Dividends Common Stock WeightedAverageDividendsCommonStock	20563000	USD
CY2010	awr	Weighted Average Dividends Common Stock WeightedAverageDividendsCommonStock	19329000	USD
CY2012	us-gaap	Dividends Common Stock DividendsCommonStock	24130000	USD
CY2011	us-gaap	Dividends Common Stock DividendsCommonStock	20552000	USD
CY2010	us-gaap	Dividends Common Stock DividendsCommonStock	19326000	USD
CY2011	awr	Dividends Equivalent Rights On Share Based Compensation Not Paid In Cash Net Of Tax DividendsEquivalentRightsOnShareBasedCompensationNotPaidInCashNetOfTax	103000	USD
CY2012	awr	Dividends Equivalent Rights On Share Based Compensation Not Paid In Cash Net Of Tax DividendsEquivalentRightsOnShareBasedCompensationNotPaidInCashNetOfTax	121000	USD
CY2010	awr	Dividends Equivalent Rights On Share Based Compensation Not Paid In Cash Net Of Tax DividendsEquivalentRightsOnShareBasedCompensationNotPaidInCashNetOfTax	79000	USD
CY2011	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	38349000	USD
CY2012Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	332463000	USD

Files In Submission

Name	View Source	Status
0001104659-13-016827-index-headers.html	Edgar Link	pending
0001104659-13-016827-index.html	Edgar Link	pending
0001104659-13-016827.txt	Edgar Link	pending
0001104659-13-016827-xbrl.zip	Edgar Link	pending
a12-29034_110k.htm	Edgar Link	pending
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awr-20121231.xml	Edgar Link	completed
awr-20121231.xsd	Edgar Link	pending
awr-20121231_cal.xml	Edgar Link	unprocessable
awr-20121231_def.xml	Edgar Link	unprocessable
awr-20121231_lab.xml	Edgar Link	unprocessable
awr-20121231_pre.xml	Edgar Link	unprocessable
FilingSummary.xml	Edgar Link	unprocessable
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$AWR
AMERICAN STATES WATER CO Stock $awr

2011 Q4 Form 10-K Financial Statement

#000110465913016827 Filed on March 01, 2013

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$AWR AMERICAN STATES WATER CO Stock $awr

2011 Q4 Form 10-K Financial Statement

#000110465913016827 Filed on March 01, 2013

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$AWR
AMERICAN STATES WATER CO Stock $awr