XML 50 R44.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Regulatory Matters (Details) (USD $) | Dec. 31, 2014 | Dec. 31, 2013
--- | --- | ---
Regulatory matters: |  |
Regulatory asset not accruing carrying costs | $ 67,500,000 awr_RegulatoryAssetNotAccruingCarryingCosts |
Pension Costs and Other Postretirement Benefit Costs [Member] |  |
Regulatory matters: |  |
Regulatory asset not accruing carrying costs | 40,700,000 awr_RegulatoryAssetNotAccruingCarryingCosts / us-gaap_RegulatoryAssetAxis = awr_PensionCostsAndOtherPostretirementBenefitCostsMember |
Derivative unrealized loss |  |
Regulatory matters: |  |
Regulatory asset not accruing carrying costs | 3,300,000 awr_RegulatoryAssetNotAccruingCarryingCosts / us-gaap_RegulatoryAssetAxis = awr_DerivativeUnrealizedLossMember |
Flow-through taxes, net |  |
Regulatory matters: |  |
Regulatory asset not accruing carrying costs | 17,600,000 awr_RegulatoryAssetNotAccruingCarryingCosts / us-gaap_RegulatoryAssetAxis = awr_FlowThroughTaxesNetMember |
GOLDEN STATE WATER COMPANY |  |
Regulatory matters: |  |
Total | 125,704,000 us-gaap_NetRegulatoryAssets / dei_LegalEntityAxis = awr_GoldenStateWaterCompanyMember | 122,681,000 us-gaap_NetRegulatoryAssets / dei_LegalEntityAxis = awr_GoldenStateWaterCompanyMember
GOLDEN STATE WATER COMPANY | Various refunds to customers |  |
Regulatory matters: |  |
Total | (759,000)us-gaap_NetRegulatoryAssets / dei_LegalEntityAxis = awr_GoldenStateWaterCompanyMember / us-gaap_RegulatoryLiabilityAxis = us-gaap_RevenueSubjectToRefundMember | (4,292,000)us-gaap_NetRegulatoryAssets / dei_LegalEntityAxis = awr_GoldenStateWaterCompanyMember / us-gaap_RegulatoryLiabilityAxis = us-gaap_RevenueSubjectToRefundMember
GOLDEN STATE WATER COMPANY | WRAM, net of MCBA |  |
Regulatory matters: |  |
Total | (9,400,000)us-gaap_NetRegulatoryAssets / dei_LegalEntityAxis = awr_GoldenStateWaterCompanyMember / us-gaap_RegulatoryAssetAxis = awr_WaterRevenueAdjustmentMechanismNetOfModifiedCostBalancingAccountMember | 16,345,000 us-gaap_NetRegulatoryAssets / dei_LegalEntityAxis = awr_GoldenStateWaterCompanyMember / us-gaap_RegulatoryAssetAxis = awr_WaterRevenueAdjustmentMechanismNetOfModifiedCostBalancingAccountMember
GOLDEN STATE WATER COMPANY | Base revenue requirement adjustment mechanism |  |
Regulatory matters: |  |
Total | 7,761,000 us-gaap_NetRegulatoryAssets / dei_LegalEntityAxis = awr_GoldenStateWaterCompanyMember / us-gaap_RegulatoryAssetAxis = awr_BaseRevenueRequirementAdjustmentMechanismMember | 8,725,000 us-gaap_NetRegulatoryAssets / dei_LegalEntityAxis = awr_GoldenStateWaterCompanyMember / us-gaap_RegulatoryAssetAxis = awr_BaseRevenueRequirementAdjustmentMechanismMember
GOLDEN STATE WATER COMPANY | Costs deferred for future recovery on Aerojet case |  |
Regulatory matters: |  |
Total | 13,629,000 us-gaap_NetRegulatoryAssets / dei_LegalEntityAxis = awr_GoldenStateWaterCompanyMember / us-gaap_RegulatoryAssetAxis = awr_CostsDeferredForFutureRecoveryOnAerojetCaseMember | 14,763,000 us-gaap_NetRegulatoryAssets / dei_LegalEntityAxis = awr_GoldenStateWaterCompanyMember / us-gaap_RegulatoryAssetAxis = awr_CostsDeferredForFutureRecoveryOnAerojetCaseMember
GOLDEN STATE WATER COMPANY | Pension Costs and Other Postretirement Benefit Costs [Member] |  |
Regulatory matters: |  |
Total | 43,426,000 us-gaap_NetRegulatoryAssets / dei_LegalEntityAxis = awr_GoldenStateWaterCompanyMember / us-gaap_RegulatoryAssetAxis = awr_PensionCostsAndOtherPostretirementBenefitCostsMember | 20,241,000 us-gaap_NetRegulatoryAssets / dei_LegalEntityAxis = awr_GoldenStateWaterCompanyMember / us-gaap_RegulatoryAssetAxis = awr_PensionCostsAndOtherPostretirementBenefitCostsMember
GOLDEN STATE WATER COMPANY | Derivative unrealized loss |  |
Regulatory matters: |  |
Total | 3,339,000 us-gaap_NetRegulatoryAssets / dei_LegalEntityAxis = awr_GoldenStateWaterCompanyMember / us-gaap_RegulatoryAssetAxis = awr_DerivativeUnrealizedLossMember | 0 us-gaap_NetRegulatoryAssets / dei_LegalEntityAxis = awr_GoldenStateWaterCompanyMember / us-gaap_RegulatoryAssetAxis = awr_DerivativeUnrealizedLossMember
GOLDEN STATE WATER COMPANY | Flow-through taxes, net |  |
Regulatory matters: |  |
Total | 17,612,000 us-gaap_NetRegulatoryAssets / dei_LegalEntityAxis = awr_GoldenStateWaterCompanyMember / us-gaap_RegulatoryAssetAxis = awr_FlowThroughTaxesNetMember | 16,189,000 us-gaap_NetRegulatoryAssets / dei_LegalEntityAxis = awr_GoldenStateWaterCompanyMember / us-gaap_RegulatoryAssetAxis = awr_FlowThroughTaxesNetMember
GOLDEN STATE WATER COMPANY | Low income rate assistance balancing accounts |  |
Regulatory matters: |  |
Total | 9,109,000 us-gaap_NetRegulatoryAssets / dei_LegalEntityAxis = awr_GoldenStateWaterCompanyMember / us-gaap_RegulatoryAssetAxis = awr_LowIncomeRateAssistanceBalancingAccountsMember | 9,979,000 us-gaap_NetRegulatoryAssets / dei_LegalEntityAxis = awr_GoldenStateWaterCompanyMember / us-gaap_RegulatoryAssetAxis = awr_LowIncomeRateAssistanceBalancingAccountsMember
GOLDEN STATE WATER COMPANY | General rate case memorandum accounts |  |
Regulatory matters: |  |
Total | 4,731,000 us-gaap_NetRegulatoryAssets / dei_LegalEntityAxis = awr_GoldenStateWaterCompanyMember / us-gaap_RegulatoryAssetAxis = awr_GeneralRateCaseMemorandumAccountsMember | 15,645,000 us-gaap_NetRegulatoryAssets / dei_LegalEntityAxis = awr_GoldenStateWaterCompanyMember / us-gaap_RegulatoryAssetAxis = awr_GeneralRateCaseMemorandumAccountsMember
GOLDEN STATE WATER COMPANY | Other regulatory assets, net |  |
Regulatory matters: |  |
Total | $ 17,487,000 us-gaap_NetRegulatoryAssets / dei_LegalEntityAxis = awr_GoldenStateWaterCompanyMember / us-gaap_RegulatoryAssetAxis = awr_OtherRegulatoryAssetsNetMember | $ 25,086,000 us-gaap_NetRegulatoryAssets / dei_LegalEntityAxis = awr_GoldenStateWaterCompanyMember / us-gaap_RegulatoryAssetAxis = awr_OtherRegulatoryAssetsNetMember

X
- Definition Represents the regulatory asset not accruing carrying costs as of the balance sheet date. + References No definition available. + Details
Name: | awr_RegulatoryAssetNotAccruingCarryingCosts
Namespace Prefix: | awr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | awr_RegulatoryAssetsAndLiabilitiesLineItems
Namespace Prefix: | awr_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The net amount of all regulatory assets less all regulatory liabilities as of the end of the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 980 -SubTopic 340 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6499975&loc=d3e44250-110382 + Details
Name: | us-gaap_NetRegulatoryAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | dei_LegalEntityAxis=awr_GoldenStateWaterCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RegulatoryAssetAxis=awr_DerivativeUnrealizedLossMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RegulatoryAssetAxis=awr_FlowThroughTaxesNetMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RegulatoryAssetAxis=awr_PensionCostsAndOtherPostretirementBenefitCostsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |