XML 20 R24.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Regulatory Matters: (Details 2) (GSWC, USD $) |  |  | 1 Months Ended | 3 Months Ended | 6 Months Ended |  | 6 Months Ended | 1 Months Ended | 6 Months Ended |  |  | 6 Months Ended |  | 6 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jun. 30, 2013 | Dec. 31, 2012 | Apr. 30, 2012 WRAM, net of MCBA | Jun. 30, 2013 WRAM, net of MCBA | Jun. 30, 2012 WRAM, net of MCBA | Jun. 30, 2013 WRAM, net of MCBA | Jun. 30, 2012 WRAM, net of MCBA | Dec. 31, 2012 WRAM, net of MCBA | Jun. 30, 2013 WRAM, net of MCBA Minimum | Apr. 30, 2012 WRAM, net of MCBA Maximum | Jun. 30, 2013 WRAM, net of MCBA Maximum | Jun. 30, 2013 WRAM | Mar. 31, 2013 WRAM | Jun. 30, 2013 WRAM Minimum | Jun. 30, 2013 WRAM Maximum | Jun. 30, 2013 Modified Cost Balancing Account | Jun. 30, 2013 Base revenue requirement adjustment mechanism | May 31, 2013 Base revenue requirement adjustment mechanism | Dec. 31, 2012 Base revenue requirement adjustment mechanism
Regulatory matters: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Commercial paper, term |  |  |  |  |  | 90 days |  |  |  |  |  |  |  |  |  |  |  |  |
Amount billed to customers as surcharges |  |  |  | $ 7,100,000 | $ 4,200,000 | $ 10,600,000 | $ 7,600,000 |  |  |  |  |  |  |  |  |  |  |  |
Under (over) collection | 184,893,000 | 176,015,000 |  | 38,003,000 |  | 38,003,000 |  | 42,574,000 |  |  |  | 51,100,000 | 23,800,000 |  |  | (13,100,000) | 8,265,000 | 2,300,000 | 6,833,000
Recovery periods |  |  |  |  |  |  |  |  | 18 months |  | 24 months |  |  | 12 months | 18 months |  |  |  |
Under-collection balances as a percentage of adopted annual revenues |  |  |  |  |  |  |  |  |  | 15.00% |  |  |  |  |  |  |  |  |
Recovery period for under-collection balances that are up to 15% of adopted annual revenues |  |  |  |  |  |  |  |  |  | 18 months |  |  |  |  |  |  |  |  |
Annual surcharges as a percentage of the last authorized revenue requirement |  |  | 10.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Period of surcharge approved |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 36 months |  |
Increase in revenue requirement recoverable through surcharges collected |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 1,800,000 |  |

X
- Definition Represents annual surcharges as a percentage of the last authorized revenue requirement. + References No definition available. + Details
Name: | awr_AnnualSurchargesAsPercentageOfLastAuthorizedRevenueRequirement
Namespace Prefix: | awr_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the amount of increase in revenue requirement for difference between the allocated general office costs authorized by the CPUC November 2010 Decision and what was then in rates for allocated general office costs. + References No definition available. + Details
Name: | awr_IncreaseInRevenueRequirementRecoverableThroughSurcharges
Namespace Prefix: | awr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Represents the term associated with a fixed-term security. + References No definition available. + Details
Name: | awr_InvestmentTerm
Namespace Prefix: | awr_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the period of surcharge approved by CPUC for amounts collected through December 2013 to be applied to 2011. + References No definition available. + Details
Name: | awr_PeriodOfSurchargeApproved
Namespace Prefix: | awr_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the recovery period for under-collection balances that are up to 15 percent of adopted annual revenues. + References No definition available. + Details
Name: | awr_RecoveryPeriodForUnderCollectionBalancesThatAreUpTo15PercentOfAdoptedAnnualRevenues
Namespace Prefix: | awr_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents amount billed to customers as surcharges. + References No definition available. + Details
Name: | awr_RegulatoryAssetAmountBilledToCustomersAsSurcharges
Namespace Prefix: | awr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Represents the recovery periods of the surcharge billed to the customers. + References No definition available. + Details
Name: | awr_RegulatoryAssetRecoveryPeriods
Namespace Prefix: | awr_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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

X
- Definition Represents the under-collection balances as a percentage of adopted annual revenues. + References No definition available. + Details
Name: | awr_UnderCollectionBalancesAsPercentageOfAdoptedAnnualRevenues
Namespace Prefix: | awr_
Data Type: | num:percentItemType
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