XML 39 R23.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Regulatory Matters: General Rate Case Memorandum Accounts and Other Regulatory Assets (Details) (USD $) | 3 Months Ended |  |  |  |  |  |  | 3 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | ---
Mar. 31, 2014 | Mar. 31, 2014 GSWC | Dec. 31, 2013 GSWC | Mar. 31, 2014 GSWC General rate case memorandum accounts | Dec. 31, 2013 GSWC General rate case memorandum accounts | Mar. 31, 2014 GSWC Other regulatory assets, net | Dec. 31, 2013 GSWC Other regulatory assets, net | Sep. 30, 2013 Minimum GSWC General rate case memorandum accounts | Sep. 30, 2013 Maximum GSWC General rate case memorandum accounts | Sep. 30, 2013 Majority GSWC General rate case memorandum accounts
Regulatory matters: |  |  |  |  |  |  |  |  |  |
Regulatory assets |  | $ 119,650,000 | $ 122,681,000 | $ 12,993,000 | $ 15,645,000 | $ 22,124,000 | $ 25,086,000 |  |  |
Net regulatory assets increase (decrease) due to settlement of rate case | $ 8,900,000 |  |  |  |  |  |  |  |  |
Regulatory asset recovery periods |  |  |  |  |  |  |  | 12 months | 24 months | 12 months

X
- Definition Represents the amount of increase or decrease to net regulatory assets due to settlement of rate case during the period. + References No definition available. + Details
Name: | awr_NetRegulatoryAssetsIncreaseDecreaseDueToSettlementOfRateCase
Namespace Prefix: | awr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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 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