XML 31 R18.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Regulatory Matters: (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2018
Regulated Operations [Abstract] |
Schedule of regulatory assets, less regulatory liabilities in the consolidated balance sheets for continuing operations | Regulatory assets, less regulatory liabilities, included in the consolidated balance sheets are as follows:
(dollars in thousands) |  | September 30, 2018 |  | December 31, 2017
GSWC |  |  |  |
Water Revenue Adjustment Mechanism, net of Modified Cost Balancing Account |  | $ | 24,264 |  |  | $ | 29,556 |
Costs deferred for future recovery on Aerojet case |  | 9,809 |  |  | 10,656 |
Pensions and other post-retirement obligations (Note 8) |  | 31,066 |  |  | 33,019 |
Derivative unrealized loss (Note 5) |  | 1,143 |  |  | 2,941 |
Low income rate assistance balancing accounts |  | 3,660 |  |  | 5,972 |
General rate case memorandum accounts |  | 6,798 |  |  | 10,522 |
Other regulatory assets |  | 15,506 |  |  | 14,875 |
Excess deferred income taxes (Note 7) |  | (81,912 | ) |  | (83,231 | )
Flow-through taxes, net (Note 7) |  | (15,816 | ) |  | (17,716 | )
Tax Cuts and Jobs Act ("Tax Act") memorandum accounts |  | (8,274 | ) |  | — |
Various refunds to customers |  | (7,880 | ) |  | (4,552 | )
Total |  | $ | (21,636 | ) |  | $ | 2,042 |

X
- Definition Tabular disclosure of regulatory assets, less regulatory liabilities, included in consolidated balance sheets for continuing operations. + References No definition available. + Details
Name: | awr_ScheduleOfRegulatoryAssetsLiabilitiesTableTextBlock
Namespace Prefix: | awr_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_RegulatedOperationsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration