XML 31 R18.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Regulatory Matters: (Tables) | 3 Months Ended
--- | ---
Mar. 31, 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) |  | March 31, 2018 |  | December 31, 2017
GSWC |  |  |  |
Water Revenue Adjustment Mechanism, net of Modified Cost Balancing Account |  | $ | 29,011 |  |  | $ | 29,556 |
Costs deferred for future recovery on Aerojet case |  | 10,510 |  |  | 10,656 |
Pensions and other post-retirement obligations (Note 8) |  | 32,178 |  |  | 33,019 |
Derivative unrealized loss (Note 5) |  | 2,625 |  |  | 2,941 |
Low income rate assistance balancing accounts |  | 5,640 |  |  | 5,972 |
General rate case memorandum accounts |  | 9,264 |  |  | 10,522 |
Excess deferred income taxes |  | (82,680 | ) |  | (83,231 | )
Flow-through taxes, net |  | (17,133 | ) |  | (17,716 | )
Other regulatory assets |  | 15,449 |  |  | 14,875 |
Various refunds to customers |  | (9,592 | ) |  | (4,552 | )
Total |  | $ | (4,728 | ) |  | $ | 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