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Allowance for Doubtful Accounts (Tables) | 12 Months Ended
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Dec. 31, 2016
Allowance for Doubtful Accounts |
Schedule of provision for doubtful accounts charged to expense and accounts written off, net of recoveries | The table below presents Registrant’s provision for doubtful accounts charged to expense and accounts written off, net of recoveries. Provisions included in 2016 and 2015 for AWR and GSWC are as follows:
|  | AWR
|  | December 31,
(dollars in thousands) |  | 2016 |  | 2015
Balance at beginning of year |  | $ | 944 |  |  | $ | 892 |
Provision charged to expense |  | 619 |  |  | 870 |
Accounts written off, net of recoveries |  | (799 | ) |  | (818 | )
Balance at end of year |  | $ | 764 |  |  | $ | 944 |
Allowance for doubtful accounts related to accounts receivable-customer |  | $ | 702 |  |  | $ | 790 |
Allowance for doubtful accounts related to other accounts receivable |  | 62 |  |  | 154 |
Total allowance for doubtful accounts |  | $ | 764 |  |  | $ | 944 |
|  | GSWC
|  | December 31,
(dollars in thousands) |  | 2016 |  | 2015
Balance at beginning of year |  | $ | 919 |  |  | $ | 892 |
Provision charged to expense |  | 627 |  |  | 845 |
Accounts written off, net of recoveries |  | (785 | ) |  | (818 | )
Balance at end of year |  | $ | 761 |  |  | $ | 919 |
Allowance for doubtful accounts related to accounts receivable-customer |  | $ | 702 |  |  | $ | 790 |
Allowance for doubtful accounts related to other accounts receivable |  | 59 |  |  | 129 |
Total allowance for doubtful accounts |  | $ | 761 |  |  | $ | 919 |

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- Definition -- None. No documentation exists for this element. -- + References No definition available. + Details
Name: | awr_AllowanceForDoubtfulAccountsDisclosureAbstract
Namespace Prefix: | awr_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Tabular disclosure of the allowance for doubtful accounts of the entity. + References No definition available. + Details
Name: | awr_AllowanceForDoubtfulAccountsReceivableTableTextBlock
Namespace Prefix: | awr_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration