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

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Namespace Prefix:	awr_
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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

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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

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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

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Balance Type:	debit
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