XML 36 R23.htm IDEA: XBRL DOCUMENT v3.21.1

Derivative Instruments (Tables)

3 Months Ended

Mar. 31, 2021

GOLDEN STATE WATER COMPANY

Derivative Instruments, Gain (Loss) [Line Items]

Derivative Instruments

The following table presents changes in the fair value of the Level 3 derivatives for the three months ended March 31, 2021 and 2020. The change in fair value was due to an increase in energy prices during the three months ended March 31, 2021.

						For The Three Months Ended March 31,
(dollars in thousands)						2021						2020
Fair value at beginning of the period						$	(1,537)					$	(3,171)
Unrealized gains (losses) on purchased power contracts						2,761						(1,109)
Fair value at end of the period						$	1,224					$	(4,280)

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_DerivativeInstrumentsGainLossLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of financial instrument classified as a derivative asset (liability) after deduction of derivative liability (asset) using recurring unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19279-110258

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

+ Details

Name:	us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputReconciliationTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	dei_LegalEntityAxis=awr_GoldenStateWaterCompanyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: