XML 98 R82.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Employee Benefit Plans Employee Benefit Plans 14 (Details) - USD ($) $ in Thousands | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Amounts recognized on the balance sheets: |  |  |  |  |  |
Non-current liabilities |  |  |  | $ 57,636 | $ 57,695 |
SERP |  |  |  |  |  |
Amounts recognized on the balance sheets: |  |  |  |  |  |
Current liabilities |  |  |  | (433) | (409) |
Non-current liabilities |  |  |  | 24,084 | 23,653 |
Net amount recognized |  |  |  | (24,517) | (24,062) |
Amounts recognized in regulatory assets consist of: |  |  |  |  |  |
Prior service cost (credit) |  |  |  | 0 | 0 |
Net loss |  |  |  | 5,403 | 7,556 |
Regulatory assets (liabilities) | $ 7,556 | $ 6,474 | $ 6,474 | 5,403 | 7,556 | $ 6,474
Unfunded accrued pension cost |  |  |  | 19,114 | 16,506 |
Net liability (asset) recognized |  |  |  | 24,517 | 24,062 |
Changes in plan assets and benefit obligations recognized in regulatory assets: |  |  |  |  |  |
Regulatory asset at beginning of year | 7,556 | 6,474 |  |  |  |
Net (gain) loss | (1,104) | 1,872 |  |  |  |
Amortization of prior service (cost) credit | 0 | (12) |  |  |  |
Amortization of net gain (loss) | (1,049) | (778) |  |  |  |
Change in regulatory asset | (2,153) | 1,082 |  |  |  |
Regulatory asset (liability) at end of year | 5,403 | 7,556 | 6,474 |  |  |
Net periodic pension costs | 3,033 | 2,612 | $ 1,859 |  |  |
Change in regulatory asset | (2,153) | 1,082 |  |  |  |
Total recognized in net periodic pension cost and regulatory asset (liability) | 880 | 3,694 |  |  |  |
Estimated amounts that will be amortized from regulatory asset over the next fiscal year: |  |  |  |  |  |
Initial net asset (obligation) | 0 | 0 |  |  |  |
Prior service cost | 0 | 0 |  |  |  |
Net gain (loss) | $ (471) | $ (1,049) |  |  |  |
Additional year-end information for plans with an accumulated benefit obligation in excess of plan assets: |  |  |  |  |  |
Projected benefit obligation |  |  |  | 24,517 | 24,062 | $ 20,783
Accumulated benefit obligation |  |  |  | 21,229 | 20,742 |
Fair value of plan assets |  |  |  | $ 0 | $ 0 |
Weighted-average assumptions used to determine benefit obligations at December 31: |  |  |  |  |  |
Discount rate |  |  |  | 4.40% | 3.72% |
Rate of compensation increase |  |  |  | 4.00% | 4.00% |

X
- Definition Represents the amortization of net losses that are recognized as a component of regulatory assets (liability). + References No definition available. + Details
Name: | awr_DefinedBenefitPlanAmortizationOfGainsLossesRegulatoryAssets
Namespace Prefix: | awr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Represents the amounts related to initial net obligation expected to be recognized as components of regulatory asset over the next fiscal year that follows the most recent annual statement of financial position presented. + References No definition available. + Details
Name: | awr_DefinedBenefitPlanAmortizationOfInitialNetObligationFromRegulatoryAsset
Namespace Prefix: | awr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Represents the net gains (losses) that are not recognized immediately and are expected to be recognized as components of regulatory asset over the next fiscal year that follows the most recent annual statement of financial position presented. + References No definition available. + Details
Name: | awr_DefinedBenefitPlanAmortizationOfNetGainsLossesFromRegulatoryAsset
Namespace Prefix: | awr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Represents the prior service cost or credit expected to be recognized as components of regulatory asset over the next fiscal year that follows the most recent annual statement of financial position presented. + References No definition available. + Details
Name: | awr_DefinedBenefitPlanAmortizationOfNetPriorServiceCostCreditFromRegulatoryAsset
Namespace Prefix: | awr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Represents the amortization of prior service cost (credit) that are recognized as a component of regulatory assets (liability). + References No definition available. + Details
Name: | awr_DefinedBenefitPlanAmortizationOfPriorServiceCostCreditRegulatoryAssets
Namespace Prefix: | awr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Represents the net gains and losses recognized in regulatory asset (liability). + References No definition available. + Details
Name: | awr_DefinedBenefitPlanAmountsRecognizedInRegulatoryAssetLiabilityNetGainsLosses
Namespace Prefix: | awr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

X
- Definition Represents the amount recognized in regulatory asset (liability). + References No definition available. + Details
Name: | awr_DefinedBenefitPlanAmountsRecognizedinRegulatoryAssetLiability
Namespace Prefix: | awr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Represents the prior service cost (credit) recognized in regulatory asset (liability). + References No definition available. + Details
Name: | awr_DefinedBenefitPlanAmountsRecognizedinRegulatoryAssetLiabilityPriorServiceCostCredit
Namespace Prefix: | awr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Defined Benefit Plan, Amounts Recognized in Regulatory Assets (Liabilities), Net + References No definition available. + Details
Name: | awr_DefinedBenefitPlanAmountsRecognizedinRegulatoryAssetsLiabilitiesNet
Namespace Prefix: | awr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Represents the amount of unfunded accrued pension cost recognized in regulatory assets that is associated with the defined benefit pension plans and other post-retirement defined benefit plans. + References No definition available. + Details
Name: | awr_DefinedBenefitPlanAmountsUnfundedAccruedPensionCost
Namespace Prefix: | awr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

X
- Definition Represents the net amount of loss (gain) that are recognized as a component of regulatory assets (liability). + References No definition available. + Details
Name: | awr_DefinedBenefitPlanCostRecognizedInRegulatoryAssetsLiability
Namespace Prefix: | awr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

X
- Definition Represents the net amount of loss (gain) that are recognized as a component of regulatory assets. + References No definition available. + Details
Name: | awr_DefinedBenefitPlanNetGainsLossesRegulatoryAssets
Namespace Prefix: | awr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Represents the amount recognized in net periodic pension cost and regulatory asset. + References No definition available. + Details
Name: | awr_DefinedBenefitPlanNetPeriodicBenefitCostAndCostRecognizedInRegulatoryAssets
Namespace Prefix: | awr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of asset (liability), recognized in statement of financial position, for defined benefit pension and other postretirement plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64852052&loc=d3e1703-114919 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanAmountsRecognizedInBalanceSheet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

X
- Definition Weighted average rate for present value of future retirement benefits cash flows, used to determine benefit obligation of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(1) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Weighted average rate increase of compensation, used to determine benefit obligation of defined benefit plan. Plan includes, but is not limited to, pay-related defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(2) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of actuarial present value of benefits attributed to service rendered by employee for defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanBenefitObligation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of net periodic benefit cost (credit) for defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

X
- Definition Amount of accumulated benefit obligation for defined benefit pension plan with accumulated benefit obligation in excess of plan assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e2417-114920 + Details
Name: | us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Fair value of plan assets for defined benefit pension plan with accumulated benefit obligation in excess of plan assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e2417-114920 + Details
Name: | us-gaap_DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateFairValueOfPlanAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

X
- Definition Amount of liability, recognized in statement of financial position, for defined benefit pension and other postretirement plans, classified as current. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=64852052&loc=d3e1731-114919 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(20)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64852052&loc=d3e1703-114919 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
Name: | us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of liability, recognized in statement of financial position, for defined benefit pension and other postretirement plans, classified as noncurrent. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=64852052&loc=d3e1731-114919 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(24)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64852052&loc=d3e1703-114919 + Details
Name: | us-gaap_PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_RetirementPlanTypeAxis=us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |