XML 192 R138.htm IDEA: XBRL DOCUMENT
v3.22.0.1

Fair value measurements - Fair Value Measurements on a Recurring Basis (Details) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($)
Fair value measurements on a recurring and nonrecurring basis |  |
Available-for-sale investment securities | $ 2,574,618 | $ 1,970,417
Discount rate |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Mortgage revenue bonds, measurement input | 0.0207 |
Mortgage revenue bonds |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Balance, January 1 | $ 27,185 | 28,597
Principal payments received | (11,758) | (1,641)
Purchases | 0 | 229
Unrealized gain (loss) included in other comprehensive income | 0 | 0
Balance, December 31 | 15,427 | 27,185
Fair value measurements on a recurring basis | Level 1 |  |
Fair value measurements on a recurring and nonrecurring basis |  |
Derivative assets | 0 | 0
Derivative liabilities | 11 | 500
Fair value measurements on a recurring basis | Level 1 | Bank |  |
Fair value measurements on a recurring and nonrecurring basis |  |
Available-for-sale investment securities | 0 | 0
Fair value measurements on a recurring basis | Level 1 | Bank | Interest rate lock commitments |  |
Fair value measurements on a recurring and nonrecurring basis |  |
Derivative assets | 0 | 0
Fair value measurements on a recurring basis | Level 1 | Bank | Interest rate swap |  |
Fair value measurements on a recurring and nonrecurring basis |  |
Derivative assets | 0 | 0
Fair value measurements on a recurring basis | Level 1 | Bank | Forward commitments |  |
Fair value measurements on a recurring and nonrecurring basis |  |
Derivative liabilities | 11 | 500
Fair value measurements on a recurring basis | Level 1 | Bank | Mortgage-backed securities — issued or guaranteed by U.S. Government agencies or sponsored agencies |  |
Fair value measurements on a recurring and nonrecurring basis |  |
Available-for-sale investment securities | 0 | 0
Fair value measurements on a recurring basis | Level 1 | Bank | U.S. Treasury and federal agency obligations |  |
Fair value measurements on a recurring and nonrecurring basis |  |
Available-for-sale investment securities | 0 | 0
Fair value measurements on a recurring basis | Level 1 | Bank | Corporate bonds |  |
Fair value measurements on a recurring and nonrecurring basis |  |
Available-for-sale investment securities | 0 | 0
Fair value measurements on a recurring basis | Level 1 | Bank | Mortgage revenue bonds |  |
Fair value measurements on a recurring and nonrecurring basis |  |
Available-for-sale investment securities | 0 | 0
Fair value measurements on a recurring basis | Level 1 | Other | Interest rate swap |  |
Fair value measurements on a recurring and nonrecurring basis |  |
Derivative liabilities | 0 | 0
Fair value measurements on a recurring basis | Level 2 |  |
Fair value measurements on a recurring and nonrecurring basis |  |
Derivative assets | 909 | 4,536
Derivative liabilities | 5,271 | 4,530
Fair value measurements on a recurring basis | Level 2 | Bank |  |
Fair value measurements on a recurring and nonrecurring basis |  |
Available-for-sale investment securities | 2,559,191 | 1,943,232
Fair value measurements on a recurring basis | Level 2 | Bank | Interest rate lock commitments |  |
Fair value measurements on a recurring and nonrecurring basis |  |
Derivative assets | 638 | 4,536
Fair value measurements on a recurring basis | Level 2 | Bank | Interest rate swap |  |
Fair value measurements on a recurring and nonrecurring basis |  |
Derivative assets | 271 | 0
Fair value measurements on a recurring basis | Level 2 | Bank | Forward commitments |  |
Fair value measurements on a recurring and nonrecurring basis |  |
Derivative liabilities | 0 | 0
Fair value measurements on a recurring basis | Level 2 | Bank | Mortgage-backed securities — issued or guaranteed by U.S. Government agencies or sponsored agencies |  |
Fair value measurements on a recurring and nonrecurring basis |  |
Available-for-sale investment securities | 2,437,923 | 1,849,559
Fair value measurements on a recurring basis | Level 2 | Bank | U.S. Treasury and federal agency obligations |  |
Fair value measurements on a recurring and nonrecurring basis |  |
Available-for-sale investment securities | 90,090 | 62,322
Fair value measurements on a recurring basis | Level 2 | Bank | Corporate bonds |  |
Fair value measurements on a recurring and nonrecurring basis |  |
Available-for-sale investment securities | 31,178 | 31,351
Fair value measurements on a recurring basis | Level 2 | Bank | Mortgage revenue bonds |  |
Fair value measurements on a recurring and nonrecurring basis |  |
Available-for-sale investment securities | 0 | 0
Fair value measurements on a recurring basis | Level 2 | Other | Interest rate swap |  |
Fair value measurements on a recurring and nonrecurring basis |  |
Derivative liabilities | 5,271 | 4,530
Fair value measurements on a recurring basis | Level 3 |  |
Fair value measurements on a recurring and nonrecurring basis |  |
Derivative assets | 0 | 0
Derivative liabilities | 0 | 0
Fair value measurements on a recurring basis | Level 3 | Bank |  |
Fair value measurements on a recurring and nonrecurring basis |  |
Available-for-sale investment securities | 15,427 | 27,185
Fair value measurements on a recurring basis | Level 3 | Bank | Interest rate lock commitments |  |
Fair value measurements on a recurring and nonrecurring basis |  |
Derivative assets | 0 | 0
Fair value measurements on a recurring basis | Level 3 | Bank | Interest rate swap |  |
Fair value measurements on a recurring and nonrecurring basis |  |
Derivative assets | 0 | 0
Fair value measurements on a recurring basis | Level 3 | Bank | Forward commitments |  |
Fair value measurements on a recurring and nonrecurring basis |  |
Derivative liabilities | 0 | 0
Fair value measurements on a recurring basis | Level 3 | Bank | Mortgage-backed securities — issued or guaranteed by U.S. Government agencies or sponsored agencies |  |
Fair value measurements on a recurring and nonrecurring basis |  |
Available-for-sale investment securities | 0 | 0
Fair value measurements on a recurring basis | Level 3 | Bank | U.S. Treasury and federal agency obligations |  |
Fair value measurements on a recurring and nonrecurring basis |  |
Available-for-sale investment securities | 0 | 0
Fair value measurements on a recurring basis | Level 3 | Bank | Corporate bonds |  |
Fair value measurements on a recurring and nonrecurring basis |  |
Available-for-sale investment securities | 0 | 0
Fair value measurements on a recurring basis | Level 3 | Bank | Mortgage revenue bonds |  |
Fair value measurements on a recurring and nonrecurring basis |  |
Available-for-sale investment securities | 15,427 | 27,185
Fair value measurements on a recurring basis | Level 3 | Other | Interest rate swap |  |
Fair value measurements on a recurring and nonrecurring basis |  |
Derivative liabilities | $ 0 | $ 0

X
- Definition Amount excluding accrued interest, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454 + Details
Name: | us-gaap_DebtSecuritiesAvailableForSaleExcludingAccruedInterest
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Value of input used to measure investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258 + Details
Name: | us-gaap_DebtSecuritiesAvailableForSaleMeasurementInput
Namespace Prefix: | us-gaap_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | instant

X
- Definition Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=99393222&loc=SL20226008-175313 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=99393222&loc=SL20226052-175313 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=123594938&loc=d3e13433-108611 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 + Details
Name: | us-gaap_DerivativeAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=99393222&loc=SL20226008-175313 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=123594938&loc=d3e13433-108611 Reference 4: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=99393222&loc=SL20226052-175313 + Details
Name: | us-gaap_DerivativeLiabilities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
Name: | us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationCalculationRollForward
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of gain (loss) recognized in other comprehensive income (OCI) from asset measured at fair value on recurring basis using unobservable input (level 3). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1a) -URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258 + Details
Name: | us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of purchases of financial instrument classified as an asset measured using 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 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258 + Details
Name: | us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of settlement of financial instrument classified as an asset measured using 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 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258 + Details
Name: | us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Fair value of financial instrument classified as an asset measured using 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 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258 + Details
Name: | us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputDiscountRateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_AssetBackedSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByMeasurementFrequencyAxis=us-gaap_FairValueMeasurementsRecurringMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel1Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=he_BankingSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_InterestRateLockCommitmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_InterestRateSwapMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DerivativeInstrumentRiskAxis=us-gaap_ForwardContractsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_USTreasuryAndGovernmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_CorporateBondSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=us-gaap_AllOtherSegmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |