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Bank segment (HEI only) - Derivative Financial Instruments (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Derivative instrument
Net gains (losses) recognized in the Statement of Income	$ 41	$ (600)	$ (3,409)
Derivative, gain (loss), statement of income or comprehensive income	Revenues	Revenues	Revenues
Not Designated as Hedging Instrument
Derivative instrument
Asset derivatives	$ 86	$ 27
Liability derivatives	18	0
Interest rate lock commitments
Derivative instrument
Notional amount	6,246	1,720
Fair value	86	9
Interest rate lock commitments | Not Designated as Hedging Instrument
Derivative instrument
Asset derivatives	86	9
Liability derivatives	0	0
Net gains (losses) recognized in the Statement of Income	77	(629)	$ (3,898)
Forward commitments
Derivative instrument
Notional amount	5,500	1,500
Fair value	(18)	18
Forward commitments | Not Designated as Hedging Instrument
Derivative instrument
Asset derivatives	0	18
Liability derivatives	18	0
Net gains (losses) recognized in the Statement of Income	$ (36)	$ 29	$ 489

X

- Definition

Fair value, after offset of derivative liability, of 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, before offset against an obligation to return collateral under a master netting arrangement. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

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Fair value, after offset of derivative asset, of 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, elected not to be and before offset against a right to receive collateral under a master netting arrangement. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

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Fair value of the assets less the liabilities of a derivative or group of derivatives.

+ References

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Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

+ References

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Indicates line item in statement of income or comprehensive income that includes gain (loss) from derivative.

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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.

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Nominal or face amount used to calculate payment on derivative.

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