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Bank segment (HEI only) - Derivative Financial Instruments (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Derivative instrument
Net gains (losses) recognized in the Statement of Income	$ 3,781	$ 207	$ (59)
Not Designated as Hedging Instrument
Derivative instrument
Asset derivative	4,536	300
Liability derivative	500	45
Interest Rate Lock Commitments
Derivative instrument
Notional amount	120,980	23,171
Fair value	4,536	297
Interest Rate Lock Commitments | Not Designated as Hedging Instrument
Derivative instrument
Asset derivative	4,536	297
Liability derivative	0	0
Interest Rate Lock Commitments | Not Designated as Hedging Instrument | Mortgage banking income
Derivative instrument
Net gains (losses) recognized in the Statement of Income	4,239	206	(40)
Forward commitments
Derivative instrument
Notional amount	100,500	29,383
Fair value	(500)	(42)
Forward commitments | Not Designated as Hedging Instrument
Derivative instrument
Asset derivative	0	3
Liability derivative	500	45
Forward commitments | Not Designated as Hedging Instrument | Mortgage banking income
Derivative instrument
Net gains (losses) recognized in the Statement of Income	$ (458)	$ 1	$ (19)

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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- Definition

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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- Definition

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

+ References

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- Definition

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

+ References

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+ References

No definition available.

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Nominal or face amount used to calculate payment on derivative.

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