Bank segment (HEI only) - Credit Risk Profile - Nonaccrual Loans (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Credit risk profile based on nonaccrual loans
With a Related ACL	$ 37,764	$ 36,491
Without a Related ACL	7,210	10,905
Total	44,974	47,396
Total troubled debt restructured loans accruing interest	24,917	27,078
Commercial
Credit risk profile based on nonaccrual loans
With a Related ACL	1,446	1,819
Without a Related ACL	692	3,328
Total	2,138	5,147
Total troubled debt restructured loans accruing interest	7,860	6,108
Consumer
Credit risk profile based on nonaccrual loans
With a Related ACL	1,845	3,935
Without a Related ACL	0	0
Total	1,845	3,935
Total troubled debt restructured loans accruing interest	52	54
Residential 1-4 family \| Real estate
Credit risk profile based on nonaccrual loans
With a Related ACL	16,045	8,991
Without a Related ACL	3,703	2,835
Total	19,748	11,826
Total troubled debt restructured loans accruing interest	6,949	7,932
Commercial real estate \| Real estate
Credit risk profile based on nonaccrual loans
With a Related ACL	14,104	15,847
Without a Related ACL	1,221	2,875
Total	15,325	18,722
Total troubled debt restructured loans accruing interest	3,055	3,281
Home equity line of credit \| Real estate
Credit risk profile based on nonaccrual loans
With a Related ACL	4,227	5,791
Without a Related ACL	1,294	1,567
Total	5,521	7,358
Total troubled debt restructured loans accruing interest	6,021	8,148
Residential land \| Real estate
Credit risk profile based on nonaccrual loans
With a Related ACL	97	108
Without a Related ACL	300	300
Total	397	408
Total troubled debt restructured loans accruing interest	980	1,555
Commercial construction \| Real estate
Credit risk profile based on nonaccrual loans
With a Related ACL	0	0
Without a Related ACL	0	0
Total	0	0
Total troubled debt restructured loans accruing interest	0	0
Residential construction \| Real estate
Credit risk profile based on nonaccrual loans
With a Related ACL	0	0
Without a Related ACL	0	0
Total	0	0
Total troubled debt restructured loans accruing interest	$ 0	$ 0

Financing Receivable, Nonaccrual, With Allowance

No definition available.

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- Definition

Amount, after troubled debt restructuring, of modified financing receivable.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953676-111524

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- Definition

Amount of financing receivable on nonaccrual status with no allowance for credit loss.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 16
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919258-210447

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- Definition

Amount of financing receivable on nonaccrual status.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 7
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123577603&loc=d3e5111-111524

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 16
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919258-210447

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher SEC
-Name Regulation S-K (SK)
-Number 229
-Section 1405
-Paragraph (a)
-Subparagraph (3)

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher SEC
-Name Regulation S-K (SK)
-Number 229
-Section 1405
-Paragraph (a)
-Subparagraph (2)

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- 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.

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