XML 32 R26.htm IDEA: XBRL DOCUMENT
v3.24.3

Investment Securities (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2024
Investments, Debt and Equity Securities [Abstract] |
Schedule of Amortized Cost, Gross Unrealized Gains and Losses, and Fair Value of Investment Securities | The amortized cost, gross unrealized gains and losses, and fair value of the Company’s investment securities as of September 30, 2024 and December 31, 2023, were as follows:
(dollars in thousands) |  | Amortized Cost |  |  | Gross Unrealized Gains |  |  | Gross Unrealized Losses |  |  | Fair Value |
September 30, 2024 |  |  |  |  |  |  |  |  |  |  |  |
Available-for-Sale: |  |  |  |  |  |  |  |  |  |  |  |
Debt Securities Issued by the U.S. Treasury and Government Agencies |  | $ | 235,927 |  |  | $ | 324 |  |  | $ | (7,222 | ) |  | $ | 229,029 |
Debt Securities Issued by States and Political Subdivisions |  |  | 73,142 |  |  |  | — |  |  |  | (7,297 | ) |  |  | 65,845 |
Debt Securities Issued by U.S. Government-Sponsored Enterprises |  |  | 1,506 |  |  |  | — |  |  |  | (42 | ) |  |  | 1,464 |
Debt Securities Issued by Corporations |  |  | 703,910 |  |  |  | 104 |  |  |  | (30,623 | ) |  |  | 673,391 |
Mortgage-Backed Securities: |  |  |  |  |  |  |  |  |  |  |  |
Residential - Government Agencies |  |  | 716,933 |  |  |  | 309 |  |  |  | (68,653 | ) |  |  | 648,589 |
Residential - U.S. Government-Sponsored Enterprises |  |  | 773,520 |  |  |  | 99 |  |  |  | (85,799 | ) |  |  | 687,820 |
Commercial - Government Agencies or Sponsored Agencies |  |  | 264,129 |  |  |  | 107 |  |  |  | (20,050 | ) |  |  | 244,186 |
Total Mortgage-Backed Securities |  |  | 1,754,582 |  |  |  | 515 |  |  |  | (174,502 | ) |  |  | 1,580,595 |
Total |  | $ | 2,769,067 |  |  | $ | 943 |  |  | $ | (219,686 | ) |  | $ | 2,550,324 |
Held-to-Maturity: |  |  |  |  |  |  |  |  |  |  |  |
Debt Securities Issued by the U.S. Treasury and Government Agencies |  | $ | 131,836 |  |  | $ | — |  |  | $ | (11,986 | ) |  | $ | 119,850 |
Debt Securities Issued by Corporations |  |  | 10,556 |  |  |  | — |  |  |  | (1,759 | ) |  |  | 8,797 |
Mortgage-Backed Securities: |  |  |  |  |  |  |  |  |  |  |  |
Residential - Government Agencies |  |  | 1,553,811 |  |  |  | 73 |  |  |  | (227,281 | ) |  |  | 1,326,603 |
Residential - U.S. Government-Sponsored Enterprises |  |  | 2,585,212 |  |  |  | 273 |  |  |  | (316,257 | ) |  |  | 2,269,228 |
Commercial - Government Agencies or Sponsored Agencies |  |  | 428,830 |  |  |  | — |  |  |  | (80,712 | ) |  |  | 348,118 |
Total Mortgage-Backed Securities |  |  | 4,567,853 |  |  |  | 346 |  |  |  | (624,250 | ) |  |  | 3,943,949 |
Total |  | $ | 4,710,245 |  |  | $ | 346 |  |  | $ | (637,995 | ) |  | $ | 4,072,596 |
December 31, 2023 |  |  |  |  |  |  |  |  |  |  |  |
Available-for-Sale: |  |  |  |  |  |  |  |  |  |  |  |
Debt Securities Issued by the U.S. Treasury and Government Agencies |  | $ | 223,308 |  |  | $ | 361 |  |  | $ | (11,096 | ) |  | $ | 212,573 |
Debt Securities Issued by States and Political Subdivisions |  |  | 73,417 |  |  |  | — |  |  |  | (9,611 | ) |  |  | 63,806 |
Debt Securities Issued by U.S. Government-Sponsored Enterprises |  |  | 1,556 |  |  |  | — |  |  |  | (80 | ) |  |  | 1,476 |
Debt Securities Issued by Corporations |  |  | 706,002 |  |  |  | 142 |  |  |  | (48,443 | ) |  |  | 657,701 |
Mortgage-Backed Securities: |  |  |  |  |  |  |  |  |  |  |  |
Residential - Government Agencies |  |  | 713,918 |  |  |  | 194 |  |  |  | (84,785 | ) |  |  | 629,327 |
Residential - U.S. Government-Sponsored Enterprises |  |  | 818,296 |  |  |  | 7 |  |  |  | (109,176 | ) |  |  | 709,127 |
Commercial - Government Agencies or Sponsored Agencies |  |  | 157,515 |  |  |  | — |  |  |  | (22,592 | ) |  |  | 134,923 |
Total Mortgage-Backed Securities |  |  | 1,689,729 |  |  |  | 201 |  |  |  | (216,553 | ) |  |  | 1,473,377 |
Total |  | $ | 2,694,012 |  |  | $ | 704 |  |  | $ | (285,783 | ) |  | $ | 2,408,933 |
Held-to-Maturity: |  |  |  |  |  |  |  |  |  |  |  |
Debt Securities Issued by the U.S. Treasury and Government Agencies |  | $ | 131,742 |  |  | $ | — |  |  | $ | (15,211 | ) |  | $ | 116,531 |
Debt Securities Issued by Corporations |  |  | 11,483 |  |  |  | — |  |  |  | (1,998 | ) |  |  | 9,485 |
Mortgage-Backed Securities: |  |  |  |  |  |  |  |  |  |  |  |
Residential - Government Agencies |  |  | 1,674,076 |  |  |  | 20 |  |  |  | (265,493 | ) |  |  | 1,408,603 |
Residential - U.S. Government-Sponsored Enterprises |  |  | 2,744,094 |  |  |  | 9 |  |  |  | (369,965 | ) |  |  | 2,374,138 |
Commercial - Government Agencies or Sponsored Agencies |  |  | 435,940 |  |  |  | — |  |  |  | (91,060 | ) |  |  | 344,880 |
Total Mortgage-Backed Securities |  |  | 4,854,110 |  |  |  | 29 |  |  |  | (726,518 | ) |  |  | 4,127,621 |
Total |  | $ | 4,997,335 |  |  | $ | 29 |  |  | $ | (743,727 | ) |  | $ | 4,253,637 |
Analysis of the Contractual Maturities of Investment Securities | The table below presents an analysis of the contractual maturities of the Company’s investment securities as of September 30, 2024. Debt securities issued by government agencies (Small Business Administration securities) and mortgage-backed securities are disclosed separately in the table below as these investment securities may prepay prior to their scheduled contractual maturity dates.
(dollars in thousands) |  | Amortized Cost |  |  | Fair Value |
Available-for-Sale: |  |  |  |  |  |
Due in One Year or Less |  | $ | 23,898 |  |  | $ | 23,656 |
Due After One Year Through Five Years |  |  | 442,494 |  |  |  | 421,354 |
Due After Five Years Through Ten Years |  |  | 470,158 |  |  |  | 446,599 |
|  |  | 936,550 |  |  |  | 891,609 |
Debt Securities Issued by Government Agencies |  |  | 77,935 |  |  |  | 78,120 |
Mortgage-Backed Securities: |  |  |  |  |  |
Residential - Government Agencies |  |  | 716,933 |  |  |  | 648,589 |
Residential - U.S. Government-Sponsored Enterprises |  |  | 773,520 |  |  |  | 687,820 |
Commercial - Government Agencies or Sponsored Agencies |  |  | 264,129 |  |  |  | 244,186 |
Total Mortgage-Backed Securities |  |  | 1,754,582 |  |  |  | 1,580,595 |
Total |  | $ | 2,769,067 |  |  | $ | 2,550,324 |
Held-to-Maturity: |  |  |  |  |  |
Due in One Year or Less |  | $ | 2,499 |  |  | $ | 2,422 |
Due After One Year Through Five Years |  |  | 79,801 |  |  |  | 73,930 |
Due After Five Year Through Ten Years |  |  | 60,092 |  |  |  | 52,295 |
|  |  | 142,392 |  |  |  | 128,647 |
Mortgage-Backed Securities: |  |  |  |  |  |
Residential - Government Agencies |  |  | 1,553,811 |  |  |  | 1,326,603 |
Residential - U.S. Government-Sponsored Enterprises |  |  | 2,585,212 |  |  |  | 2,269,228 |
Commercial - Government Agencies or Sponsored Agencies |  |  | 428,830 |  |  |  | 348,118 |
Total Mortgage-Backed Securities |  |  | 4,567,853 |  |  |  | 3,943,949 |
Total |  | $ | 4,710,245 |  |  | $ | 4,072,596 |
Schedule of Gains and Losses on Sales of Investment Securities | The table below presents the gains and losses from the sales of investment securities for the three and nine months ended September 30, 2024 and 2023:
|  | Three Months Ended September 30, |  |  | Nine Months Ended September 30, |
(dollars in thousands) |  | 2024 |  |  | 2023 |  |  | 2024 |  |  | 2023 |
Gross Gains on Sales of Investment Securities |  | $ | — |  |  | $ | 145 |  |  | $ | — |  |  | $ | 145 |
Gross Losses on Sales of Investment Securities |  |  | (1,103 | ) |  |  | (6,879 | ) |  |  | (4,201 | ) |  |  | (9,981 | )
Net Gains (Losses) on Sales of Investment Securities |  | $ | (1,103 | ) |  | $ | (6,734 | ) |  | $ | (4,201 | ) |  | $ | (9,836 | )
Schedule of AFS Debt Securities in an Unrealized Loss Position | The following table summarizes the Company’s AFS debt securities in an unrealized loss position for which an allowance for credit losses was no t deemed necessary, aggregated by major security type and length of time in a continuous unrealized loss position:
|  | Less Than 12 Months |  |  | 12 Months or Longer |  |  | Total |
(dollars in thousands) |  | Fair Value |  |  | Gross Unrealized Losses |  |  | Fair Value |  |  | Gross Unrealized Losses |  |  | Fair Value |  |  | Gross Unrealized Losses |
September 30, 2024 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Available-for-Sale: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Securities Issued by the U.S. Treasury and Government Agencies |  | $ | 32,603 |  |  | $ | (66 | ) |  | $ | 157,416 |  |  | $ | (7,156 | ) |  | $ | 190,019 |  |  | $ | (7,222 | )
Debt Securities Issued by States and Political Subdivisions |  |  | — |  |  |  | — |  |  |  | 65,810 |  |  |  | (7,297 | ) |  |  | 65,810 |  |  |  | (7,297 | )
Debt Securities Issued by U.S. Government- Sponsored Enterprises |  |  | — |  |  |  | — |  |  |  | 1,464 |  |  |  | (42 | ) |  |  | 1,464 |  |  |  | (42 | )
Debt Securities Issued by Corporations |  |  | — |  |  |  | — |  |  |  | 598,286 |  |  |  | (30,623 | ) |  |  | 598,286 |  |  |  | (30,623 | )
Mortgage-Backed Securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Residential - Government Agencies |  |  | 2,211 |  |  |  | (1 | ) |  |  | 565,187 |  |  |  | (68,652 | ) |  |  | 567,398 |  |  |  | (68,653 | )
Residential - U.S. Government-Sponsored Enterprises |  |  | — |  |  |  | — |  |  |  | 662,402 |  |  |  | (85,799 | ) |  |  | 662,402 |  |  |  | (85,799 | )
Commercial - Government Agencies or Sponsored Agencies |  |  | 48,998 |  |  |  | — |  |  |  | 132,647 |  |  |  | (20,050 | ) |  |  | 181,645 |  |  |  | (20,050 | )
Total Mortgage-Backed Securities |  |  | 51,209 |  |  |  | (1 | ) |  |  | 1,360,236 |  |  |  | (174,501 | ) |  |  | 1,411,445 |  |  |  | (174,502 | )
Total |  | $ | 83,812 |  |  | $ | (67 | ) |  | $ | 2,183,212 |  |  | $ | (219,619 | ) |  | $ | 2,267,024 |  |  | $ | (219,686 | )
December 31, 2023 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Available-for-Sale: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Securities Issued by the U.S. Treasury and Government Agencies |  | $ | 7,171 |  |  | $ | (16 | ) |  | $ | 155,341 |  |  | $ | (11,080 | ) |  | $ | 162,512 |  |  | $ | (11,096 | )
Debt Securities Issued by States and Political Subdivisions |  |  | 237 |  |  |  | (2 | ) |  |  | 63,509 |  |  |  | (9,609 | ) |  |  | 63,746 |  |  |  | (9,611 | )
Debt Securities Issued by U.S. Government- Sponsored Enterprises |  |  | — |  |  |  | — |  |  |  | 1,476 |  |  |  | (80 | ) |  |  | 1,476 |  |  |  | (80 | )
Debt Securities Issued by Corporations |  |  | 220,987 |  |  |  | (4,013 | ) |  |  | 411,573 |  |  |  | (44,430 | ) |  |  | 632,560 |  |  |  | (48,443 | )
Mortgage-Backed Securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Residential - Government Agencies |  |  | 9,628 |  |  |  | (13 | ) |  |  | 613,926 |  |  |  | (84,772 | ) |  |  | 623,554 |  |  |  | (84,785 | )
Residential - U.S. Government-Sponsored Enterprises |  |  | — |  |  |  | — |  |  |  | 708,797 |  |  |  | (109,176 | ) |  |  | 708,797 |  |  |  | (109,176 | )
Commercial - Government Agencies or Sponsored Agencies |  |  | — |  |  |  | — |  |  |  | 134,923 |  |  |  | (22,592 | ) |  |  | 134,923 |  |  |  | (22,592 | )
Total Mortgage-Backed Securities |  |  | 9,628 |  |  |  | (13 | ) |  |  | 1,457,646 |  |  |  | (216,540 | ) |  |  | 1,467,274 |  |  |  | (216,553 | )
Total |  | $ | 238,023 |  |  | $ | (4,044 | ) |  | $ | 2,089,545 |  |  | $ | (281,739 | ) |  | $ | 2,327,568 |  |  | $ | (285,783 | )
Schedule of Interest Income from Taxable and Non-taxable Investment Securities | Interest income from taxable and non-taxable investment securities for the three and nine months ended September 30, 2024 and 2023 were as follows:
|  | Three Months Ended September 30, |  |  | Nine Months Ended September 30, |
(dollars in thousands) |  | 2024 |  |  | 2023 |  |  | 2024 |  |  | 2023 |
Taxable |  | $ | 44,068 |  |  | $ | 46,367 |  |  | $ | 130,724 |  |  | $ | 140,718 |
Non-Taxable |  |  | 296 |  |  |  | 23 |  |  |  | 596 |  |  |  | 189 |
Total Interest Income from Investment Securities |  | $ | 44,364 |  |  | $ | 46,390 |  |  | $ | 131,320 |  |  | $ | 140,907 |
Schedule of Carrying Value of Federal Home Loan Bank of Des Moines Stock and Federal Reserve Bank Stock | As of September 30, 2024 and December 31, 2023, the carrying value of the Company’s Federal Home Loan Bank of Des Moines stock and Federal Reserve Bank stock was as follows:
(dollars in thousands) |  | September 30, 2024 |  |  | December 31, 2023 |
Federal Home Loan Bank of Des Moines Stock |  | $ | 34,750 |  |  | $ | 34,750 |
Federal Reserve Bank Stock |  |  | 30,238 |  |  |  | 27,522 |
Total |  | $ | 64,988 |  |  | $ | 62,272 |

X
- Definition Interest income from taxable and non-taxable investment securities. + References No definition available. + Details
Name: | boh_InterestIncomeFromTaxableAndNonTaxableInvestmentSecuritiesTableTextBlock
Namespace Prefix: | boh_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition This item represents the entire disclosure related to reconciling the amortized cost basis and aggregate fair value of the entity's available-for-sale and held-to-maturity investment securities. + References No definition available. + Details
Name: | boh_ScheduleOfAvailableForSaleSecuritiesAndHeldToMaturityTableTextBlock
Namespace Prefix: | boh_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Schedule of Carrying Value of Company's Federal Home Loan Bank and Federal Reserve Bank [Table Text Block] + References No definition available. + Details
Name: | boh_ScheduleofCarryingValueofCompanysFederalHomeLoanBankandFederalReserveBankTableTextBlock
Namespace Prefix: | boh_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position, without allowance for credit loss. Includes beneficial interest in securitized financial asset. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 55 -Paragraph 8 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479081/326-30-55-8 Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-6 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479106/326-30-50-4 + Details
Name: | us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionFairValueTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of realized and unrealized gain (loss) on investment in security. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(9)(a)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(7)(c)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2 + Details
Name: | us-gaap_GainLossOnInvestmentsTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of maturities of an entity's investments as well as any other information pertinent to the investments. + References No definition available. + Details
Name: | us-gaap_InvestmentsClassifiedByContractualMaturityDateTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

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