XML 82 R70.htm IDEA: XBRL DOCUMENT
v3.24.3

Other Assets - Additional Information (Detail) - USD ($) $ in Thousands | Sep. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Schedule Of Other Assets [Line Items] |  |
Other assets | $ 352,583 | $ 323,573
Federal Home Loan Bank ("FHLB") and Federal Reserve Bank ("Federal Reserve") |  |
Schedule Of Other Assets [Line Items] |  |
Fair value of equity securities | 133,300 | 133,400
First National Bankers' Bank and Other Miscellaneous Holdings |  |
Schedule Of Other Assets [Line Items] |  |
Fair value of equity securities | $ 93,300 | $ 90,300

X
- Definition Fair Value Of Equity Investment + References No definition available. + Details
Name: | homb_FairValueOfEquityInvestment
Namespace Prefix: | homb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Schedule of other assets. + References No definition available. + Details
Name: | homb_ScheduleOfOtherAssetsLineItems
Namespace Prefix: | homb_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of assets classified as other. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 49 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482785/280-10-55-49 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(10)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 946 -SubTopic 830 -Name Accounting Standards Codification -Section 55 -Paragraph 12 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479168/946-830-55-12 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(10)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(17)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
Name: | us-gaap_OtherAssets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | srt_FederalHomeLoanBankAdvancesBranchOfFHLBBankAxis=homb_FederalHomeLoanBankAndFederalReserveBankMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_FederalHomeLoanBankAdvancesBranchOfFHLBBankAxis=homb_BankersBankAndOtherMiscellaneousHoldingsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |