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Employee Benefit Plans (Detail) - USD ($) shares in Millions |  | 12 Months Ended
--- | --- | ---
Apr. 20, 2007 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2011
Chairman's Retirement Plan |  |  |  |  |
Employee Benefit Plans [Line Items] |  |  |  |  |
Employee benefits plan expense |  | $ 84,787 | $ 97,449 | $ 109,140 |
Supplemental retirement benefit | $ 250,000 |  |  |  |
Additional defined benefit obligation, term | 10 years |  |  |  |
Employee benefits plan vested percentage |  |  |  |  | 100.00%
Supplemental retirement benefit plan during year |  | $ 250,000 | 250,000 | 250,000 |
Home BancShares, Inc. 401(k) and Employee Stock Ownership Plan |  |  |  |  |
Employee Benefit Plans [Line Items] |  |  |  |  |
Shares of company common stock held by employee (in shares) |  | 1.3 |  |  |
Discretionary contributions amount |  | $ 0 | 0 | 0 |
Employee benefits plan expense |  | $ 3,400,000 | $ 3,100,000 | $ 2,500,000 |

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- Definition Amount of payment to participant of defined benefit plan which decreases benefit obligation. For pension plan, payment includes, but is not limited to, pension benefits and death benefits. For other postretirement plan, payment includes, but is not limited to, prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 60 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480266/715-60-50-4 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a)(6) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-1 + Details
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