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Stockholders' Equity (Tables) | 12 Months Ended
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Dec. 31, 2024
Equity [Abstract] |
Schedule of Actual Capital Amounts and Ratios | The Company’s and the Bank’s actual capital amounts and ratios are presented in the following table.
| Actual |  | Minimum For Capital Adequacy Purposes |  | To Be Well Capitalized Under Prompt Corrective Action Provision
(In thousands) | Amount |  | Ratio (%) |  | Amount |  | Ratio (%) |  | Amount |  | Ratio (%)
December 31, 2024 |  |  |  |  |  |  |  |  |  |  |
Total Risk-Based Capital Ratio |  |  |  |  |  |  |  |  |  |  |
Simmons First National Corporation | $ | 2,992,132 |  |  | 14.6 |  |  | $ | 1,639,524 |  |  | 8.0 |  |  | N/A |  |
Simmons Bank | 2,795,430 |  |  | 13.7 |  |  | 1,632,368 |  |  | 8.0 |  |  | 2,040,460 |  |  | 10.0 |
Tier 1 Risk-Based Capital Ratio |  |  |  |  |  |  |  |  |  |  |
Simmons First National Corporation | 2,535,527 |  |  | 12.4 |  |  | 1,226,868 |  |  | 6.0 |  |  | N/A |  |
Simmons Bank | 2,573,121 |  |  | 12.6 |  |  | 1,225,296 |  |  | 6.0 |  |  | 1,633,728 |  |  | 8.0 |
Common Equity Tier 1 Capital Ratio |  |  |  |  |  |  |  |  |  |  |
Simmons First National Corporation | 2,535,527 |  |  | 12.4 |  |  | 920,151 |  |  | 4.5 |  |  | N/A |  |
Simmons Bank | 2,573,121 |  |  | 12.6 |  |  | 918,972 |  |  | 4.5 |  |  | 1,327,404 |  |  | 6.5 |
Tier 1 Leverage Ratio |  |  |  |  |  |  |  |  |  |  |
Simmons First National Corporation | 2,535,527 |  |  | 9.7 |  |  | 1,045,578 |  |  | 4.0 |  |  | N/A |  |
Simmons Bank | 2,573,121 |  |  | 9.9 |  |  | 1,039,645 |  |  | 4.0 |  |  | 1,299,556 |  |  | 5.0 |
December 31, 2023 |  |  |  |  |  |  |  |  |  |  |
Total Risk-Based Capital Ratio |  |  |  |  |  |  |  |  |  |  |
Simmons First National Corporation | $ | 2,964,917 |  |  | 14.4 |  |  | $ | 1,647,176 |  |  | 8.0 |  |  | N/A |  |
Simmons Bank | 2,834,126 |  |  | 13.8 |  |  | 1,642,972 |  |  | 8.0 |  |  | 2,053,714 |  |  | 10.0 |
Tier 1 Risk-Based Capital Ratio |  |  |  |  |  |  |  |  |  |  |
Simmons First National Corporation | 2,493,799 |  |  | 12.1 |  |  | 1,236,595 |  |  | 6.0 |  |  | N/A |  |
Simmons Bank | 2,663,153 |  |  | 13.0 |  |  | 1,229,148 |  |  | 6.0 |  |  | 1,638,863 |  |  | 8.0 |
Common Equity Tier 1 Capital Ratio |  |  |  |  |  |  |  |  |  |  |
Simmons First National Corporation | 2,493,799 |  |  | 12.1 |  |  | 927,446 |  |  | 4.5 |  |  | N/A |  |
Simmons Bank | 2,663,153 |  |  | 13.0 |  |  | 921,861 |  |  | 4.5 |  |  | 1,331,577 |  |  | 6.5 |
Tier 1 Leverage Ratio |  |  |  |  |  |  |  |  |  |  |
Simmons First National Corporation | 2,493,799 |  |  | 9.4 |  |  | 1,061,191 |  |  | 4.0 |  |  | N/A |  |
Simmons Bank | 2,663,153 |  |  | 10.0 |  |  | 1,065,261 |  |  | 4.0 |  |  | 1,331,577 |  |  | 5.0 |

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- Definition Tabular disclosure of the capital amounts and ratios as of the balance sheet date, indicating whether the entity or entities are in compliance with regulatory capital requirements, by entity. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 505 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477270/942-505-50-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 505 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Publisher FASB -URI https://asc.fasb.org/1943274/2147477270/942-505-50-1B + Details
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