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Regulatory Capital (Tables) | 9 Months Ended
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Sep. 30, 2025
Regulatory Capital [Abstract] |
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations | Management believes that, as of September 30, 2025 and December 31, 2024, the Company and First Mid Bank, as applicable, met all capital adequacy requirements. To be categorized as well-capitalized, total risk-based capital, Tier 1 risk-based capital, common equity Tier 1 risk-based capital and Tier 1 leverage ratios must be maintained as set forth in the following table (dollars in thousands):
|  | Actual |  |  | Required Minimum For Capital Adequacy Purposes |  | To Be Well-Capitalized Under Prompt Corrective Action Provisions
|  | Amount |  |  | Ratio |  |  | Amount |  |  | Ratio |  | Amount |  |  | Ratio
September 30, 2025 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total capital (to risk-weighted assets) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company |  | $ | 988,094 |  |  |  | 15.99 | % |  | $ | 648,977 |  |  | > 10.50% |  | N/A |  |  | N/A
First Mid Bank |  |  | 905,926 |  |  |  | 14.72 | % |  |  | 646,397 |  |  | > 10.50% |  | $ | 615,616 |  |  | > 10.00%
Tier 1 capital (to risk-weighted assets) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company |  |  | 836,042 |  |  |  | 13.53 | % |  |  | 525,362 |  |  | > 8.50% |  | N/A |  |  | N/A
First Mid Bank |  |  | 833,519 |  |  |  | 13.54 | % |  |  | 523,273 |  |  | > 8.50% |  |  | 492,493 |  |  | > 8.00%
Common equity tier 1 capital (to risk-weighted assets) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company |  |  | 811,623 |  |  |  | 13.13 | % |  |  | 432,651 |  |  | > 7.00% |  | N/A |  |  | N/A
First Mid Bank |  |  | 833,519 |  |  |  | 13.54 | % |  |  | 430,931 |  |  | > 7.00% |  |  | 400,150 |  |  | > 6.50%
Tier 1 capital (to average assets) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company |  |  | 836,042 |  |  |  | 10.92 | % |  |  | 306,377 |  |  | > 4.00% |  | N/A |  |  | N/A
First Mid Bank |  |  | 833,519 |  |  |  | 10.94 | % |  |  | 304,845 |  |  | > 4.00% |  |  | 381,056 |  |  | > 5.00%
December 31, 2024 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total capital (to risk-weighted assets) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company |  | $ | 935,189 |  |  |  | 15.37 | % |  | $ | 639,015 |  |  | >10.50% |  | N/A |  |  | N/A
First Mid Bank |  |  | 880,621 |  |  |  | 14.51 | % |  |  | 637,089 |  |  | >10.50% |  | $ | 606,752 |  |  | > 10.00%
Tier 1 capital (to risk-weighted assets) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company |  |  | 780,096 |  |  |  | 12.82 | % |  |  | 517,298 |  |  | > 8.50% |  | N/A |  |  | N/A
First Mid Bank |  |  | 813,000 |  |  |  | 13.40 | % |  |  | 515,739 |  |  | > 8.50% |  |  | 485,401 |  |  | > 8.00%
Common equity tier 1 capital (to risk-weighted assets) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company |  |  | 755,816 |  |  |  | 12.42 | % |  |  | 426,010 |  |  | > 7.00% |  | N/A |  |  | N/A
First Mid Bank |  |  | 813,000 |  |  |  | 13.40 | % |  |  | 424,726 |  |  | > 7.00% |  |  | 394,389 |  |  | > 6.50%
Tier 1 capital (to average assets) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Company |  |  | 780,096 |  |  |  | 10.33 | % |  |  | 301,976 |  |  | > 4.00% |  | N/A |  |  | N/A
First Mid Bank |  |  | 813,000 |  |  |  | 10.82 | % |  |  | 300,596 |  |  | > 4.00% |  |  | 375,745 |  |  | > 5.00%

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- Definition Regulatory capital. + References No definition available. + Details
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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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