Subsequent Events	9 Months Ended
Sep. 30, 2025
Subsequent Events [Abstract]
Subsequent Events	Note 12 -- Subsequent Events On October 29, 2025, the Company and Star Sub LLC, a newly formed Iowa limited liability company and wholly-owned subsidiary of the Company, entered into an Agreement and Plan of Merger (the "Merger Agreement") with Two Rivers Financial Group, Inc. an Iowa corporation (Two Rivers), pursuant to which, among other things, the Company agreed to acquire 100% of the issued and outstanding shares of Two Rivers pursuant to a business combination whereby Two Rivers will merge with and into Star Sub LLC, whereupon the separate corporate existence of Two Rivers will cease and Star Sub LLC will continue as a surviving company and a wholly-owned subsidiary of the Company (the "Merger"). Subject to the terms and conditions of the Merger Agreement, at the effective time of the Merger, each share of common stock of Two Rivers issued and outstanding immediately prior to the effective time of the Merger (other than shares held in treasury by Two Rivers) will be converted into and become the right to receive 1.225 shares of common stock of the Company, and cash in lieu of fractional shares, less any applicable taxes required to be withheld, and subject to certain potential adjustments. On an aggregate basis, the total consideration payable by the Company at the closing of the Merger to Two Rivers' shareholders and equity award holders is approximately 2,556,140 shares of First Mid common stock. The Merger is anticipated to be completed in the first half of 2026 and is subject to the approval of the appropriate regulatory authorities and the shareholders of Two Rivers.

Subsequent Events

9 Months Ended

Sep. 30, 2025

Note 12 -- Subsequent Events

On October 29, 2025, the Company and Star Sub LLC, a newly formed Iowa limited liability company and wholly-owned subsidiary of the Company, entered into an Agreement and Plan of Merger (the "Merger Agreement") with Two Rivers Financial Group, Inc. an Iowa corporation (Two Rivers), pursuant to which, among other things, the Company agreed to acquire 100% of the issued and outstanding shares of Two Rivers pursuant to a business combination whereby Two Rivers will merge with and into Star Sub LLC, whereupon the separate corporate existence of Two Rivers will cease and Star Sub LLC will continue as a surviving company and a wholly-owned subsidiary of the Company (the "Merger").

Subject to the terms and conditions of the Merger Agreement, at the effective time of the Merger, each share of common stock of Two Rivers issued and outstanding immediately prior to the effective time of the Merger (other than shares held in treasury by Two Rivers) will be converted into and become the right to receive 1.225 shares of common stock of the Company, and cash in lieu of fractional shares, less any applicable taxes required to be withheld, and subject to certain potential adjustments. On an aggregate basis, the total consideration payable by the Company at the closing of the Merger to Two Rivers' shareholders and equity award holders is approximately 2,556,140 shares of First Mid common stock. The Merger is anticipated to be completed in the first half of 2026 and is subject to the approval of the appropriate regulatory authorities and the shareholders of Two Rivers.