Deferred Compensation Plan	12 Months Ended
Dec. 31, 2023
Deferred Compensation Plan [Abstract]
Deferred Compensation Plan	Note 12 -- Deferred Compensation Plan The Company follows the provisions of ASC 710, for purposes of the First Mid Bancshares, Inc. Amended and Restated Deferred Compensation Plan (“DCP”). At December 31, 2023, the Company classified the cost basis of its common stock issued and held in trust in connection with the DCP of approximately $5.2 million as treasury stock. The Company also classified the cost basis of its related deferred compensation obligation of approximately $5.2 million as an equity instrument (deferred compensation). The DCP was effective as of June 1984. The purpose of the DCP is to enable directors, advisory directors, and key employees the opportunity to defer a portion of the fees and cash compensation paid by the Company as a means of maximizing the effectiveness and flexibility of compensation arrangements. The Company invests all participants’ deferrals in shares of common stock. Dividends paid on the shares are credited to participants’ DCP accounts and invested in additional shares. During 2023 and 2022, the Company issued 0 common shares and 8,378 common shares, respectively, pursuant to the DCP. The Company also maintains deferred compensation arrangements that were acquired in the Soy Capital acquisition. Individual participants in the agreements are primarily business development employees in the First Mid Insurance and First Mid Wealth Management divisions. The total liabilities associated with these agreements are included in other liabilities on the Company's consolidated balance sheets as of December 31, 2023 and 2022.

The entire disclosure for compensation costs, including compensated absences accruals, compensated absences liability, deferred compensation arrangements and income statement compensation items. Deferred compensation arrangements may include a description of an arrangement with an individual employee, which is generally an employment contract between the entity and a selected officer or key employee containing a promise by the employer to pay certain amounts at designated future dates, usually including a period after retirement, upon compliance with stipulated requirements. This type of arrangement is distinguished from broader based employee benefit plans as it is usually tailored to the employee. Disclosure also typically includes the amount of related compensation expense recognized during the reporting period, the number of shares (units) issued during the period under such arrangements, and the carrying amount as of the balance sheet date of the related liability.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 710
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org//710/tableOfContent

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 710
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482969/710-10-50-1

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