XML 61 R53.htm IDEA: XBRL DOCUMENT
v3.24.2.u1

Loans and Allowance for Credit Losses - Financial Effect of Loan Modifications (Details) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Weighted Average Interest Rate Reduction | 0.00% | 4.75% | 0.00% | 4.75%
Weighted Average Term Extension (in months) | 7 months | 4 months 28 days | 7 months | 4 months 28 days
Commercial and Industrial Loans |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Weighted Average Interest Rate Reduction | 0.00% | 4.75% | 0.00% | 4.75%
Weighted Average Term Extension (in months) | 7 months | 5 months 3 days | 7 months | 5 months 3 days
Consumer Loans |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Weighted Average Interest Rate Reduction | 0.00% | 0.00% | 0.00% | 0.00%
Weighted Average Term Extension (in months) |  | 3 months |  | 3 months

X
- Definition Financing receivable, loan modifications weighted average interest rate reduction. + References No definition available. + Details
Name: | fmbh_FinancingReceivableLoanModificationsWeightedAverageInterestRateReduction
Namespace Prefix: | fmbh_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Financing receivable, loan modifications weighted average term extension. + References No definition available. + Details
Name: | fmbh_FinancingReceivableLoanModificationsWeightedAverageTermExtension
Namespace Prefix: | fmbh_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 310 -SubTopic 20 -Name Accounting Standards Codification -Section 40 -Paragraph 7 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481628/310-20-40-7 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481990/310-10-45-2 + Details
Name: | us-gaap_AccountsNotesAndLoansReceivableLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=fmbh_CommercialAndIndustrialPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ConsumerPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |