XML 47 R37.htm IDEA: XBRL DOCUMENT
v3.25.0.1

Basis of Accounting and Consolidation (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Summary of Estimated Useful Lives for Major Depreciable Classification of Premises and Equipment | The estimated useful lives for each major depreciable classification of premises and equipment are as follows:
Buildings and improvements | 20 years to 40 years
Leasehold improvements | 5 years to 15 years
Furniture and equipment | 3 years to 7 years
Schedule of Components of Accumulated Other Comprehensive Loss | The components of accumulated other comprehensive loss included in stockholders’ equity as of December 31, 2024 and 2023 are as follows (in thousands):
|  | Unrealized Gain |
|  | (Loss) on |
|  | Securities |
December 31, 2024 |  |  |
Net unrealized losses on securities available-for-sale |  | $ | (194,144 | )
Tax benefit |  |  | 51,761 |
Balance at December 31, 2024 |  | $ | (142,383 | )
December 31, 2023 |  |  |
Net unrealized losses on securities available-for-sale |  | $ | (192,149 | )
Tax benefit |  |  | 55,722 |
Balance at December 31, 2023 |  | $ | (136,427 | )
Schedule of Amounts Reclassified from Accumulated Other Comprehensive Loss | Amounts reclassified from accumulated other comprehensive loss and the affected line items in the statements of income during the years ended December 31, 2024, 2023, and 2022, were as follows (in thousands):
|  | Amounts Reclassified from Other Comprehensive Income |  |  | Affected Line Item in the
|  | 2024 |  |  | 2023 |  |  | 2022 |  |  | Statements of Income
Realized gains (losses) on available-for-sale securities |  | $ | (433 | ) |  | $ | 3,383 |  |  | $ | 33 |  |  | Securities gains, net (total reclassified amount before tax)
Income tax benefit (expense) |  |  | 119 |  |  |  | (981 | ) |  |  | (10 | ) |  | Tax expense
Total reclassifications out of accumulated other comprehensive income |  | $ | (314 | ) |  | $ | 2,402 |  |  | $ | 23 |  |  | Net reclassified amount

X
- Definition Schedule of amounts reclassified from accumulated other comprehensive income table text block. + References No definition available. + Details
Name: | fmbh_ScheduleOfAmountsReclassifiedFromAccumulatedOtherComprehensiveIncomeTableTextBlock
Namespace Prefix: | fmbh_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Summary of estimated useful lives for major depreciable classification of premises and equipment. + References No definition available. + Details
Name: | fmbh_SummaryOfEstimatedUsefulLivesForMajorDepreciableClassificationOfPremisesAndEquipmentTableTextBlock
Namespace Prefix: | fmbh_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the net gain (loss) and net prior service cost or credit recognized in other comprehensive income (loss) for the period for pension plans and/or other employee benefit plans, and reclassification adjustments of other comprehensive income (loss) for the period, as those amounts, including amortization of the net transition asset or obligation, are recognized as components of net periodic benefit cost. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 + Details
Name: | us-gaap_ScheduleOfAmountsRecognizedInOtherComprehensiveIncomeLossTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration