XML 135 R102.htm IDEA: XBRL DOCUMENT v3.22.0.1

Disclosures of Fair Values of Financial Instruments - Assets Measured at Fair Value on a Nonrecurring Basis (Details) - Fair Value, Nonrecurring - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Collateral Dependent Loans
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Assets, Fair Value	$ 6,750	$ 14,876
Foreclosed Assets Held-for-sale
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Assets, Fair Value	2,068	290
Mortgage Servicing Rights
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Assets, Fair Value	420	517
Quoted Prices in Active Markets for Identical Assets (Level 1) | Collateral Dependent Loans
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Assets, Fair Value	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Foreclosed Assets Held-for-sale
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Assets, Fair Value	0	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Mortgage Servicing Rights
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Assets, Fair Value	0	0
Significant Other Observable Inputs (Level 2) | Collateral Dependent Loans
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Assets, Fair Value	0	0
Significant Other Observable Inputs (Level 2) | Foreclosed Assets Held-for-sale
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Assets, Fair Value	0	0
Significant Other Observable Inputs (Level 2) | Mortgage Servicing Rights
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Assets, Fair Value	0	0
Significant Unobservable Inputs (Level 3) | Collateral Dependent Loans
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Assets, Fair Value	6,750	14,876
Significant Unobservable Inputs (Level 3) | Foreclosed Assets Held-for-sale
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Assets, Fair Value	2,068	290
Significant Unobservable Inputs (Level 3) | Mortgage Servicing Rights
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Assets, Fair Value	$ 420	$ 517

X

- Definition

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258

+ Details

Name:	us-gaap_AssetsFairValueDisclosure
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

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

No definition available.

+ Details

Name:	us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_FairValueByMeasurementFrequencyAxis=us-gaap_FairValueMeasurementsNonrecurringMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByAssetClassAxis=fmbh_CollateralDependentLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByAssetClassAxis=us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByAssetClassAxis=fmbh_MortgageServicingRightsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel1Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: