XML 79 R69.htm IDEA: XBRL DOCUMENT
v3.23.3

Fair Value of Assets and Liabilities - Summary of Estimated Fair Values of Company Financial Instruments (Details) - USD ($) | Sep. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Financial assets |  |
Total available-for-sale securities | $ 1,218,595,000 | $ 1,218,985,000
Held-to-maturity securities | 2,259,000 | 2,954,000
Equity securities, at fair value | 3,932,000 | 311,000
Fair Value, Inputs, Level 1 [Member] |  |
Financial assets |  |
Cash and due from banks | 374,783,000 | 144,806,000
Federal funds sold | 8,454,000 | 7,627,000
Certificates of deposit investments | 0 | 0
Total available-for-sale securities | 0 | 0
Held-to-maturity securities | 2,259,000 | 2,953,000
Equity securities, at fair value | 3,932,000 | 311,000
Loans held for sale | 0 | 0
Loans net of allowance for credit losses | 0 | 0
Interest receivable | 0 | 0
Federal Reserve Bank stock | 0 | 0
Federal Home Loan Bank stock | 0 | 0
Financial liabilities |  |
Deposits | 0 | 0
Federal funds purchased |  | 0
Other borrowings |  | 0
Securities sold under agreements to repurchase | 0 | 0
Interest payable | 0 | 0
Federal Home Loan Bank borrowings | 0 | 0
Fair Value, Inputs, Level 1 [Member] | Subordinated Debt |  |
Financial liabilities |  |
Subordinated debt, net | 0 | 0
Fair Value, Inputs, Level 1 [Member] | Junior Subordinated Debentures |  |
Financial liabilities |  |
Subordinated debt, net | 0 | 0
Fair Value, Inputs, Level 2 [Member] |  |
Financial assets |  |
Cash and due from banks | 0 | 0
Federal funds sold | 0 | 0
Certificates of deposit investments | 1,960,000 | 1,470,000
Total available-for-sale securities | 1,212,835,000 | 1,209,736,000
Held-to-maturity securities | 0 | 0
Equity securities, at fair value | 0 | 0
Loans held for sale | 6,233,000 | 338,000
Loans net of allowance for credit losses | 0 | 0
Interest receivable | 36,476,000 | 28,357,000
Federal Reserve Bank stock | 17,050,000 | 17,050,000
Federal Home Loan Bank stock | 12,648,000 | 18,440,000
Financial liabilities |  |
Deposits | 5,225,518,000 | 4,550,222,000
Federal funds purchased |  | 0
Other borrowings |  | 0
Securities sold under agreements to repurchase | 214,984,000 | 221,260,000
Interest payable | 6,727,000 | 3,346,000
Federal Home Loan Bank borrowings | 358,031,000 | 459,327,000
Fair Value, Inputs, Level 2 [Member] | Subordinated Debt |  |
Financial liabilities |  |
Subordinated debt, net | 99,498,000 | 87,977,000
Fair Value, Inputs, Level 2 [Member] | Junior Subordinated Debentures |  |
Financial liabilities |  |
Subordinated debt, net | 21,605,000 | 17,164,000
Level 3 |  |
Financial assets |  |
Cash and due from banks | 0 | 0
Federal funds sold | 0 | 0
Certificates of deposit investments | 0 | 0
Total available-for-sale securities | 5,760,000 | 9,250,000
Held-to-maturity securities | 0 | 0
Equity securities, at fair value | 0 | 0
Loans held for sale | 0 | 0
Loans net of allowance for credit losses | 5,141,708,000 | 4,460,661,000
Interest receivable | 0 | 0
Federal Reserve Bank stock | 0 | 0
Federal Home Loan Bank stock | 0 | 0
Financial liabilities |  |
Deposits | 1,028,394,000 | 707,526,000
Federal funds purchased |  | 0
Other borrowings |  | 0
Securities sold under agreements to repurchase | 0 | 0
Interest payable | 0 | 0
Federal Home Loan Bank borrowings | 0 | 0
Level 3 | Subordinated Debt |  |
Financial liabilities |  |
Subordinated debt, net | 0 |
Level 3 | Junior Subordinated Debentures |  |
Financial liabilities |  |
Subordinated debt, net | 0 | 0
Carrying Amount |  |
Financial assets |  |
Cash and due from banks | 374,783,000 | 144,806,000
Federal funds sold | 8,454,000 | 7,627,000
Certificates of deposit investments | 1,960,000 | 1,470,000
Total available-for-sale securities | 1,218,595,000 | 1,218,986,000
Held-to-maturity securities | 2,259,000 | 2,953,000
Equity securities, at fair value | 3,932,000 | 311,000
Loans held for sale | 6,233,000 | 338,000
Loans net of allowance for credit losses | 5,465,591,000 | 4,766,780,000
Interest receivable | 36,476,000 | 28,357,000
Federal Reserve Bank stock | 17,050,000 | 17,050,000
Federal Home Loan Bank stock | 12,648,000 | 18,440,000
Financial liabilities |  |
Deposits | 6,346,324,000 | 5,257,001,000
Federal funds purchased |  | 0
Other borrowings |  | 0
Securities sold under agreements to repurchase | 214,978,000 | 221,414,000
Interest payable | 6,727,000 | 3,346,000
Federal Home Loan Bank borrowings | 364,953,000 | 465,071,000
Carrying Amount | Subordinated Debt |  |
Financial liabilities |  |
Subordinated debt, net | 106,648,000 | 94,553,000
Carrying Amount | Junior Subordinated Debentures |  |
Financial liabilities |  |
Subordinated debt, net | 24,003,000 | 19,364,000
Fair Value |  |
Financial assets |  |
Cash and due from banks | 374,783,000 | 144,806,000
Federal funds sold | 8,454,000 | 7,627,000
Certificates of deposit investments | 1,960,000 | 1,470,000
Total available-for-sale securities | 1,218,595,000 | 1,218,986,000
Held-to-maturity securities | 2,259,000 | 2,953,000
Equity securities, at fair value | 3,932,000 | 311,000
Loans held for sale | 6,233,000 | 338,000
Loans net of allowance for credit losses | 5,141,708,000 | 4,460,661,000
Interest receivable | 36,476,000 | 28,357,000
Federal Reserve Bank stock | 17,050,000 | 17,050,000
Federal Home Loan Bank stock | 12,648,000 | 18,440,000
Financial liabilities |  |
Deposits | 6,253,912,000 | 5,257,748,000
Federal funds purchased |  | 0
Other borrowings |  | 0
Securities sold under agreements to repurchase | 214,984,000 | 221,260,000
Interest payable | 6,727,000 | 3,346,000
Federal Home Loan Bank borrowings | 358,031,000 | 459,327,000
Fair Value | Subordinated Debt |  |
Financial liabilities |  |
Subordinated debt, net | 99,498,000 | 87,977,000
Fair Value | Junior Subordinated Debentures |  |
Financial liabilities |  |
Subordinated debt, net | $ 21,605,000 | $ 17,164,000

X
- Definition This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Company may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. + References No definition available. + Details
Name: | fmbh_CashAndDueFromBanksFairValueDisclosure
Namespace Prefix: | fmbh_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Certificates of deposit investments fair value disclosure. + References No definition available. + Details
Name: | fmbh_CertificatesOfDepositInvestmentsFairValueDisclosure
Namespace Prefix: | fmbh_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This element represents the fair value of interest payable. + References No definition available. + Details
Name: | fmbh_InterestPayableFairValueDisclosure
Namespace Prefix: | fmbh_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents the interest receivable from third parties. + References No definition available. + Details
Name: | fmbh_InterestReceivableFairValueDisclosure
Namespace Prefix: | fmbh_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents the amount shown on an entity's books for investments in Federal Reserve Bank stock. + References No definition available. + Details
Name: | fmbh_InvestmentInFederalReserveBankStockFairValueDisclosure
Namespace Prefix: | fmbh_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Other borrowings fair value disclosure. + References No definition available. + Details
Name: | fmbh_OtherBorrowingsFairValueDisclosure
Namespace Prefix: | fmbh_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (aa) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-2 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481830/320-10-45-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(6)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479130/326-30-45-1 + Details
Name: | us-gaap_AvailableForSaleSecuritiesDebtSecurities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 69B -Publisher FASB -URI https://asc.fasb.org//1943274/2147481568/470-20-55-69B Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 69C -Publisher FASB -URI https://asc.fasb.org//1943274/2147481568/470-20-55-69C Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1D -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481139/470-20-50-1D Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482907/825-10-50-10 + Details
Name: | us-gaap_DebtInstrumentFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Fair value portion of deposit liabilities held by the entity, including, but not limited to, foreign and domestic, interest and noninterest bearing, demand deposits, saving deposits, negotiable orders of withdrawal (NOW) and time deposits. + References No definition available. + Details
Name: | us-gaap_DepositsFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI), classified as current. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(2)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483467/210-10-45-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 1A -Publisher FASB -URI https://asc.fasb.org//1943274/2147482736/825-10-45-1A + Details
Name: | us-gaap_EquitySecuritiesFvNi
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount after offset of short term borrowing where a bank borrows, at the federal funds rate, from another bank and securities that an entity sells and agrees to repurchase at a specified date for a specified price. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.13(1)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1 + Details
Name: | us-gaap_FederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchase
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Fair value portion of federal funds sold and securities borrowed or purchased under agreements to resell. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.13(3)(a)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1 + Details
Name: | us-gaap_FederalFundsSoldAndSecuritiesBorrowedOrPurchasedUnderAgreementsToResellFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value portion of borrowing from Federal Home Loan Bank (FHLBank). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.13(3)(a)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1 + Details
Name: | us-gaap_FederalHomeLoanBankBorrowingsFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

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

X
- Definition Fair value of investment in debt security measured at amortized cost (held-to-maturity). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(1)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479440/944-210-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 5A -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-5A Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(6)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1 Reference 4: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (aa) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481800/320-10-50-5 + Details
Name: | us-gaap_HeldToMaturitySecuritiesFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value portion of investments in Federal Home Loan Bank (FHLBank) stock. + References No definition available. + Details
Name: | us-gaap_InvestmentInFederalHomeLoanBankStockFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value portion of loans held-for-sale including, but not limited to, mortgage loans and finance receivables. + References No definition available. + Details
Name: | us-gaap_LoansHeldForSaleFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value portion of loan receivable, including, but not limited to, mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Publisher FASB -URI https://asc.fasb.org//310-10/tableOfContent + Details
Name: | us-gaap_LoansReceivableFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Fair value portion of securities that an entity sells and agrees to repurchase at a specified date for a specified price. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 10 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482907/825-10-50-10 + Details
Name: | us-gaap_SecuritiesLoanedOrSoldUnderAgreementsToRepurchaseFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_SubordinatedDebtMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LongtermDebtTypeAxis=us-gaap_JuniorSubordinatedDebtMember
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: |

X
- Details
Name: | us-gaap_FairValueByMeasurementBasisAxis=us-gaap_CarryingReportedAmountFairValueDisclosureMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FairValueByMeasurementBasisAxis=us-gaap_EstimateOfFairValueFairValueDisclosureMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |