XML 71 R61.htm IDEA: XBRL DOCUMENT
v3.23.1

Repurchase Agreements and Other Borrowings - Federal Home Loan Bank, Advances (Details) - USD ($) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2023 | Dec. 31, 2022
Federal Home Loan Bank Advances Branch Of F H L B Bank [Line Items] |  |
Federal Home Loan Bank Advances | $ 594,700,000 | $ 464,700,000
Interest Rate 4.86% - Maturity Date April 1, 2023 |  |
Federal Home Loan Bank Advances Branch Of F H L B Bank [Line Items] |  |
Federal Home Loan Bank Advances | $ 110,000,000 |
Federal Home Loan Bank, Advances, Interest Rate | 4.86% |
Federal Home Loan Bank, Advances, Maturity Date | Apr. 01, 2023 |
Interest Rate 2.44% - Maturity Date May 30, 2023 |  |
Federal Home Loan Bank Advances Branch Of F H L B Bank [Line Items] |  |
Federal Home Loan Bank Advances | $ 5,000,000 |
Federal Home Loan Bank Advances, Term (in years) | 4 years |
Federal Home Loan Bank, Advances, Interest Rate | 2.44% |
Federal Home Loan Bank, Advances, Maturity Date | May 30, 2023 |
Interest Rate 2.00% - Maturity Date May 31, 2023 |  |
Federal Home Loan Bank Advances Branch Of F H L B Bank [Line Items] |  |
Federal Home Loan Bank Advances | $ 5,000,000 |
Federal Home Loan Bank Advances, Term (in years) | 1 year |
Federal Home Loan Bank, Advances, Interest Rate | 2.00% |
Federal Home Loan Bank, Advances, Maturity Date | May 31, 2023 |
Interest Rate 4.34% - Maturity Date June 30, 2023 |  |
Federal Home Loan Bank Advances Branch Of F H L B Bank [Line Items] |  |
Federal Home Loan Bank Advances | $ 25,000,000 |
Federal Home Loan Bank Advances, Term (in years) | 9 months |
Federal Home Loan Bank, Advances, Interest Rate | 4.34% |
Federal Home Loan Bank, Advances, Maturity Date | Jun. 30, 2023 |
Interest Rate 1.51% - Maturity Date July 31, 2023 |  |
Federal Home Loan Bank Advances Branch Of F H L B Bank [Line Items] |  |
Federal Home Loan Bank Advances | $ 5,000,000 |
Federal Home Loan Bank Advances, Term (in years) | 3 years 6 months |
Federal Home Loan Bank, Advances, Interest Rate | 1.51% |
Federal Home Loan Bank, Advances, Maturity Date | Jul. 31, 2023 |
Interest Rate 0.77% - Maturity Date September 11, 2023 |  |
Federal Home Loan Bank Advances Branch Of F H L B Bank [Line Items] |  |
Federal Home Loan Bank Advances | $ 5,000,000 |
Federal Home Loan Bank Advances, Term (in years) | 3 years 6 months |
Federal Home Loan Bank, Advances, Interest Rate | 0.77% |
Federal Home Loan Bank, Advances, Maturity Date | Sep. 11, 2023 |
Interest Rate 4.81% - Maturity Date November 10, 2023 |  |
Federal Home Loan Bank Advances Branch Of F H L B Bank [Line Items] |  |
Federal Home Loan Bank Advances | $ 25,000,000 |
Federal Home Loan Bank Advances, Term (in years) | 1 year |
Federal Home Loan Bank, Advances, Interest Rate | 4.81% |
Federal Home Loan Bank, Advances, Maturity Date | Nov. 10, 2023 |
Interest Rate 4.69% - Maturity Date May 10, 2024 |  |
Federal Home Loan Bank Advances Branch Of F H L B Bank [Line Items] |  |
Federal Home Loan Bank Advances | $ 25,000,000 |
Federal Home Loan Bank Advances, Term (in years) | 1 year 6 months |
Federal Home Loan Bank, Advances, Interest Rate | 4.69% |
Federal Home Loan Bank, Advances, Maturity Date | May 10, 2024 |
Interest Rate 4.59% - Maturity Date November 8, 2024 |  |
Federal Home Loan Bank Advances Branch Of F H L B Bank [Line Items] |  |
Federal Home Loan Bank Advances | $ 25,000,000 |
Federal Home Loan Bank Advances, Term (in years) | 2 years |
Federal Home Loan Bank, Advances, Interest Rate | 4.59% |
Federal Home Loan Bank, Advances, Maturity Date | Nov. 08, 2024 |
Interest Rate 1.45% - Maturity Date December 31, 2024 |  |
Federal Home Loan Bank Advances Branch Of F H L B Bank [Line Items] |  |
Federal Home Loan Bank Advances | $ 10,000,000 |
Federal Home Loan Bank Advances, Term (in years) | 5 years |
Federal Home Loan Bank, Advances, Interest Rate | 1.45% |
Federal Home Loan Bank, Advances, Maturity Date | Dec. 31, 2024 |
Interest Rate 0.91% - Maturity Date March 10, 2025 |  |
Federal Home Loan Bank Advances Branch Of F H L B Bank [Line Items] |  |
Federal Home Loan Bank Advances | $ 5,000,000 |
Federal Home Loan Bank Advances, Term (in years) | 5 years |
Federal Home Loan Bank, Advances, Interest Rate | 0.91% |
Federal Home Loan Bank, Advances, Maturity Date | Mar. 10, 2025 |
Interest Rate 2.64% - Maturity Date December 23, 2025 |  |
Federal Home Loan Bank Advances Branch Of F H L B Bank [Line Items] |  |
Federal Home Loan Bank Advances | $ 4,746,475 |
Federal Home Loan Bank Advances, Term (in years) | 10 years |
Federal Home Loan Bank, Advances, Interest Rate | 2.64% |
Federal Home Loan Bank, Advances, Maturity Date | Dec. 23, 2025 |
Interest Rate 2.98% - Maturity Date December 8, 2027 |  |
Federal Home Loan Bank Advances Branch Of F H L B Bank [Line Items] |  |
Federal Home Loan Bank Advances | $ 50,000,000 |
Federal Home Loan Bank Advances, Term (in years) | 4 years |
Federal Home Loan Bank, Advances, Interest Rate | 2.98% |
Federal Home Loan Bank, Advances, Maturity Date | Dec. 08, 2027 |
Interest Rate 3.49% - Maturity Date December 8, 2027 |  |
Federal Home Loan Bank Advances Branch Of F H L B Bank [Line Items] |  |
Federal Home Loan Bank Advances | $ 50,000,000 |
Federal Home Loan Bank Advances, Term (in years) | 4 years |
Federal Home Loan Bank, Advances, Interest Rate | 3.49% |
Federal Home Loan Bank, Advances, Maturity Date | Dec. 08, 2027 |
Interest Rate 3.28% - Maturity Date December 8, 2027 |  |
Federal Home Loan Bank Advances Branch Of F H L B Bank [Line Items] |  |
Federal Home Loan Bank Advances | $ 50,000,000 |
Federal Home Loan Bank Advances, Term (in years) | 4 years |
Federal Home Loan Bank, Advances, Interest Rate | 3.28% |
Federal Home Loan Bank, Advances, Maturity Date | Dec. 08, 2027 |
Interest Rate 3.56% - Maturity Date March 10, 2028 |  |
Federal Home Loan Bank Advances Branch Of F H L B Bank [Line Items] |  |
Federal Home Loan Bank Advances | $ 25,000,000 |
Federal Home Loan Bank Advances, Term (in years) | 5 years |
Federal Home Loan Bank, Advances, Interest Rate | 3.56% |
Federal Home Loan Bank, Advances, Maturity Date | Mar. 10, 2028 |
Interest Rate 3.35% - Maturity Date March 13, 2028 |  |
Federal Home Loan Bank Advances Branch Of F H L B Bank [Line Items] |  |
Federal Home Loan Bank Advances | $ 25,000,000 |
Federal Home Loan Bank Advances, Term (in years) | 5 years |
Federal Home Loan Bank, Advances, Interest Rate | 3.35% |
Federal Home Loan Bank, Advances, Maturity Date | Mar. 13, 2028 |
Interest Rate 3.47% - Maturity Date March 13, 2028 |  |
Federal Home Loan Bank Advances Branch Of F H L B Bank [Line Items] |  |
Federal Home Loan Bank Advances | $ 25,000,000 |
Federal Home Loan Bank Advances, Term (in years) | 5 years |
Federal Home Loan Bank, Advances, Interest Rate | 3.47% |
Federal Home Loan Bank, Advances, Maturity Date | Mar. 13, 2028 |
Interest Rate 1.15% - Maturity Date October 3, 2029 |  |
Federal Home Loan Bank Advances Branch Of F H L B Bank [Line Items] |  |
Federal Home Loan Bank Advances | $ 5,000,000 |
Federal Home Loan Bank Advances, Term (in years) | 10 years |
Federal Home Loan Bank, Advances, Interest Rate | 1.15% |
Federal Home Loan Bank, Advances, Maturity Date | Oct. 03, 2029 |
Interest Rate 1.12% - Maturity Date October 3, 2029 |  |
Federal Home Loan Bank Advances Branch Of F H L B Bank [Line Items] |  |
Federal Home Loan Bank Advances | $ 5,000,000 |
Federal Home Loan Bank Advances, Term (in years) | 10 years |
Federal Home Loan Bank, Advances, Interest Rate | 1.12% |
Federal Home Loan Bank, Advances, Maturity Date | Oct. 03, 2029 |
Interest Rate 1.39% - Maturity Date December 31, 2029 |  |
Federal Home Loan Bank Advances Branch Of F H L B Bank [Line Items] |  |
Federal Home Loan Bank Advances | $ 10,000,000 |
Federal Home Loan Bank Advances, Term (in years) | 10 years |
Federal Home Loan Bank, Advances, Interest Rate | 1.39% |
Federal Home Loan Bank, Advances, Maturity Date | Dec. 31, 2029 |
Interest Rate 2.77% - Maturity Date December 13, 2032 |  |
Federal Home Loan Bank Advances Branch Of F H L B Bank [Line Items] |  |
Federal Home Loan Bank Advances | $ 50,000,000 |
Federal Home Loan Bank Advances, Term (in years) | 10 years |
Federal Home Loan Bank, Advances, Interest Rate | 2.77% |
Federal Home Loan Bank, Advances, Maturity Date | Dec. 13, 2032 |
Interest Rate 2.60% - Maturity Date March 14, 2033 |  |
Federal Home Loan Bank Advances Branch Of F H L B Bank [Line Items] |  |
Federal Home Loan Bank Advances | $ 25,000,000 |
Federal Home Loan Bank Advances, Term (in years) | 10 years |
Federal Home Loan Bank, Advances, Interest Rate | 2.60% |
Federal Home Loan Bank, Advances, Maturity Date | Mar. 14, 2033 |
Interest Rate 2.40% - Maturity Date March 15, 2033 |  |
Federal Home Loan Bank Advances Branch Of F H L B Bank [Line Items] |  |
Federal Home Loan Bank Advances | $ 25,000,000 |
Federal Home Loan Bank Advances, Term (in years) | 10 years |
Federal Home Loan Bank, Advances, Interest Rate | 2.40% |
Federal Home Loan Bank, Advances, Maturity Date | Mar. 15, 2033 |

X
- Definition Federal Home Loan Bank, advances, maturity date. + References No definition available. + Details
Name: | fmbh_FederalHomeLoanBankAdvancesMaturityDate
Namespace Prefix: | fmbh_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

X
- Definition Federal Home Loan Bank Advances, Original Term + References No definition available. + Details
Name: | fmbh_FederalHomeLoanBankAdvancesOriginalMaturityTerm
Namespace Prefix: | fmbh_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Short-term and long-term Federal Home Loan Bank borrowings. + References No definition available. + Details
Name: | fmbh_FederalHomeLoanBankAdvancesShortAndLongTerm
Namespace Prefix: | fmbh_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Discloses the single interest rate [if] applicable to the advances from the Federal Home Loan Bank, by branch, as of the Balance Sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 50 -Paragraph 3 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=123599511&loc=d3e64711-112823 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=6479118&loc=d3e64650-112822 + Details
Name: | us-gaap_FederalHomeLoanBankAdvancesBranchOfFHLBBankInterestRate
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
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_FederalHomeLoanBankAdvancesBranchOfFHLBBankLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_DebtInstrumentAxis=fmbh_InterestRateFourPointEightSixMaturingOnAprilOneTwoThousandTwentyThreeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=fmbh_InterestRateTwoPointFourFourMaturingOnMayThirtyTwoThousandTwentyThreeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=fmbh_InterestRateTwoPointZeroZeroMaturingOnMayThirtyOneTwoThousandTwentyThreeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=fmbh_InterestRateFourPointThreeFourMaturingOnJuneThirtyTwoThousandTwentyThreeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=fmbh_InterestRateOnePointFiveOneMaturingOnJulyThirtyOneTwoThousandTwentyThreeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=fmbh_InterestRateZeroPointSevenSevenMaturingOnSeptemberElevenTwoThousandTwentyThreeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=fmbh_InterestRateFourPointEightOneMaturingOnNovemberTenTwoThousandTwentyThreeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=fmbh_InterestRateFourPointSixNineMaturingOnMayTenTwoThousandTwentyFourMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=fmbh_InterestRateFourPointFiveNineMaturingOnNovemberEightTwoThousandTwentyFourMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=fmbh_InterestRateOnePointFourFiveMaturingOnDecemberThirtyOneTwoThousandTwentyFourMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=fmbh_InterestRateZeroPointNineOneMaturingOnMarchTenTwoThousandTwentyFiveMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=fmbh_InterestRateTwoPointSixFourMaturingOnDecemberTwentyThreeTwoThousandTwentyFiveMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=fmbh_InterestRateTwoPointNineEightMaturingOnDecemberEightTwoThousandTwentySevenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=fmbh_InterestRateThreePointFourNineMaturingOnDecemberEightTwoThousandTwentySevenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=fmbh_InterestRateThreePointTwoEightMaturingOnDecemberEightTwoThousandTwentySevenMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=fmbh_InterestRateThreePointFiveSixMaturingOnMarchTenTwoThousandTwentyEightMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=fmbh_InterestRateThreePointThreeFiveMaturingOnMarchThirteenTwoThousandTwentyEightMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=fmbh_InterestRateThreePointFourSevenMaturingOnMarchThirteenTwoThousandTwentyEightMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=fmbh_InterestRateOnePointOneFiveMaturingOnOctoberThreeTwoThousandTwentyNineMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=fmbh_InterestRateOnePointOneTwoMaturingOnOctoberThreeTwoThousandTwentyNineMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=fmbh_InterestRateOnePointThreeNineMaturingOnDecemberThirtyOneTwoThousandTwentyNineMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=fmbh_InterestRateTwoPointSevenSevenMaturingOnDecemberThirteenTwoThousandThirtyTwoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=fmbh_InterestRateTwoPointSixZeroMaturingOnMarchFourteenTwoThousandThirtyThreeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=fmbh_InterestRateTwoPointFourZeroMaturingOnMarchFifteenTwoThousandThirtyThreeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |