XML 90 R74.htm IDEA: XBRL DOCUMENT
v3.22.4

Loans and Allowance for Credit Losses - Summary of Troubled Debt Restructurings by Modification (Details) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 USD ($) loan | Dec. 31, 2021 USD ($) loan
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Pre- Modification Recorded Balance | $ 114 | $ 14,028
Post - Modification Recorded Balance | $ 118 | $ 14,083
Number of Loans | loan | 2 | 15
Term Modification |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Post - Modification Recorded Balance | $ 62 | $ 13,802
Rate Modification |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Post - Modification Recorded Balance | 56 | 142
Combination |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Post - Modification Recorded Balance |  | 139
Commercial and industrial loans |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Pre- Modification Recorded Balance | 61 | 348
Post - Modification Recorded Balance | $ 62 | $ 348
Number of Loans | loan | 1 | 2
Commercial and industrial loans | Term Modification |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Post - Modification Recorded Balance | $ 62 | $ 348
Commercial and industrial loans | Rate Modification |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Post - Modification Recorded Balance | 0 | 0
Commercial and industrial loans | Combination |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Post - Modification Recorded Balance |  | 0
Construction |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Pre- Modification Recorded Balance |  | 16
Post - Modification Recorded Balance |  | $ 16
Number of Loans | loan |  | 1
Construction | Term Modification |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Post - Modification Recorded Balance |  | $ 0
Construction | Rate Modification |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Post - Modification Recorded Balance |  | 16
Construction | Combination |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Post - Modification Recorded Balance |  | 0
Commercial real estate, non-owner occupied |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Pre- Modification Recorded Balance |  | 12,922
Post - Modification Recorded Balance |  | $ 12,976
Number of Loans | loan |  | 1
Commercial real estate, non-owner occupied | Term Modification |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Post - Modification Recorded Balance |  | $ 12,976
Commercial real estate, non-owner occupied | Rate Modification |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Post - Modification Recorded Balance |  |
Commercial real estate, non-owner occupied | Combination |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Post - Modification Recorded Balance |  |
Commercial real estate, owner occupied |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Pre- Modification Recorded Balance |  | 51
Post - Modification Recorded Balance |  | $ 50
Number of Loans | loan |  | 2
Commercial real estate, owner occupied | Term Modification |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Post - Modification Recorded Balance |  | $ 29
Commercial real estate, owner occupied | Rate Modification |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Post - Modification Recorded Balance |  | 0
Commercial real estate, owner occupied | Combination |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Post - Modification Recorded Balance |  | 21
Residential |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Pre- Modification Recorded Balance | 53 | 691
Post - Modification Recorded Balance | $ 56 | $ 693
Number of Loans | loan | 1 | 9
Residential | Term Modification |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Post - Modification Recorded Balance | $ 0 | $ 449
Residential | Rate Modification |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Post - Modification Recorded Balance | $ 56 | 126
Residential | Combination |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Post - Modification Recorded Balance |  | $ 118

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_FinancingReceivableModificationsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of financing receivables that have been modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953676-111524 + Details
Name: | us-gaap_FinancingReceivableModificationsNumberOfContracts2
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount, after troubled debt restructuring, of modified financing receivable. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953676-111524 + Details
Name: | us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount, before troubled debt restructuring, of financing receivable to be modified. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953676-111524 + Details
Name: | us-gaap_FinancingReceivableModificationsPreModificationRecordedInvestment2
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_LoanRestructuringModificationAxis=us-gaap_ExtendedMaturityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LoanRestructuringModificationAxis=us-gaap_ContractualInterestRateReductionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LoanRestructuringModificationAxis=frme_TroubledDebtRestructuringsRateAndTermModificationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=frme_CommercialAndIndustrialLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_ConstructionLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=frme_CommercialRealEstateNonOwnerOccupiedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=frme_CommercialRealEstateOwnerOccupiedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_ResidentialRealEstateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |