XML 64 R53.htm IDEA: XBRL DOCUMENT
v3.21.1

Loans and Allowance - Allowance for Credit Losses and Loan Portfolio by Loan Segment (Details) $ in Thousands | Dec. 31, 2020 USD ($)
--- | ---
Allowance Balances: |
Individually evaluated for impairment | $ 12,901
Collectively evaluated for impairment | 117,747
Total Allowance for Loan Losses | 130,648
Loan Balances: |
Individually evaluated for impairment | 56,156
Collectively evaluated for impairment | 9,180,857
Financing Receivable, Evaluated for Impairment | 9,243,174
Loans acquired with deteriorated credit quality |
Loan Balances: |
Financing Receivable, Evaluated for Impairment | 6,161
Commercial |
Allowance Balances: |
Individually evaluated for impairment | 223
Collectively evaluated for impairment | 46,892
Total Allowance for Loan Losses | 47,115
Loan Balances: |
Individually evaluated for impairment | 1,258
Collectively evaluated for impairment | 3,505,863
Financing Receivable, Evaluated for Impairment | 3,507,698
Commercial | Loans acquired with deteriorated credit quality |
Loan Balances: |
Financing Receivable, Evaluated for Impairment | 577
Commercial Real Estate |
Allowance Balances: |
Individually evaluated for impairment | 12,246
Collectively evaluated for impairment | 38,824
Total Allowance for Loan Losses | 51,070
Loan Balances: |
Individually evaluated for impairment | 51,605
Collectively evaluated for impairment | 3,805,808
Financing Receivable, Evaluated for Impairment | 3,862,997
Commercial Real Estate | Loans acquired with deteriorated credit quality |
Loan Balances: |
Financing Receivable, Evaluated for Impairment | 5,584
Consumer |
Allowance Balances: |
Individually evaluated for impairment | 0
Collectively evaluated for impairment | 9,648
Total Allowance for Loan Losses | 9,648
Loan Balances: |
Individually evaluated for impairment | 2
Collectively evaluated for impairment | 129,477
Financing Receivable, Evaluated for Impairment | 129,479
Residential |
Allowance Balances: |
Individually evaluated for impairment | 432
Collectively evaluated for impairment | 22,383
Total Allowance for Loan Losses | 22,815
Loan Balances: |
Individually evaluated for impairment | 3,291
Collectively evaluated for impairment | 1,739,709
Financing Receivable, Evaluated for Impairment | 1,743,000
Residential | Loans acquired with deteriorated credit quality |
Loan Balances: |
Financing Receivable, Evaluated for Impairment | $ 0

X
- Definition Allowance Balances [Abstract] + References No definition available. + Details
Name: | frme_AllowanceBalancesAbstract
Namespace Prefix: | frme_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Financing Receivable, Allowance for Credit Losses, Evaluated for Impairment + References No definition available. + Details
Name: | frme_FinancingReceivableAllowanceForCreditLossesEvaluatedForImpairment
Namespace Prefix: | frme_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Financing Receivable, Evaluated for Impairment + References No definition available. + Details
Name: | frme_FinancingReceivableEvaluatedForImpairment
Namespace Prefix: | frme_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Loan Balance [Abstract] + References No definition available. + Details
Name: | frme_LoanBalanceAbstract
Namespace Prefix: | frme_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953423-111524 + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953423-111524 + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The balance of financing receivables that were collectively evaluated for impairment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953423-111524 + Details
Name: | us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The balance of financing receivables that were individually evaluated for impairment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953423-111524 + Details
Name: | us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_CreditLossStatusAxis=us-gaap_FinancialAssetAcquiredWithCreditDeteriorationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_ConsumerLoanMember
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: |