XML 75 R60.htm IDEA: XBRL DOCUMENT v3.24.2.u1

Loans and Allowance for Credit Losses - Modified Payment Status (Detail) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Financing Receivable, Troubled Debt Restructuring [Line Items]
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2	$ 12,187	$ 10,471
Financial Asset, Not Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2	11,552	10,471
Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2	635	0
Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2	0	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2	0	0
Residential real estate [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2	808	758
Residential real estate [Member] | Financial Asset, Not Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2	570	758
Residential real estate [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2	238	0
Residential real estate [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2	0	0
Residential real estate [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2	0	0
Residential real estate [Member] | Senior Lien
Financing Receivable, Troubled Debt Restructuring [Line Items]
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2	779	758
Residential real estate [Member] | Senior Lien | Financial Asset, Not Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2	541	758
Residential real estate [Member] | Senior Lien | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2	238	0
Residential real estate [Member] | Senior Lien | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2	0	0
Residential real estate [Member] | Senior Lien | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2	0	0
Residential real estate [Member] | Junior Lien
Financing Receivable, Troubled Debt Restructuring [Line Items]
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2	29
Residential real estate [Member] | Junior Lien | Financial Asset, Not Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2	29
Residential real estate [Member] | Junior Lien | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2	0
Residential real estate [Member] | Junior Lien | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2	0
Residential real estate [Member] | Junior Lien | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2	0
Commercial, financial, agricultural and other [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2	1,518	50
Commercial, financial, agricultural and other [Member] | Financial Asset, Not Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2	1,273	50
Commercial, financial, agricultural and other [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2	245	0
Commercial, financial, agricultural and other [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2	0	0
Commercial, financial, agricultural and other [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2	0	0
Commercial, financial, agricultural and other [Member] | Equipment Finance
Financing Receivable, Troubled Debt Restructuring [Line Items]
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2	168
Commercial, financial, agricultural and other [Member] | Equipment Finance | Financial Asset, Not Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2	168
Commercial, financial, agricultural and other [Member] | Equipment Finance | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2	0
Commercial, financial, agricultural and other [Member] | Equipment Finance | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2	0
Commercial, financial, agricultural and other [Member] | Equipment Finance | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2	0
Commercial, financial, agricultural and other [Member] | Time and Demand Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2	1,350	50
Commercial, financial, agricultural and other [Member] | Time and Demand Loans | Financial Asset, Not Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2	1,105	50
Commercial, financial, agricultural and other [Member] | Time and Demand Loans | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2	245	0
Commercial, financial, agricultural and other [Member] | Time and Demand Loans | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2	0	0
Commercial, financial, agricultural and other [Member] | Time and Demand Loans | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2	0	0
Commercial Real Estate [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2	9,827	9,663
Commercial Real Estate [Member] | Financial Asset, Not Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2	9,675	9,663
Commercial Real Estate [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2	152	0
Commercial Real Estate [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2	0	0
Commercial Real Estate [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2	0	0
Commercial Real Estate [Member] | Owner Occupied Commercial Real Estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2	9,827	9,663
Commercial Real Estate [Member] | Owner Occupied Commercial Real Estate | Financial Asset, Not Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2	9,675	9,663
Commercial Real Estate [Member] | Owner Occupied Commercial Real Estate | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2	152	0
Commercial Real Estate [Member] | Owner Occupied Commercial Real Estate | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2	0	0
Commercial Real Estate [Member] | Owner Occupied Commercial Real Estate | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2	0	$ 0
Loans to individuals [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2	34
Loans to individuals [Member] | Financial Asset, Not Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2	34
Loans to individuals [Member] | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2	0
Loans to individuals [Member] | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2	0
Loans to individuals [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2	0
Loans to individuals [Member] | Automobile Loan
Financing Receivable, Troubled Debt Restructuring [Line Items]
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2	34
Loans to individuals [Member] | Automobile Loan | Financial Asset, Not Past Due
Financing Receivable, Troubled Debt Restructuring [Line Items]
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2	34
Loans to individuals [Member] | Automobile Loan | Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2	0
Loans to individuals [Member] | Automobile Loan | Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2	0
Loans to individuals [Member] | Automobile Loan | Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2	$ 0

X

- Definition

Financing Receivable, Modified in Period, Aging, Amount

+ References

No definition available.

+ Details

Name:	fcf_FinancingReceivableModifiedInPeriodAgingAmount
Namespace Prefix:	fcf_
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

Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 34
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481962/310-10-50-34

Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 33
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481962/310-10-50-33

Reference 3: http://www.xbrl.org/2003/role/exampleRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 12A
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481933/310-10-55-12A

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 42
-Subparagraph (a)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481962/310-10-50-42

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 42
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481962/310-10-50-42

+ Details

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

X

- Details

Name:	us-gaap_FinancingReceivablesPeriodPastDueAxis=us-gaap_FinancialAssetNotPastDueMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivablesPeriodPastDueAxis=us-gaap_FinancingReceivables30To59DaysPastDueMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivablesPeriodPastDueAxis=us-gaap_FinancingReceivables60To89DaysPastDueMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivablesPeriodPastDueAxis=us-gaap_FinancingReceivablesEqualToGreaterThan90DaysPastDueMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=us-gaap_ResidentialRealEstateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_SeniorLienMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_JuniorLienMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=us-gaap_CommercialLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=fcf_EquipmentFinanceMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=fcf_TimeAndDemandLoansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=us-gaap_CommercialRealEstateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=fcf_OwnerOccupiedCommercialRealEstateMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=us-gaap_ConsumerLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_AutomobileLoanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: