XML 69 R58.htm IDEA: XBRL DOCUMENT
v3.20.2

Loans and Allowance for Credit Losses - Troubled Debt Restructurings Identified During Period (Detail) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2020 USD ($) Contract | Jun. 30, 2019 USD ($) Contract | Jun. 30, 2020 USD ($) Contract | Jun. 30, 2019 USD ($) Contract
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of Contracts | Contract | 5 | 10 | 16 | 20
Total Pre-Modification Outstanding Recorded Investment | $ 200 | $ 6,233 | $ 471 | $ 7,164
Post- Modification Outstanding Recorded Investment | 197 | 5,964 | 451 | 6,869
Troubled Debt Restructuring [Policy Text Block] | $ 0 | $ 969 | $ 0 | $ 1,006
Commercial, financial, agricultural and other [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of Contracts | Contract |  |  |  | 1
Total Pre-Modification Outstanding Recorded Investment |  |  |  | $ 61
Post- Modification Outstanding Recorded Investment |  |  |  | 62
Troubled Debt Restructuring [Policy Text Block] |  |  |  | $ 0
Residential real estate [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of Contracts | Contract | 2 | 5 | 4 | 11
Total Pre-Modification Outstanding Recorded Investment | $ 146 | $ 341 | $ 264 | $ 922
Post- Modification Outstanding Recorded Investment | 142 | 337 | 256 | 897
Troubled Debt Restructuring [Policy Text Block] | $ 0 | $ 969 | $ 0 | $ 37
Commercial Real Estate [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of Contracts | Contract |  | 2 | 2 | 3
Total Pre-Modification Outstanding Recorded Investment |  | $ 5,878 | $ 12 | $ 6,119
Post- Modification Outstanding Recorded Investment |  | 5,613 | 9 | 5,854
Troubled Debt Restructuring [Policy Text Block] |  | $ 0 | $ 0 | $ 969
Loans to individuals [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of Contracts | Contract | 3 | 3 | 10 | 5
Total Pre-Modification Outstanding Recorded Investment | $ 54 | $ 14 | $ 195 | $ 62
Post- Modification Outstanding Recorded Investment | 55 | 14 | 186 | 56
Troubled Debt Restructuring [Policy Text Block] | 0 | 0 | 0 | 0
Extended Maturity [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Total Pre-Modification Outstanding Recorded Investment | 0 | 0 | 0 | 17
Extended Maturity [Member] | Commercial, financial, agricultural and other [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Total Pre-Modification Outstanding Recorded Investment |  |  |  | 0
Extended Maturity [Member] | Residential real estate [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Total Pre-Modification Outstanding Recorded Investment | 0 | 0 | 0 | 17
Extended Maturity [Member] | Commercial Real Estate [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Total Pre-Modification Outstanding Recorded Investment |  | 0 | 0 | 0
Extended Maturity [Member] | Loans to individuals [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Total Pre-Modification Outstanding Recorded Investment | 0 | 0 | 0 | 0
Contractual Interest Rate Reduction [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Total Pre-Modification Outstanding Recorded Investment | 53 | 68 | 71 | 117
Contractual Interest Rate Reduction [Member] | Commercial, financial, agricultural and other [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Total Pre-Modification Outstanding Recorded Investment |  |  |  | 0
Contractual Interest Rate Reduction [Member] | Residential real estate [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Total Pre-Modification Outstanding Recorded Investment | 0 | 68 | 0 | 117
Contractual Interest Rate Reduction [Member] | Commercial Real Estate [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Total Pre-Modification Outstanding Recorded Investment |  | 0 | 0 | 0
Contractual Interest Rate Reduction [Member] | Loans to individuals [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Total Pre-Modification Outstanding Recorded Investment | 53 | 0 | 71 | 0
Contractual Payment Modification [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Total Pre-Modification Outstanding Recorded Investment | 147 | 6,165 | 400 | 7,030
Contractual Payment Modification [Member] | Commercial, financial, agricultural and other [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Total Pre-Modification Outstanding Recorded Investment |  |  |  | 61
Contractual Payment Modification [Member] | Residential real estate [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Total Pre-Modification Outstanding Recorded Investment | 146 | 273 | 264 | 788
Contractual Payment Modification [Member] | Commercial Real Estate [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Total Pre-Modification Outstanding Recorded Investment |  | 5,878 | 12 | 6,119
Contractual Payment Modification [Member] | Loans to individuals [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Total Pre-Modification Outstanding Recorded Investment | $ 1 | $ 14 | $ 124 | $ 62

X
- Definition Financing Receivable Troubled Debt Restructuring Specific Reserve + References No definition available. + Details
Name: | fcf_FinancingReceivableTroubledDebtRestructuringSpecificReserve
Namespace Prefix: | fcf_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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 http://asc.fasb.org/extlink&oid=121611835&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 http://asc.fasb.org/extlink&oid=121611835&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 http://asc.fasb.org/extlink&oid=121611835&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_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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

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

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_ConsumerLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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=fcf_ContractualPaymentModificationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |