XML 58 R67.htm IDEA: XBRL DOCUMENT
v3.19.3

Loans and Allowance for Credit Losses - Troubled Debt Restructurings Identified During Period (Detail) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2019 USD ($) Contract | Sep. 30, 2018 USD ($) Contract | Sep. 30, 2019 USD ($) Contract | Sep. 30, 2018 USD ($) Contract
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of Contracts | Contract | 6 | 14 | 26 | 42
Total Pre-Modification Outstanding Recorded Investment | $ 217 | $ 482 | $ 7,381 | $ 10,600
Post- Modification Outstanding Recorded Investment | 215 | 452 | 6,917 | 9,547
Troubled Debt Restructuring [Policy Text Block] | $ 0 | $ 0 | $ 398 | $ 2,811
Commercial, financial, agricultural and other [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of Contracts | Contract | 1 | 1 | 2 | 3
Total Pre-Modification Outstanding Recorded Investment | $ 95 | $ 74 | $ 156 | $ 8,324
Post- Modification Outstanding Recorded Investment | 96 | 74 | 157 | 7,393
Troubled Debt Restructuring [Policy Text Block] | $ 0 | $ 0 | $ 0 | $ 2,811
Residential real estate [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of Contracts | Contract | 3 | 7 | 14 | 24
Total Pre-Modification Outstanding Recorded Investment | $ 85 | $ 365 | $ 1,008 | $ 1,189
Post- Modification Outstanding Recorded Investment | 85 | 338 | 933 | 1,108
Troubled Debt Restructuring [Policy Text Block] | $ 0 | $ 0 | $ 1 | $ 0
Commercial Real Estate [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of Contracts | Contract |  |  | 3 | 2
Total Pre-Modification Outstanding Recorded Investment |  |  | $ 6,119 | $ 966
Post- Modification Outstanding Recorded Investment |  |  | 5,740 | 943
Troubled Debt Restructuring [Policy Text Block] |  |  | $ 397 | $ 0
Loans to individuals [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Number of Contracts | Contract | 2 | 6 | 7 | 13
Total Pre-Modification Outstanding Recorded Investment | $ 37 | $ 43 | $ 98 | $ 121
Post- Modification Outstanding Recorded Investment | 34 | 40 | 87 | 103
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 | 139 | 17 | 159
Extended Maturity [Member] | Commercial, financial, agricultural and other [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Total Pre-Modification Outstanding Recorded Investment | 0 | 74 | 0 | 74
Extended Maturity [Member] | Residential real estate [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Total Pre-Modification Outstanding Recorded Investment | 0 | 65 | 17 | 85
Extended Maturity [Member] | Commercial Real Estate [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Total Pre-Modification Outstanding Recorded Investment |  |  | 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 | 32 | 96 | 149 | 222
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 | 0 | 0 | 0
Contractual Interest Rate Reduction [Member] | Residential real estate [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Total Pre-Modification Outstanding Recorded Investment | 32 | 70 | 149 | 145
Contractual Interest Rate Reduction [Member] | Commercial Real Estate [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Total Pre-Modification Outstanding Recorded Investment |  |  | 0 | 0
Contractual Interest Rate Reduction [Member] | Loans to individuals [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Total Pre-Modification Outstanding Recorded Investment | 0 | 26 | 0 | 77
Contractual Payment Modification [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Total Pre-Modification Outstanding Recorded Investment | 185 | 247 | 7,215 | 10,219
Contractual Payment Modification [Member] | Commercial, financial, agricultural and other [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Total Pre-Modification Outstanding Recorded Investment | 95 | 0 | 156 | 8,250
Contractual Payment Modification [Member] | Residential real estate [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Total Pre-Modification Outstanding Recorded Investment | 53 | 230 | 842 | 959
Contractual Payment Modification [Member] | Commercial Real Estate [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Total Pre-Modification Outstanding Recorded Investment |  |  | 6,119 | 966
Contractual Payment Modification [Member] | Loans to individuals [Member] |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Total Pre-Modification Outstanding Recorded Investment | $ 37 | $ 17 | $ 98 | $ 44

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=118936363&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=118936363&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=118936363&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: |