XML 83 R58.htm IDEA: XBRL DOCUMENT
v3.3.0.814

Loans and Allowance for Credit Losses - Troubled Debt Restructurings Identified During Period (Detail) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2015 USD ($) Contract | Sep. 30, 2014 USD ($) Contract | Sep. 30, 2015 USD ($) Contract | Sep. 30, 2014 USD ($) Contract
Financing Receivable, Modifications [Line Items] |  |  |  |
Financing Receivable Modification Number Of Contracts | Contract | 11 | 27 |  |
Number of Contracts | Contract |  |  | 37 | 60
Total Pre-Modification Outstanding Recorded Investment |  |  | $ 4,217 | $ 3,871
Post- Modification Outstanding Recorded Investment |  |  | $ 3,963 | $ 3,846
Financing Receivable Modifications Extend Maturity | $ 0 | $ 0 |  |
Financing Receivable Modifications Modify Rate | 0 | 172 |  |
Financing Receivable Modifications Modify Payments | 1,016 | 1,131 |  |
Financing Receivable, Modifications, Pre-Mod Recorded Investment | 1,016 | 1,303 |  |
Financing Receivable, Modification, Post-Modification Recorded Investment | $ 996 | $ 1,253 |  |
Financing Receivable, Modifications, Determination of Allowance for Credit Losses | 0 | 2000 | 52000 | 49000
Commercial, financial, agricultural and other [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Financing Receivable Modification Number Of Contracts | Contract | 1 |  |  |
Number of Contracts | Contract |  |  | 4 | 2
Total Pre-Modification Outstanding Recorded Investment |  |  | $ 2,403 | $ 1,505
Post- Modification Outstanding Recorded Investment |  |  | $ 2,314 | $ 1,648
Financing Receivable Modifications Extend Maturity | $ 0 |  |  |
Financing Receivable Modifications Modify Rate | 0 |  |  |
Financing Receivable Modifications Modify Payments | 543 |  |  |
Financing Receivable, Modifications, Pre-Mod Recorded Investment | 543 |  |  |
Financing Receivable, Modification, Post-Modification Recorded Investment | $ 525 |  |  |
Financing Receivable, Modifications, Determination of Allowance for Credit Losses | 0 |  | 52 | 27
Residential real estate [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Financing Receivable Modification Number Of Contracts | Contract | 8 | 24 |  |
Number of Contracts | Contract |  |  | 24 | 44
Total Pre-Modification Outstanding Recorded Investment |  |  | $ 1,254 | $ 2,235
Post- Modification Outstanding Recorded Investment |  |  | $ 1,165 | $ 2,091
Financing Receivable Modifications Extend Maturity | $ 0 | $ 0 |  |
Financing Receivable Modifications Modify Rate | 0 | 164 |  |
Financing Receivable Modifications Modify Payments | 455 | 1,116 |  |
Financing Receivable, Modifications, Pre-Mod Recorded Investment | 455 | 1,280 |  |
Financing Receivable, Modification, Post-Modification Recorded Investment | $ 455 | $ 1,233 |  |
Financing Receivable, Modifications, Determination of Allowance for Credit Losses | 0 | 2 | 0 | 22
Commercial Real Estate [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Number of Contracts | Contract |  |  | 1 | 1
Total Pre-Modification Outstanding Recorded Investment |  |  | $ 464 | $ 8
Post- Modification Outstanding Recorded Investment |  |  | $ 407 | $ 6
Financing Receivable, Modifications, Determination of Allowance for Credit Losses |  |  | 0 | 0
Loans to individuals [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Financing Receivable Modification Number Of Contracts | Contract | 2 | 3 |  |
Number of Contracts | Contract |  |  | 8 | 13
Total Pre-Modification Outstanding Recorded Investment |  |  | $ 96 | $ 123
Post- Modification Outstanding Recorded Investment |  |  | $ 77 | $ 101
Financing Receivable Modifications Extend Maturity | $ 0 | $ 0 |  |
Financing Receivable Modifications Modify Rate | 0 | 8 |  |
Financing Receivable Modifications Modify Payments | 18 | 15 |  |
Financing Receivable, Modifications, Pre-Mod Recorded Investment | 18 | 23 |  |
Financing Receivable, Modification, Post-Modification Recorded Investment | $ 16 | $ 20 |  |
Financing Receivable, Modifications, Determination of Allowance for Credit Losses | 0 | 0 | 0 | 0
Extended Maturity [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Total Pre-Modification Outstanding Recorded Investment |  |  | $ 1,751 | $ 1,505
Extended Maturity [Member] | Commercial, financial, agricultural and other [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Total Pre-Modification Outstanding Recorded Investment |  |  | 1,751 | 1,505
Extended Maturity [Member] | Residential real estate [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Total Pre-Modification Outstanding Recorded Investment |  |  | 0 | 0
Extended Maturity [Member] | Commercial Real Estate [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Total Pre-Modification Outstanding Recorded Investment |  |  | 0 | 0
Extended Maturity [Member] | Loans to individuals [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Total Pre-Modification Outstanding Recorded Investment |  |  | 0 | 0
Contractual Interest Rate Reduction [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Total Pre-Modification Outstanding Recorded Investment |  |  | 357 | 549
Contractual Interest Rate Reduction [Member] | Commercial, financial, agricultural and other [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Total Pre-Modification Outstanding Recorded Investment |  |  | 0 | 0
Contractual Interest Rate Reduction [Member] | Residential real estate [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Total Pre-Modification Outstanding Recorded Investment |  |  | 296 | 468
Contractual Interest Rate Reduction [Member] | Commercial Real Estate [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Total Pre-Modification Outstanding Recorded Investment |  |  | 0 | 0
Contractual Interest Rate Reduction [Member] | Loans to individuals [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Total Pre-Modification Outstanding Recorded Investment |  |  | 61 | 81
Contractual Payment Modification [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Total Pre-Modification Outstanding Recorded Investment |  |  | 2,109 | 1,817
Contractual Payment Modification [Member] | Commercial, financial, agricultural and other [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Total Pre-Modification Outstanding Recorded Investment |  |  | 652 | 0
Contractual Payment Modification [Member] | Residential real estate [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Total Pre-Modification Outstanding Recorded Investment |  |  | 958 | 1,767
Contractual Payment Modification [Member] | Commercial Real Estate [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Total Pre-Modification Outstanding Recorded Investment |  |  | 464 | 8
Contractual Payment Modification [Member] | Loans to individuals [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Total Pre-Modification Outstanding Recorded Investment |  |  | $ 35 | $ 42

X
- Definition Financing receivable modifications number of contracts. + References No definition available. + Details
Name: | fcf_FinancingReceivableModificationNumberOfContracts
Namespace Prefix: | fcf_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Financing Receivable, Modification, Post-Modification Recorded Investment + References No definition available. + Details
Name: | fcf_FinancingReceivableModificationPostModificationRecordedInvestment
Namespace Prefix: | fcf_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Financing receivable modifications, extend maturity. + References No definition available. + Details
Name: | fcf_FinancingReceivableModificationsExtendMaturity
Namespace Prefix: | fcf_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Financing receivable, modifications, modify payments. + References No definition available. + Details
Name: | fcf_FinancingReceivableModificationsModifyPayments
Namespace Prefix: | fcf_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Financing receivable, modifications, modify rate. + References No definition available. + Details
Name: | fcf_FinancingReceivableModificationsModifyRate
Namespace Prefix: | fcf_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Financing Receivable, Modifications, Pre-Modification Recorded Investment + References No definition available. + Details
Name: | fcf_FinancingReceivableModificationsPreModRecordedInvestment
Namespace Prefix: | fcf_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Description of how troubled debt restructurings that occurred during the period are factored into the determination of the allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953676-111524 + Details
Name: | us-gaap_FinancingReceivableModificationsDeterminationOfAllowanceForCreditLosses1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
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/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953676-111524 + Details
Name: | us-gaap_FinancingReceivableModificationsNumberOfContracts2
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Post-modification amount of investment in financing receivables modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953676-111524 + Details
Name: | us-gaap_FinancingReceivableModificationsPostModificationRecordedInvestment2
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Pre-modification amount of investment in financing receivables modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=49124121&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_ResidentialPortfolioSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivablePortfolioSegmentAxis=us-gaap_CommercialRealEstatePortfolioSegmentMember
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: |