XML 105 R90.htm IDEA: XBRL DOCUMENT
v3.3.1.900

Loans and Allowance for Credit Losses - Allowance for Credit Losses (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |
Beginning Balance | $ 52,051 | $ 54,225 | $ 67,187
Charge-offs | (18,868) | (17,472) | (35,178)
Recoveries | 2,681 | 4,102 | 2,989
Provision for credit losses | 14,948 | 11,196 | 19,227
Ending Balance | 50,812 | 52,051 | 54,225
Ending balance: individually evaluated for impaired | 7,045 | 9,461 | 8,824
Ending balance: collectively evaluated for impaired | 43,767 | 42,590 | 45,401
Ending balance | 4,683,750 | 4,457,308 | 4,283,833
Ending balance: individually evaluated for impaired | 44,009 | 48,442 | 52,595
Ending balance: collectively evaluated for impaired | 4,639,741 | 4,408,866 | 4,231,238
Commercial, financial, agricultural and other [Member] |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |
Beginning Balance | 29,627 | 22,663 | 19,852
Charge-offs | (11,429) | (8,911) | (18,399)
Recoveries | 1,097 | 734 | 455
Provision for credit losses | 11,740 | 15,141 | 20,755
Ending Balance | 31,035 | 29,627 | 22,663
Ending balance: individually evaluated for impaired | 6,952 | 9,304 | 7,364
Ending balance: collectively evaluated for impaired | 24,083 | 20,323 | 15,299
Ending balance | 1,150,906 | 1,052,109 | 1,021,056
Ending balance: individually evaluated for impaired | 30,767 | 33,332 | 27,251
Ending balance: collectively evaluated for impaired | 1,120,139 | 1,018,777 | 993,805
Real estate construction [Member] |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |
Beginning Balance | 2,063 | 6,600 | 8,928
Charge-offs | (8) | (296) | (773)
Recoveries | 84 | 1,340 | 501
Provision for credit losses | (1,252) | (5,581) | (2,056)
Ending Balance | 887 | 2,063 | 6,600
Ending balance: individually evaluated for impaired | 0 | 0 | 94
Ending balance: collectively evaluated for impaired | 887 | 2,063 | 6,506
Ending balance | 220,736 | 120,785 | 93,289
Ending balance: individually evaluated for impaired | 0 | 193 | 3,844
Ending balance: collectively evaluated for impaired | 220,736 | 120,592 | 89,445
Residential real estate [Member] |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |
Beginning Balance | 3,664 | 7,727 | 5,908
Charge-offs | (1,539) | (3,153) | (1,814)
Recoveries | 587 | 650 | 1,264
Provision for credit losses | (106) | (1,560) | 2,369
Ending Balance | 2,606 | 3,664 | 7,727
Ending balance: individually evaluated for impaired | 51 | 56 | 1,282
Ending balance: collectively evaluated for impaired | 2,555 | 3,608 | 6,445
Ending balance | 1,224,465 | 1,226,344 | 1,262,718
Ending balance: individually evaluated for impaired | 6,099 | 7,127 | 9,349
Ending balance: collectively evaluated for impaired | 1,218,366 | 1,219,217 | 1,253,369
Commercial real estate [Member] |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |
Beginning Balance | 11,881 | 11,778 | 22,441
Charge-offs | (1,538) | (1,148) | (10,513)
Recoveries | 229 | 612 | 136
Provision for credit losses | 1,352 | 639 | (286)
Ending Balance | 11,924 | 11,881 | 11,778
Ending balance: individually evaluated for impaired | 42 | 101 | 84
Ending balance: collectively evaluated for impaired | 11,882 | 11,780 | 11,694
Ending balance | 1,479,000 | 1,405,256 | 1,296,472
Ending balance: individually evaluated for impaired | 7,143 | 7,790 | 12,151
Ending balance: collectively evaluated for impaired | 1,471,857 | 1,397,466 | 1,284,321
Loans to individuals [Member] |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |
Beginning Balance | 4,816 | 5,457 | 4,132
Charge-offs | (4,354) | (3,964) | (3,679)
Recoveries | 684 | 766 | 633
Provision for credit losses | 3,214 | 2,557 | 4,371
Ending Balance | 4,360 | 4,816 | 5,457
Ending balance: individually evaluated for impaired | 0 | 0 | 0
Ending balance: collectively evaluated for impaired | 4,360 | 4,816 | 5,457
Ending balance | 608,643 | 652,814 | 610,298
Ending balance: individually evaluated for impaired | 0 | 0 | 0
Ending balance: collectively evaluated for impaired | $ 608,643 | 652,814 | 610,298
Unallocated [Member] |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |
Beginning Balance |  | $ 0 | 5,926
Charge-offs |  |  | 0
Recoveries |  |  | 0
Provision for credit losses |  |  | (5,926)
Ending Balance |  |  | 0
Ending balance: individually evaluated for impaired |  |  | 0
Ending balance: collectively evaluated for impaired |  |  | $ 0

X
- Definition A valuation allowance for financing receivables that are expected to be uncollectible. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953423-111524 + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLosses
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=35738203&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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953423-111524 + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount of recovery of financing receivables doubtful of collection that were previously charged off. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(4) -URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953423-111524 + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesRollForward
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of direct write-downs of financing receivables charged against the allowance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953423-111524 + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The balance of financing receivables that were collectively evaluated for impairment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=35738203&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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953423-111524 + Details
Name: | us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=28367877&loc=d3e4428-111522 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=35738203&loc=d3e5074-111524 + Details
Name: | us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of expense related to estimated loss from loan and lease transactions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.11) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=35738203&loc=SL6953423-111524 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 11 -Article 9 + Details
Name: | us-gaap_ProvisionForLoanAndLeaseLosses
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

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

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

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

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