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v2.4.1.9

Condensed Financial Information of First Commonwealth Financial Corporation (Parent Company Only) - Statements of Financial Condition (Detail) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
--- | --- | --- | --- | ---
Assets |  |  |  |
Loans | $ 4,405,257us-gaap_LoansAndLeasesReceivableNetReportedAmount | $ 4,229,608us-gaap_LoansAndLeasesReceivableNetReportedAmount |  |
Premises and equipment, net | 64,989us-gaap_PropertyPlantAndEquipmentNet | 67,940us-gaap_PropertyPlantAndEquipmentNet |  |
Other assets | 110,777us-gaap_OtherAssets | 138,698us-gaap_OtherAssets |  |
Total assets | 6,360,285us-gaap_Assets | 6,214,861us-gaap_Assets |  |
Liabilities and Shareholders' Equity |  |  |  |
Subordinated debentures payable | 72,167us-gaap_SubordinatedDebt | 72,167us-gaap_SubordinatedDebt |  |
Shareholders' equity | 716,145us-gaap_StockholdersEquity | 711,697us-gaap_StockholdersEquity | 746,007us-gaap_StockholdersEquity | 758,543us-gaap_StockholdersEquity
Total liabilities and shareholders’ equity | 6,360,285us-gaap_LiabilitiesAndStockholdersEquity | 6,214,861us-gaap_LiabilitiesAndStockholdersEquity |  |
Parent [Member] |  |  |  |
Assets |  |  |  |
Cash | 10,402us-gaap_Cash / dei_LegalEntityAxis = us-gaap_ParentMember | 8,370us-gaap_Cash / dei_LegalEntityAxis = us-gaap_ParentMember |  |
Loans | 24us-gaap_LoansAndLeasesReceivableNetReportedAmount / dei_LegalEntityAxis = us-gaap_ParentMember | 27us-gaap_LoansAndLeasesReceivableNetReportedAmount / dei_LegalEntityAxis = us-gaap_ParentMember |  |
Investment in subsidiaries | 712,610us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / dei_LegalEntityAxis = us-gaap_ParentMember | 696,438us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / dei_LegalEntityAxis = us-gaap_ParentMember |  |
Investment in unconsolidated subsidiary trusts | 2,182fcf_InvestmentsInUnconsolidatedSubsidiaries / dei_LegalEntityAxis = us-gaap_ParentMember | 2,182fcf_InvestmentsInUnconsolidatedSubsidiaries / dei_LegalEntityAxis = us-gaap_ParentMember |  |
Investment in Jointly-Owned Company | 8,749fcf_InvestmentinJointlyOwnedCompany / dei_LegalEntityAxis = us-gaap_ParentMember | 8,559fcf_InvestmentinJointlyOwnedCompany / dei_LegalEntityAxis = us-gaap_ParentMember |  |
Premises and equipment, net | 4,287us-gaap_PropertyPlantAndEquipmentNet / dei_LegalEntityAxis = us-gaap_ParentMember | 6,376us-gaap_PropertyPlantAndEquipmentNet / dei_LegalEntityAxis = us-gaap_ParentMember |  |
Recievable from subsidiaries | 0fcf_ReceivablesFromSubsidiaries / dei_LegalEntityAxis = us-gaap_ParentMember | 267fcf_ReceivablesFromSubsidiaries / dei_LegalEntityAxis = us-gaap_ParentMember |  |
Dividends receivable from subsidiaries | 0us-gaap_DividendsReceivable / dei_LegalEntityAxis = us-gaap_ParentMember | 1,319us-gaap_DividendsReceivable / dei_LegalEntityAxis = us-gaap_ParentMember |  |
Other assets | 50,988us-gaap_OtherAssets / dei_LegalEntityAxis = us-gaap_ParentMember | 62,633us-gaap_OtherAssets / dei_LegalEntityAxis = us-gaap_ParentMember |  |
Total assets | 789,242us-gaap_Assets / dei_LegalEntityAxis = us-gaap_ParentMember | 786,171us-gaap_Assets / dei_LegalEntityAxis = us-gaap_ParentMember |  |
Liabilities and Shareholders' Equity |  |  |  |
Accrued expenses and other liabilities | 930us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_ParentMember | 2,307us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_ParentMember |  |
Subordinated debentures payable | 72,167us-gaap_SubordinatedDebt / dei_LegalEntityAxis = us-gaap_ParentMember | 72,167us-gaap_SubordinatedDebt / dei_LegalEntityAxis = us-gaap_ParentMember |  |
Shareholders' equity | 716,145us-gaap_StockholdersEquity / dei_LegalEntityAxis = us-gaap_ParentMember | 711,697us-gaap_StockholdersEquity / dei_LegalEntityAxis = us-gaap_ParentMember |  |
Total liabilities and shareholders’ equity | $ 789,242us-gaap_LiabilitiesAndStockholdersEquity / dei_LegalEntityAxis = us-gaap_ParentMember | $ 786,171us-gaap_LiabilitiesAndStockholdersEquity / dei_LegalEntityAxis = us-gaap_ParentMember |  |

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