XML 59 R65.htm IDEA: XBRL DOCUMENT v2.4.1.9
Allowance for Loan Losses and Recorded Investment in Loans, Evaluated for Impairment Excluding PCI Loans, by Loan Class (Detail) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Financing Receivable, Recorded Investment [Line Items]    
Loans Individually Evaluated for Impairment $ 19,769us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment $ 16,048us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
Allowance for Loans Individually Evaluated 1,755us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1 1,482us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
Loans Collectively Evaluated for Impairment 1,591,330us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment 1,611,085us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
Allowance for Loans Collectively Evaluated 18,383us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment 18,687us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
Commercial Loans    
Financing Receivable, Recorded Investment [Line Items]    
Loans Individually Evaluated for Impairment 13,709us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember		 10,310us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember
Allowance for Loans Individually Evaluated 1,238us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember		 1,045us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember
Loans Collectively Evaluated for Impairment 853,836us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember		 878,292us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember
Allowance for Loans Collectively Evaluated 11,816us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember		 11,965us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember
Commercial Loans | Construction Development And Other Land    
Financing Receivable, Recorded Investment [Line Items]    
Loans Collectively Evaluated for Impairment 47,281us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= fcbc_ConstructionDevelopmentAndOtherLandMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember		 51,608us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= fcbc_ConstructionDevelopmentAndOtherLandMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember
Allowance for Loans Collectively Evaluated 1,253us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= fcbc_ConstructionDevelopmentAndOtherLandMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember		 1,151us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= fcbc_ConstructionDevelopmentAndOtherLandMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember
Commercial Loans | Commercial and Industrial    
Financing Receivable, Recorded Investment [Line Items]    
Loans Collectively Evaluated for Impairment 80,480us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= fcbc_CommercialAndIndustrialMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember		 85,353us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= fcbc_CommercialAndIndustrialMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember
Allowance for Loans Collectively Evaluated 541us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= fcbc_CommercialAndIndustrialMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember		 690us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= fcbc_CommercialAndIndustrialMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember
Commercial Loans | Multi-family Residential    
Financing Receivable, Recorded Investment [Line Items]    
Loans Collectively Evaluated for Impairment 97,803us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= fcbc_MultiFamilyResidentialMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember		 98,880us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= fcbc_MultiFamilyResidentialMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember
Allowance for Loans Collectively Evaluated 1,772us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= fcbc_MultiFamilyResidentialMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember		 1,917us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= fcbc_MultiFamilyResidentialMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember
Commercial Loans | Single-family Non-owner Occupied    
Financing Receivable, Recorded Investment [Line Items]    
Loans Individually Evaluated for Impairment 828us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= fcbc_SingleFamilyNonOwnerOccupiedMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember		 833us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= fcbc_SingleFamilyNonOwnerOccupiedMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember
Allowance for Loans Individually Evaluated 40us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
/ us-gaap_FinancialInstrumentAxis
= fcbc_SingleFamilyNonOwnerOccupiedMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember		 45us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
/ us-gaap_FinancialInstrumentAxis
= fcbc_SingleFamilyNonOwnerOccupiedMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember
Loans Collectively Evaluated for Impairment 136,621us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= fcbc_SingleFamilyNonOwnerOccupiedMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember		 135,223us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= fcbc_SingleFamilyNonOwnerOccupiedMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember
Allowance for Loans Collectively Evaluated 3,103us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= fcbc_SingleFamilyNonOwnerOccupiedMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember		 3,183us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= fcbc_SingleFamilyNonOwnerOccupiedMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember
Commercial Loans | Non-farm, Non-residential    
Financing Receivable, Recorded Investment [Line Items]    
Loans Individually Evaluated for Impairment 12,881us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= fcbc_NonFarmNonResidentialMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember		 9,477us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= fcbc_NonFarmNonResidentialMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember
Allowance for Loans Individually Evaluated 1,198us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
/ us-gaap_FinancialInstrumentAxis
= fcbc_NonFarmNonResidentialMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember		 1,000us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
/ us-gaap_FinancialInstrumentAxis
= fcbc_NonFarmNonResidentialMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember
Loans Collectively Evaluated for Impairment 460,597us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= fcbc_NonFarmNonResidentialMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember		 475,353us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= fcbc_NonFarmNonResidentialMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember
Allowance for Loans Collectively Evaluated 4,949us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= fcbc_NonFarmNonResidentialMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember		 4,805us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= fcbc_NonFarmNonResidentialMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember
Commercial Loans | Agricultural    
Financing Receivable, Recorded Investment [Line Items]    
Loans Collectively Evaluated for Impairment 1,713us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= fcbc_AgriculturalMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember		 1,642us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= fcbc_AgriculturalMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember
Allowance for Loans Collectively Evaluated 13us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= fcbc_AgriculturalMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember		 13us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= fcbc_AgriculturalMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember
Commercial Loans | Farmland Loan    
Financing Receivable, Recorded Investment [Line Items]    
Loans Collectively Evaluated for Impairment 29,341us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= fcbc_FarmlandMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember		 30,233us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= fcbc_FarmlandMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember
Allowance for Loans Collectively Evaluated 185us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= fcbc_FarmlandMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember		 206us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= fcbc_FarmlandMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember
Consumer Real Estate    
Financing Receivable, Recorded Investment [Line Items]    
Loans Individually Evaluated for Impairment 6,060us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fcbc_ConsumerRealEstateMember		 5,738us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fcbc_ConsumerRealEstateMember
Allowance for Loans Individually Evaluated 517us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fcbc_ConsumerRealEstateMember		 437us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fcbc_ConsumerRealEstateMember
Loans Collectively Evaluated for Impairment 661,089us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fcbc_ConsumerRealEstateMember		 656,809us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fcbc_ConsumerRealEstateMember
Allowance for Loans Collectively Evaluated 5,929us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fcbc_ConsumerRealEstateMember		 6,052us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fcbc_ConsumerRealEstateMember
Consumer Real Estate | Home Equity Lines    
Financing Receivable, Recorded Investment [Line Items]    
Loans Collectively Evaluated for Impairment 131,002us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= us-gaap_HomeEquityMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fcbc_ConsumerRealEstateMember		 134,006us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= us-gaap_HomeEquityMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fcbc_ConsumerRealEstateMember
Allowance for Loans Collectively Evaluated 1,290us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= us-gaap_HomeEquityMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fcbc_ConsumerRealEstateMember		 1,330us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= us-gaap_HomeEquityMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fcbc_ConsumerRealEstateMember
Consumer Real Estate | Single Family Owner Occupied    
Financing Receivable, Recorded Investment [Line Items]    
Loans Individually Evaluated for Impairment 6,060us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= fcbc_SingleFamilyOwnerOccupiedLoanMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fcbc_ConsumerRealEstateMember		 5,738us-gaap_FinancingReceivableIndividuallyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= fcbc_SingleFamilyOwnerOccupiedLoanMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fcbc_ConsumerRealEstateMember
Allowance for Loans Individually Evaluated 517us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
/ us-gaap_FinancialInstrumentAxis
= fcbc_SingleFamilyOwnerOccupiedLoanMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fcbc_ConsumerRealEstateMember		 437us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
/ us-gaap_FinancialInstrumentAxis
= fcbc_SingleFamilyOwnerOccupiedLoanMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fcbc_ConsumerRealEstateMember
Loans Collectively Evaluated for Impairment 494,584us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= fcbc_SingleFamilyOwnerOccupiedLoanMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fcbc_ConsumerRealEstateMember		 489,820us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= fcbc_SingleFamilyOwnerOccupiedLoanMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fcbc_ConsumerRealEstateMember
Allowance for Loans Collectively Evaluated 4,404us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= fcbc_SingleFamilyOwnerOccupiedLoanMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fcbc_ConsumerRealEstateMember		 4,498us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= fcbc_SingleFamilyOwnerOccupiedLoanMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fcbc_ConsumerRealEstateMember
Consumer Real Estate | Owner Occupied Construction    
Financing Receivable, Recorded Investment [Line Items]    
Loans Collectively Evaluated for Impairment 35,503us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= fcbc_OwnerOccupiedConstructionMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fcbc_ConsumerRealEstateMember		 32,983us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= fcbc_OwnerOccupiedConstructionMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fcbc_ConsumerRealEstateMember
Allowance for Loans Collectively Evaluated 235us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= fcbc_OwnerOccupiedConstructionMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fcbc_ConsumerRealEstateMember		 224us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= fcbc_OwnerOccupiedConstructionMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fcbc_ConsumerRealEstateMember
Consumer and Other    
Financing Receivable, Recorded Investment [Line Items]    
Loans Collectively Evaluated for Impairment 76,405us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fcbc_ConsumerAndOtherPortfolioSegmentMember		 75,984us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fcbc_ConsumerAndOtherPortfolioSegmentMember
Allowance for Loans Collectively Evaluated 638us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fcbc_ConsumerAndOtherPortfolioSegmentMember		 670us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fcbc_ConsumerAndOtherPortfolioSegmentMember
Consumer and Other | Consumer Loan    
Financing Receivable, Recorded Investment [Line Items]    
Loans Collectively Evaluated for Impairment 69,169us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fcbc_ConsumerAndOtherPortfolioSegmentMember		 69,429us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fcbc_ConsumerAndOtherPortfolioSegmentMember
Allowance for Loans Collectively Evaluated 638us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fcbc_ConsumerAndOtherPortfolioSegmentMember		 670us-gaap_FinancingReceivableAllowanceForCreditLossesCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= us-gaap_ConsumerLoanMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fcbc_ConsumerAndOtherPortfolioSegmentMember
Consumer and Other | Other    
Financing Receivable, Recorded Investment [Line Items]    
Loans Collectively Evaluated for Impairment $ 7,236us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= fcbc_OtherLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fcbc_ConsumerAndOtherPortfolioSegmentMember		 $ 6,555us-gaap_FinancingReceivableCollectivelyEvaluatedForImpairment
/ us-gaap_FinancialInstrumentAxis
= fcbc_OtherLoansMember
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= fcbc_ConsumerAndOtherPortfolioSegmentMember