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Retirement Plans - Additional Information (Detail) (USD $)
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Defined Benefit Plan Disclosure [Line Items]    
Matching contribution to 401(k) plan $ 394,000us-gaap_DefinedContributionPlanEmployerDiscretionaryContributionAmount $ 204,000us-gaap_DefinedContributionPlanEmployerDiscretionaryContributionAmount
Employer matching contribution description In conjunction with freezing the pension plan, the Company changed the matching contribution calculation from twenty-five percent of the first six percent of an employee's contribution to 100% of an employee's first three percent contributed and 50% of the next two percent contributed.  
Pension plan eligibility age of employees 20 years 6 months  
Pension plan eligibility service period of employees 6 months  
Pension plan eligibility service hours of employees 1000 hours  
Additional benefits under pension plan 0fcza_AdditionalBenefitsUnderPensionPlan  
Effect of curtailment on projected benefit obligation 4,039,000us-gaap_DefinedBenefitPlanEffectOfSettlementsAndCurtailmentsOnAccumulatedBenefitObligation  
Accumulated other comprehensive loss 2,666,000us-gaap_AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax  
Unrecognized actuarial loss 3,777,000us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax 4,588,000us-gaap_DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax
Unrecognized actuarial net of tax 1,946,000fcza_AccumulatedOtherComprehensiveIncomeLossUnrecognizedNetActuarialLossesTax 2,364,000fcza_AccumulatedOtherComprehensiveIncomeLossUnrecognizedNetActuarialLossesTax
Accumulated benefit obligation for defined benefit pension plan 16,953,000us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation 14,537,000us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation
Net periodic benefit cost over the next fiscal year 265,000us-gaap_DefinedBenefitPlanAmountToBeAmortizedFromAccumulatedOtherComprehensiveIncomeLossNextFiscalYear  
Rate of compensation increase used to determine the benefit obligation 0.00%us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease  
Long-term rate of return on plan assets 7.00%us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets 7.00%us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets
Employer contribution 1,515,000us-gaap_DefinedBenefitPlanContributionsByEmployer 4,900,000us-gaap_DefinedBenefitPlanContributionsByEmployer
Fund status (769,000)us-gaap_DefinedBenefitPlanFundedStatusOfPlan (2,990,000)us-gaap_DefinedBenefitPlanFundedStatusOfPlan
Total distribution to participant 1,471,000us-gaap_DefinedBenefitPlanBenefitsPaid 4,785,000us-gaap_DefinedBenefitPlanBenefitsPaid
Supplemental Retirement Plan [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Maximum retirement year for participants 10 years  
Liability recorded for supplemental retirement plan 1,498,000us-gaap_DeferredCompensationLiabilityCurrentAndNoncurrent
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember		 1,111,000us-gaap_DeferredCompensationLiabilityCurrentAndNoncurrent
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember
Expenses recorded for supplemental retirement plan 398,000us-gaap_DeferredCompensationArrangementWithIndividualCompensationExpense
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember		 412,000us-gaap_DeferredCompensationArrangementWithIndividualCompensationExpense
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember
Total distribution to participant $ 11,000us-gaap_DefinedBenefitPlanBenefitsPaid
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember		 $ 0us-gaap_DefinedBenefitPlanBenefitsPaid
/ us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis
= us-gaap_SupplementalEmployeeRetirementPlanDefinedBenefitMember