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PORTFOLIO LOANS (Details 2) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Portfolio loans $ 461,214us-gaap_LoansAndLeasesReceivableGrossCarryingAmount $ 446,988us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
Performing Financing Receivable [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Portfolio loans 456,827us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_CreditRatingAMBestAxis
= us-gaap_PerformingFinancingReceivableMember
442,453us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_CreditRatingAMBestAxis
= us-gaap_PerformingFinancingReceivableMember
Nonperforming Financing Receivable [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Portfolio loans 4,387us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_CreditRatingAMBestAxis
= us-gaap_NonperformingFinancingReceivableMember
4,535us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
/ us-gaap_CreditRatingAMBestAxis
= us-gaap_NonperformingFinancingReceivableMember
Real Estate Loans [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Portfolio loans 315,004us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
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302,153us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
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Real Estate Loans [Member] | Performing Financing Receivable [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Portfolio loans 311,358us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
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298,691us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
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= us-gaap_PerformingFinancingReceivableMember
Real Estate Loans [Member] | Nonperforming Financing Receivable [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Portfolio loans 3,646us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
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= us-gaap_NonperformingFinancingReceivableMember
Real Estate Loans [Member] | One to Four Family [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Portfolio loans 250,211us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
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Real Estate Loans [Member] | One to Four Family [Member] | Performing Financing Receivable [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Portfolio loans 247,523us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
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Real Estate Loans [Member] | One to Four Family [Member] | Nonperforming Financing Receivable [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Portfolio loans 2,688us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
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2,850us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
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Real Estate Loans [Member] | Commercial Real Estate [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Portfolio loans 49,973us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
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50,322us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
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Real Estate Loans [Member] | Commercial Real Estate [Member] | Performing Financing Receivable [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Portfolio loans 49,472us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
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Real Estate Loans [Member] | Commercial Real Estate [Member] | Nonperforming Financing Receivable [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Portfolio loans 501us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
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Real Estate Loans [Member] | Other Land and Multi Family [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Portfolio loans 14,820us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
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14,680us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
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= acfc_OtherLandAndMultiFamilyMember
Real Estate Loans [Member] | Other Land and Multi Family [Member] | Performing Financing Receivable [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Portfolio loans 14,363us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
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14,569us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
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Real Estate Loans [Member] | Other Land and Multi Family [Member] | Nonperforming Financing Receivable [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Portfolio loans 457us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
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= acfc_OtherLandAndMultiFamilyMember
Real Estate Construction Loans [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Portfolio loans 9,579us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
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= acfc_RealEstateConstructionLoansMember
5,519us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
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= acfc_RealEstateConstructionLoansMember
Real Estate Construction Loans [Member] | Performing Financing Receivable [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Portfolio loans 9,579us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
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5,519us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
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Real Estate Construction Loans [Member] | Nonperforming Financing Receivable [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Portfolio loans 0us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
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Real Estate Construction Loans [Member] | One to Four Family [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Portfolio loans 4,971us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
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2,580us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
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Real Estate Construction Loans [Member] | One to Four Family [Member] | Performing Financing Receivable [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Portfolio loans 4,971us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
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2,580us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
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Real Estate Construction Loans [Member] | One to Four Family [Member] | Nonperforming Financing Receivable [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Portfolio loans 0us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
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Real Estate Construction Loans [Member] | Commercial Real Estate Construction Financing Receivable [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Portfolio loans 4,608us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
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2,939us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
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Real Estate Construction Loans [Member] | Commercial Real Estate Construction Financing Receivable [Member] | Performing Financing Receivable [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Portfolio loans 4,608us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
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2,939us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
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Real Estate Construction Loans [Member] | Commercial Real Estate Construction Financing Receivable [Member] | Nonperforming Financing Receivable [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Portfolio loans 0us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
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Real Estate Construction Loans [Member] | Acquisition and Development [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Portfolio loans 0us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
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Real Estate Construction Loans [Member] | Acquisition and Development [Member] | Performing Financing Receivable [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Portfolio loans 0us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
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Real Estate Construction Loans [Member] | Acquisition and Development [Member] | Nonperforming Financing Receivable [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Portfolio loans 0us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
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Other Portfolio Loans [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Portfolio loans 136,631us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
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139,316us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
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Other Portfolio Loans [Member] | Performing Financing Receivable [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Portfolio loans 135,890us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
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Other Portfolio Loans [Member] | Nonperforming Financing Receivable [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Portfolio loans 741us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
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Other Portfolio Loans [Member] | Home Equity Line of Credit [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Portfolio loans 45,076us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
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Other Portfolio Loans [Member] | Home Equity Line of Credit [Member] | Performing Financing Receivable [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Portfolio loans 44,998us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
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Other Portfolio Loans [Member] | Home Equity Line of Credit [Member] | Nonperforming Financing Receivable [Member]    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Portfolio loans 78us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
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Accounts, Notes, Loans and Financing Receivable [Line Items]    
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