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FAIR VALUE (Details 2) (USD $)
3 Months Ended 12 Months Ended
Mar. 31, 2015
Dec. 31, 2014
Fair Value, Option, Quantitative Disclosures [Line Items]    
Transfers of Financial Assets Accounted for as Sale, Valuation Techniques Broker price opinions, appraisal of collateral [1],[2] Broker price opinions, appraisal of collateral [1],[2]
Appraisal Adjustments [Member]    
Fair Value, Option, Quantitative Disclosures [Line Items]    
Financial Assets Accounted for as Sale, Valuation Techniques, Unobservable Input Appraisal adjustments [3] Appraisal adjustments [3]
Appraisal Adjustments [Member] | Weighted Average [Member]    
Fair Value, Option, Quantitative Disclosures [Line Items]    
Fair Value Assumptions, Expected Volatility Rate 4.60%us-gaap_FairValueAssumptionsExpectedVolatilityRate
/ acfc_ImpairedLoansCollateralDependentAxis
= acfc_AppraisalAdjustmentsMember
/ us-gaap_RangeAxis
= us-gaap_WeightedAverageMember
[4] 4.40%us-gaap_FairValueAssumptionsExpectedVolatilityRate
/ acfc_ImpairedLoansCollateralDependentAxis
= acfc_AppraisalAdjustmentsMember
/ us-gaap_RangeAxis
= us-gaap_WeightedAverageMember
[4]
Appraisal Adjustments [Member] | Minimum [Member]    
Fair Value, Option, Quantitative Disclosures [Line Items]    
Fair Value Assumptions, Expected Volatility Rate 0.00%us-gaap_FairValueAssumptionsExpectedVolatilityRate
/ acfc_ImpairedLoansCollateralDependentAxis
= acfc_AppraisalAdjustmentsMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
[4] 0.00%us-gaap_FairValueAssumptionsExpectedVolatilityRate
/ acfc_ImpairedLoansCollateralDependentAxis
= acfc_AppraisalAdjustmentsMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
[4]
Appraisal Adjustments [Member] | Maximum [Member]    
Fair Value, Option, Quantitative Disclosures [Line Items]    
Fair Value Assumptions, Expected Volatility Rate 38.80%us-gaap_FairValueAssumptionsExpectedVolatilityRate
/ acfc_ImpairedLoansCollateralDependentAxis
= acfc_AppraisalAdjustmentsMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
[4] 38.80%us-gaap_FairValueAssumptionsExpectedVolatilityRate
/ acfc_ImpairedLoansCollateralDependentAxis
= acfc_AppraisalAdjustmentsMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
[4]
Liquidation Expenses [Member]    
Fair Value, Option, Quantitative Disclosures [Line Items]    
Financial Assets Accounted for as Sale, Valuation Techniques, Unobservable Input Liquidation expenses Liquidation expenses
Fair Value Assumptions, Expected Volatility Rate 10.00%us-gaap_FairValueAssumptionsExpectedVolatilityRate
/ acfc_ImpairedLoansCollateralDependentAxis
= acfc_LiquidationExpensesMember
[4] 10.00%us-gaap_FairValueAssumptionsExpectedVolatilityRate
/ acfc_ImpairedLoansCollateralDependentAxis
= acfc_LiquidationExpensesMember
[4]
Liquidation Expenses [Member] | Weighted Average [Member]    
Fair Value, Option, Quantitative Disclosures [Line Items]    
Fair Value Assumptions, Expected Volatility Rate 10.00%us-gaap_FairValueAssumptionsExpectedVolatilityRate
/ acfc_ImpairedLoansCollateralDependentAxis
= acfc_LiquidationExpensesMember
/ us-gaap_RangeAxis
= us-gaap_WeightedAverageMember
[4] 10.00%us-gaap_FairValueAssumptionsExpectedVolatilityRate
/ acfc_ImpairedLoansCollateralDependentAxis
= acfc_LiquidationExpensesMember
/ us-gaap_RangeAxis
= us-gaap_WeightedAverageMember
[4]
Fair Value, Inputs, Level 3 [Member] | Other Real Estate Owned [Member]    
Fair Value, Option, Quantitative Disclosures [Line Items]    
Assets, Fair Value Estimate 4,248us-gaap_AssetsFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_FinancialInstrumentAxis
= acfc_OtherRealEstateOwnedMember
3,908us-gaap_AssetsFairValueDisclosure
/ us-gaap_FairValueByFairValueHierarchyLevelAxis
= us-gaap_FairValueInputsLevel3Member
/ us-gaap_FinancialInstrumentAxis
= acfc_OtherRealEstateOwnedMember
[1] Fair value is generally determined through independent appraisals of the underlying collateral, which generally include various level 3 inputs which are not identifiable.
[2] Includes qualitative adjustments by management and estimated liquidation expenses
[3] Appraisals may be adjusted by management for qualitative factors such as economic conditions.
[4] The range and weighted average of other appraisal adjustments and liquidation expenses are presented as a percent of the appraised value.