XML 19 R37.htm IDEA: XBRL DOCUMENT v2.4.1.9
LOANS AND ALLOWANCE FOR LOAN LOSSES (Schedule of Risk Category of Loans by Class of Loans) (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Loans and allowance for loan losses ("ALLL") [Line Items]    
Loans, net of unearned income and deferred fees $ 172,697us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome $ 175,088us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
Pass [Member]    
Loans and allowance for loan losses ("ALLL") [Line Items]    
Loans, net of unearned income and deferred fees 141,197us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember
142,585us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember
Special Mention [Member]    
Loans and allowance for loan losses ("ALLL") [Line Items]    
Loans, net of unearned income and deferred fees 12,036us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SpecialMentionMember
10,215us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SpecialMentionMember
Substandard [Member]    
Loans and allowance for loan losses ("ALLL") [Line Items]    
Loans, net of unearned income and deferred fees 19,464us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SubstandardMember
22,288us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SubstandardMember
Doubtful [Member]    
Loans and allowance for loan losses ("ALLL") [Line Items]    
Loans, net of unearned income and deferred fees      
Commercial [Member]    
Loans and allowance for loan losses ("ALLL") [Line Items]    
Loans, net of unearned income and deferred fees 6,702us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember
7,253us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember
Commercial [Member] | Pass [Member]    
Loans and allowance for loan losses ("ALLL") [Line Items]    
Loans, net of unearned income and deferred fees 763us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember
1,279us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember
Commercial [Member] | Special Mention [Member]    
Loans and allowance for loan losses ("ALLL") [Line Items]    
Loans, net of unearned income and deferred fees 3,144us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SpecialMentionMember
3,159us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SpecialMentionMember
Commercial [Member] | Substandard [Member]    
Loans and allowance for loan losses ("ALLL") [Line Items]    
Loans, net of unearned income and deferred fees 2,795us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SubstandardMember
2,815us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialPortfolioSegmentMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SubstandardMember
Commercial [Member] | Doubtful [Member]    
Loans and allowance for loan losses ("ALLL") [Line Items]    
Loans, net of unearned income and deferred fees      
Commercial Real Estate Construction [Member]    
Loans and allowance for loan losses ("ALLL") [Line Items]    
Loans, net of unearned income and deferred fees 7,487us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstateConstructionFinancingReceivableMember
2,557us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstateConstructionFinancingReceivableMember
Commercial Real Estate Construction [Member] | Pass [Member]    
Loans and allowance for loan losses ("ALLL") [Line Items]    
Loans, net of unearned income and deferred fees 7,136us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstateConstructionFinancingReceivableMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember
2,202us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstateConstructionFinancingReceivableMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember
Commercial Real Estate Construction [Member] | Special Mention [Member]    
Loans and allowance for loan losses ("ALLL") [Line Items]    
Loans, net of unearned income and deferred fees      
Commercial Real Estate Construction [Member] | Substandard [Member]    
Loans and allowance for loan losses ("ALLL") [Line Items]    
Loans, net of unearned income and deferred fees 351us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstateConstructionFinancingReceivableMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SubstandardMember
355us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstateConstructionFinancingReceivableMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SubstandardMember
Commercial Real Estate Construction [Member] | Doubtful [Member]    
Loans and allowance for loan losses ("ALLL") [Line Items]    
Loans, net of unearned income and deferred fees      
Commercial Real Estate Owner Occupied [Member]    
Loans and allowance for loan losses ("ALLL") [Line Items]    
Loans, net of unearned income and deferred fees 17,633us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= mfbp_CommercialRealEstateOwnerOccupiedReceivableMember
18,013us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= mfbp_CommercialRealEstateOwnerOccupiedReceivableMember
Commercial Real Estate Owner Occupied [Member] | Pass [Member]    
Loans and allowance for loan losses ("ALLL") [Line Items]    
Loans, net of unearned income and deferred fees 17,226us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= mfbp_CommercialRealEstateOwnerOccupiedReceivableMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember
17,596us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= mfbp_CommercialRealEstateOwnerOccupiedReceivableMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember
Commercial Real Estate Owner Occupied [Member] | Special Mention [Member]    
Loans and allowance for loan losses ("ALLL") [Line Items]    
Loans, net of unearned income and deferred fees 296us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= mfbp_CommercialRealEstateOwnerOccupiedReceivableMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SpecialMentionMember
306us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= mfbp_CommercialRealEstateOwnerOccupiedReceivableMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SpecialMentionMember
Commercial Real Estate Owner Occupied [Member] | Substandard [Member]    
Loans and allowance for loan losses ("ALLL") [Line Items]    
Loans, net of unearned income and deferred fees 111us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= mfbp_CommercialRealEstateOwnerOccupiedReceivableMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SubstandardMember
111us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= mfbp_CommercialRealEstateOwnerOccupiedReceivableMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SubstandardMember
Commercial Real Estate Owner Occupied [Member] | Doubtful [Member]    
Loans and allowance for loan losses ("ALLL") [Line Items]    
Loans, net of unearned income and deferred fees      
Commercial Real Estate Other [Member]    
Loans and allowance for loan losses ("ALLL") [Line Items]    
Loans, net of unearned income and deferred fees 15,425us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstateOtherReceivableMember
19,493us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstateOtherReceivableMember
Commercial Real Estate Other [Member] | Pass [Member]    
Loans and allowance for loan losses ("ALLL") [Line Items]    
Loans, net of unearned income and deferred fees 10,245us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstateOtherReceivableMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember
14,263us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstateOtherReceivableMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember
Commercial Real Estate Other [Member] | Special Mention [Member]    
Loans and allowance for loan losses ("ALLL") [Line Items]    
Loans, net of unearned income and deferred fees 444us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstateOtherReceivableMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SpecialMentionMember
457us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstateOtherReceivableMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SpecialMentionMember
Commercial Real Estate Other [Member] | Substandard [Member]    
Loans and allowance for loan losses ("ALLL") [Line Items]    
Loans, net of unearned income and deferred fees 4,736us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstateOtherReceivableMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SubstandardMember
4,773us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_CommercialRealEstateOtherReceivableMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SubstandardMember
Commercial Real Estate Other [Member] | Doubtful [Member]    
Loans and allowance for loan losses ("ALLL") [Line Items]    
Loans, net of unearned income and deferred fees      
Faith Based Non-Profit Construction [Member]    
Loans and allowance for loan losses ("ALLL") [Line Items]    
Loans, net of unearned income and deferred fees 1,932us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= mfbp_FaithBasedNonProfitConstructionMember
6,156us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= mfbp_FaithBasedNonProfitConstructionMember
Faith Based Non-Profit Construction [Member] | Pass [Member]    
Loans and allowance for loan losses ("ALLL") [Line Items]    
Loans, net of unearned income and deferred fees 1,932us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= mfbp_FaithBasedNonProfitConstructionMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember
6,156us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= mfbp_FaithBasedNonProfitConstructionMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember
Faith Based Non-Profit Construction [Member] | Special Mention [Member]    
Loans and allowance for loan losses ("ALLL") [Line Items]    
Loans, net of unearned income and deferred fees      
Faith Based Non-Profit Construction [Member] | Substandard [Member]    
Loans and allowance for loan losses ("ALLL") [Line Items]    
Loans, net of unearned income and deferred fees      
Faith Based Non-Profit Construction [Member] | Doubtful [Member]    
Loans and allowance for loan losses ("ALLL") [Line Items]    
Loans, net of unearned income and deferred fees      
Faith Based Non-Profit Owner Occupied [Member]    
Loans and allowance for loan losses ("ALLL") [Line Items]    
Loans, net of unearned income and deferred fees 88,998us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= mfbp_FaithBasedNonProfitOwnerOccupiedMember
84,499us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= mfbp_FaithBasedNonProfitOwnerOccupiedMember
Faith Based Non-Profit Owner Occupied [Member] | Pass [Member]    
Loans and allowance for loan losses ("ALLL") [Line Items]    
Loans, net of unearned income and deferred fees 73,808us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= mfbp_FaithBasedNonProfitOwnerOccupiedMember
/ us-gaap_InternalCreditAssessmentAxis
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68,963us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= mfbp_FaithBasedNonProfitOwnerOccupiedMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember
Faith Based Non-Profit Owner Occupied [Member] | Special Mention [Member]    
Loans and allowance for loan losses ("ALLL") [Line Items]    
Loans, net of unearned income and deferred fees 8,027us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= mfbp_FaithBasedNonProfitOwnerOccupiedMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SpecialMentionMember
6,160us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= mfbp_FaithBasedNonProfitOwnerOccupiedMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SpecialMentionMember
Faith Based Non-Profit Owner Occupied [Member] | Substandard [Member]    
Loans and allowance for loan losses ("ALLL") [Line Items]    
Loans, net of unearned income and deferred fees 7,163us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= mfbp_FaithBasedNonProfitOwnerOccupiedMember
/ us-gaap_InternalCreditAssessmentAxis
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9,376us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= mfbp_FaithBasedNonProfitOwnerOccupiedMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SubstandardMember
Faith Based Non-Profit Owner Occupied [Member] | Doubtful [Member]    
Loans and allowance for loan losses ("ALLL") [Line Items]    
Loans, net of unearned income and deferred fees      
Faith Based Non-Profit Other [Member]    
Loans and allowance for loan losses ("ALLL") [Line Items]    
Loans, net of unearned income and deferred fees 3,260us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= mfbp_FaithBasedNonProfitOtherMember
4,707us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= mfbp_FaithBasedNonProfitOtherMember
Faith Based Non-Profit Other [Member] | Pass [Member]    
Loans and allowance for loan losses ("ALLL") [Line Items]    
Loans, net of unearned income and deferred fees 3,260us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= mfbp_FaithBasedNonProfitOtherMember
/ us-gaap_InternalCreditAssessmentAxis
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4,707us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= mfbp_FaithBasedNonProfitOtherMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember
Faith Based Non-Profit Other [Member] | Special Mention [Member]    
Loans and allowance for loan losses ("ALLL") [Line Items]    
Loans, net of unearned income and deferred fees      
Faith Based Non-Profit Other [Member] | Substandard [Member]    
Loans and allowance for loan losses ("ALLL") [Line Items]    
Loans, net of unearned income and deferred fees      
Faith Based Non-Profit Other [Member] | Doubtful [Member]    
Loans and allowance for loan losses ("ALLL") [Line Items]    
Loans, net of unearned income and deferred fees      
Residential Real Estate First Mortgage [Member]    
Loans and allowance for loan losses ("ALLL") [Line Items]    
Loans, net of unearned income and deferred fees 18,359us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ResidentialRealEstateMember
18,995us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ResidentialRealEstateMember
Residential Real Estate First Mortgage [Member] | Pass [Member]    
Loans and allowance for loan losses ("ALLL") [Line Items]    
Loans, net of unearned income and deferred fees 14,247us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ResidentialRealEstateMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember
14,328us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ResidentialRealEstateMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember
Residential Real Estate First Mortgage [Member] | Special Mention [Member]    
Loans and allowance for loan losses ("ALLL") [Line Items]    
Loans, net of unearned income and deferred fees 81us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ResidentialRealEstateMember
/ us-gaap_InternalCreditAssessmentAxis
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88us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ResidentialRealEstateMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SpecialMentionMember
Residential Real Estate First Mortgage [Member] | Substandard [Member]    
Loans and allowance for loan losses ("ALLL") [Line Items]    
Loans, net of unearned income and deferred fees 4,031us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ResidentialRealEstateMember
/ us-gaap_InternalCreditAssessmentAxis
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4,579us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ResidentialRealEstateMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SubstandardMember
Residential Real Estate First Mortgage [Member] | Doubtful [Member]    
Loans and allowance for loan losses ("ALLL") [Line Items]    
Loans, net of unearned income and deferred fees      
Residential Real Estate Multifamily [Member]    
Loans and allowance for loan losses ("ALLL") [Line Items]    
Loans, net of unearned income and deferred fees 2,955us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= mfbp_ResidentialMultifamilyMember
3,001us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= mfbp_ResidentialMultifamilyMember
Residential Real Estate Multifamily [Member] | Pass [Member]    
Loans and allowance for loan losses ("ALLL") [Line Items]    
Loans, net of unearned income and deferred fees 2,864us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= mfbp_ResidentialMultifamilyMember
/ us-gaap_InternalCreditAssessmentAxis
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2,910us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= mfbp_ResidentialMultifamilyMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember
Residential Real Estate Multifamily [Member] | Special Mention [Member]    
Loans and allowance for loan losses ("ALLL") [Line Items]    
Loans, net of unearned income and deferred fees 31us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= mfbp_ResidentialMultifamilyMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SpecialMentionMember
31us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= mfbp_ResidentialMultifamilyMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SpecialMentionMember
Residential Real Estate Multifamily [Member] | Substandard [Member]    
Loans and allowance for loan losses ("ALLL") [Line Items]    
Loans, net of unearned income and deferred fees 60us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= mfbp_ResidentialMultifamilyMember
/ us-gaap_InternalCreditAssessmentAxis
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60us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= mfbp_ResidentialMultifamilyMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SubstandardMember
Residential Real Estate Multifamily [Member] | Doubtful [Member]    
Loans and allowance for loan losses ("ALLL") [Line Items]    
Loans, net of unearned income and deferred fees      
Residential Real Estate Home Equity [Member]    
Loans and allowance for loan losses ("ALLL") [Line Items]    
Loans, net of unearned income and deferred fees 4,011us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_HomeEquityMember
4,124us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_HomeEquityMember
Residential Real Estate Home Equity [Member] | Pass [Member]    
Loans and allowance for loan losses ("ALLL") [Line Items]    
Loans, net of unearned income and deferred fees 3,800us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_HomeEquityMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember
3,910us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_HomeEquityMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember
Residential Real Estate Home Equity [Member] | Special Mention [Member]    
Loans and allowance for loan losses ("ALLL") [Line Items]    
Loans, net of unearned income and deferred fees      
Residential Real Estate Home Equity [Member] | Substandard [Member]    
Loans and allowance for loan losses ("ALLL") [Line Items]    
Loans, net of unearned income and deferred fees 211us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_HomeEquityMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SubstandardMember
214us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_HomeEquityMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SubstandardMember
Residential Real Estate Home Equity [Member] | Doubtful [Member]    
Loans and allowance for loan losses ("ALLL") [Line Items]    
Loans, net of unearned income and deferred fees      
Residential Real Estate Construction [Member]    
Loans and allowance for loan losses ("ALLL") [Line Items]    
Loans, net of unearned income and deferred fees 122us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= mfbp_ResidentialConstructionMember
506us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= mfbp_ResidentialConstructionMember
Residential Real Estate Construction [Member] | Pass [Member]    
Loans and allowance for loan losses ("ALLL") [Line Items]    
Loans, net of unearned income and deferred fees 122us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= mfbp_ResidentialConstructionMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember
506us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= mfbp_ResidentialConstructionMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember
Residential Real Estate Construction [Member] | Special Mention [Member]    
Loans and allowance for loan losses ("ALLL") [Line Items]    
Loans, net of unearned income and deferred fees      
Residential Real Estate Construction [Member] | Substandard [Member]    
Loans and allowance for loan losses ("ALLL") [Line Items]    
Loans, net of unearned income and deferred fees      
Residential Real Estate Construction [Member] | Doubtful [Member]    
Loans and allowance for loan losses ("ALLL") [Line Items]    
Loans, net of unearned income and deferred fees      
Consumer [Member]    
Loans and allowance for loan losses ("ALLL") [Line Items]    
Loans, net of unearned income and deferred fees 1,259us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ConsumerLoanMember
1,232us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ConsumerLoanMember
Consumer [Member] | Pass [Member]    
Loans and allowance for loan losses ("ALLL") [Line Items]    
Loans, net of unearned income and deferred fees 1,240us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ConsumerLoanMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember
1,213us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ConsumerLoanMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember
Consumer [Member] | Special Mention [Member]    
Loans and allowance for loan losses ("ALLL") [Line Items]    
Loans, net of unearned income and deferred fees 13us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ConsumerLoanMember
/ us-gaap_InternalCreditAssessmentAxis
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14us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ConsumerLoanMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SpecialMentionMember
Consumer [Member] | Substandard [Member]    
Loans and allowance for loan losses ("ALLL") [Line Items]    
Loans, net of unearned income and deferred fees 6us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ConsumerLoanMember
/ us-gaap_InternalCreditAssessmentAxis
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5us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ConsumerLoanMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_SubstandardMember
Consumer [Member] | Doubtful [Member]    
Loans and allowance for loan losses ("ALLL") [Line Items]    
Loans, net of unearned income and deferred fees      
Other [Member]    
Loans and allowance for loan losses ("ALLL") [Line Items]    
Loans, net of unearned income and deferred fees 4,554us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_FinanceReceivablesMember
4,552us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_FinanceReceivablesMember
Other [Member] | Pass [Member]    
Loans and allowance for loan losses ("ALLL") [Line Items]    
Loans, net of unearned income and deferred fees 4,554us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_FinanceReceivablesMember
/ us-gaap_InternalCreditAssessmentAxis
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4,552us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_FinanceReceivablesMember
/ us-gaap_InternalCreditAssessmentAxis
= us-gaap_PassMember
Other [Member] | Special Mention [Member]    
Loans and allowance for loan losses ("ALLL") [Line Items]    
Loans, net of unearned income and deferred fees      
Other [Member] | Substandard [Member]    
Loans and allowance for loan losses ("ALLL") [Line Items]    
Loans, net of unearned income and deferred fees      
Other [Member] | Doubtful [Member]    
Loans and allowance for loan losses ("ALLL") [Line Items]    
Loans, net of unearned income and deferred fees