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LOANS AND ALLOWANCE FOR LOAN LOSSES (Schedule of Details of TDR Loans that were Restructured and Loans Modified as TDRs) (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 12 Months Ended
Mar. 31, 2015
item
Mar. 31, 2014
Mar. 31, 2015
item
Mar. 31, 2014
Below Market Interest Rate        
Number of loans, TDRs 2mfbp_FinancingReceivableModificationsNumberOfContracts1BelowMarket    2mfbp_FinancingReceivableModificationsNumberOfContracts1BelowMarket  
Pre-modification Outstanding Recorded Investment $ 129mfbp_FinancingReceivableModificationsPreModificationRecordedInvestment1BelowMarketInterestRate   $ 129mfbp_FinancingReceivableModificationsPreModificationRecordedInvestment1BelowMarketInterestRate $ 3,100mfbp_FinancingReceivableModificationsPreModificationRecordedInvestment1BelowMarketInterestRate
Post-modification Outstanding Recorded Investment 125mfbp_FinancingReceivableModificationsPostModificationRecordedInvestment1BelowMarketInterestRate      
Residential Real Estate First Mortgage [Member]        
Below Market Interest Rate        
Number of loans, TDRs 2mfbp_FinancingReceivableModificationsNumberOfContracts1BelowMarket
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ResidentialRealEstateMember		      
Pre-modification Outstanding Recorded Investment 129mfbp_FinancingReceivableModificationsPreModificationRecordedInvestment1BelowMarketInterestRate
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ResidentialRealEstateMember		      
Post-modification Outstanding Recorded Investment $ 125mfbp_FinancingReceivableModificationsPostModificationRecordedInvestment1BelowMarketInterestRate
/ us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis
= us-gaap_ResidentialRealEstateMember