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Debt Term Loans (Details) (USD $)
 12 Months Ended
Jan. 31, 2015
Jan. 31, 2014
1.360 Euro loan [Member]    
Debt Instrument, Issuance Date Dec. 10, 2012  
Face value of debt in local currency 1.4 million Euros  
Debt Instrument, Face Amount $ 1,800,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= mfri_A1360EuroLoanMember		  
Debt Instrument, Periodic Payment 108,000us-gaap_DebtInstrumentPeriodicPayment
/ us-gaap_DebtInstrumentAxis
= mfri_A1360EuroLoanMember		  
Debt Instrument, Maturity Date Dec. 31, 2017  
Debt Instrument, Interest Rate at Period End 3.70%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= mfri_A1360EuroLoanMember		  
Dirhams Vehicle loan [Member]    
Face value of debt in local currency 1.0 million Dirhams  
Debt Instrument, Face Amount 284,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= mfri_DirhamsVehicleloanMember		  
Debt Instrument, Periodic Payment 12,000us-gaap_DebtInstrumentPeriodicPayment
/ us-gaap_DebtInstrumentAxis
= mfri_DirhamsVehicleloanMember		  
Debt Instrument, Maturity Date Range, Start Nov. 01, 2015  
Debt Instrument, Maturity Date Range, End Nov. 30, 2016  
Debt Instrument, Interest Rate at Period End 3.40%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= mfri_DirhamsVehicleloanMember		  
Saudi term loan [Member]    
Debt Instrument, Issuance Date Apr. 10, 2012  
Face value of debt in local currency 22.2 million Dirhams  
Debt Instrument, Face Amount   5,900,000us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= mfri_SaudiTermLoanMember
Debt Instrument, Periodic Payment $ 408,000us-gaap_DebtInstrumentPeriodicPayment
/ us-gaap_DebtInstrumentAxis
= mfri_SaudiTermLoanMember		  
Debt Instrument, Maturity Date Apr. 01, 2016  
Debt Instrument, Interest Rate at Period End 5.50%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= mfri_SaudiTermLoanMember