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v2.4.1.9

Investment in joint venture (Details) (USD $) | 3 Months Ended |
--- | --- | ---
Apr. 30, 2015 | Apr. 30, 2014 | Jan. 31, 2015
Schedule of Equity Method Investments [Line Items] |  |  |
date of investment in joint venture | Oct. 18, 2009 |  |
initial investment in joint venture | $ 5,900,000mfri_Initialinvestmentinjointventure |  |
Payments to acquire interest in joint venture | 2,000,000us-gaap_PaymentsToAcquireInterestInJointVenture |  |
Ownership percentage of joint venture | 49.00%us-gaap_EquityMethodInvestmentOwnershipPercentage |  |
Payments for advance to affiliate | 3,900,000us-gaap_PaymentsForAdvanceToAffiliate |  |
Income (loss) from joint venture | 165,000us-gaap_IncomeLossFromEquityMethodInvestments | (8,000)us-gaap_IncomeLossFromEquityMethodInvestments |
Equity Method Investment, Summarized Financial Information, Current Assets | 9,588,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationCurrentAssets |  | 13,820,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationCurrentAssets
Equity Method Investment, Summarized Financial Information, Noncurrent Assets | 12,217,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationNoncurrentAssets |  | 14,023,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationNoncurrentAssets
Equity Method Investment, Summarized Financial Information, Current Liabilities | 2,529,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationCurrentLiabilities |  | 4,499,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationCurrentLiabilities
Equity Method Investment, Summarized Financial Information, Noncurrent Liabilities | 6,825,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationNoncurrentLiabilities |  | 9,013,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationNoncurrentLiabilities
Equity Method Investment Summarized Financial Information, Equity | 12,451,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationEquity |  | 14,331,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationEquity
Equity Method Investment, Summarized Financial Information, Revenue | 6,267,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationRevenue | 8,937,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationRevenue |
Equity Method Investment, Summarized Financial Information, Gross Profit | 1,167,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationGrossProfitLoss | 725,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationGrossProfitLoss |
Equity Method Investment, Summarized Financial Information, Income from continuing operations | 685,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationIncomeLossFromContinuingOperationsBeforeExtraordinaryItems | 213,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationIncomeLossFromContinuingOperationsBeforeExtraordinaryItems |
Equity Method Investment, Summarized Financial Information, Net income (loss) | $ 337,000us-gaap_EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss | $ (16,000)us-gaap_EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss |

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