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Accrued Expenses and Other Current Liabilities (Details) - Schedule of accrued expenses and other current liabilities (USD $)
In Thousands, unless otherwise specified
Apr. 30, 2015
Jan. 31, 2015
Schedule of accrued expenses and other current liabilities [Abstract]    
Accrued utility charges $ 2,296us-gaap_AccruedUtilitiesCurrent $ 3,085us-gaap_AccruedUtilitiesCurrent
Accrued payroll and related items 847us-gaap_EmployeeRelatedLiabilitiesCurrent 3,798us-gaap_EmployeeRelatedLiabilitiesCurrent
Accrued real estate taxes 2,631us-gaap_AccrualForTaxesOtherThanIncomeTaxesCurrent 2,507us-gaap_AccrualForTaxesOtherThanIncomeTaxesCurrent
Other 972us-gaap_OtherAccruedLiabilitiesCurrent 957us-gaap_OtherAccruedLiabilitiesCurrent
Total $ 6,746us-gaap_OtherLiabilitiesCurrent $ 10,347us-gaap_OtherLiabilitiesCurrent