ACCRUED EXPENSES AND OTHER CURRENT LIABILITIES (Details) - Schedule of accrued expenses and other current liabilities (USD $) In Thousands, unless otherwise specified	Jan. 31, 2015	Jan. 31, 2014
Schedule of accrued expenses and other current liabilities [Abstract]
Accrued utility charges	$ 3,085us-gaap_AccruedUtilitiesCurrent	$ 3,745us-gaap_AccruedUtilitiesCurrent
Accrued income taxes		615us-gaap_AccruedIncomeTaxes
Accrued payroll and related items	3,798	3,122
Accrued real estate taxes	2,507	2,471
Other	957us-gaap_OtherAccruedLiabilitiesCurrent	2,194us-gaap_OtherAccruedLiabilitiesCurrent
Total	$ 10,347us-gaap_OtherLiabilitiesCurrent	$ 12,147us-gaap_OtherLiabilitiesCurrent

Carrying value as of the balance sheet date of obligations incurred and payable for real and property taxes. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Carrying amount as of the balance sheet date of the unpaid sum of the known and estimated amounts payable to satisfy all domestic and foreign income tax obligations due. This amount is the total of current and noncurrent accrued income taxes.

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- Definition

Carrying value as of the balance sheet date of obligations incurred through that date and payable for utilities, such as electrical power, heating oil, natural gas, and water. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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- Definition

Carrying value as of the balance sheet date of obligations incurred through that date and payable arising from transactions not otherwise specified in the taxonomy. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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- Definition

Aggregate carrying amount of current liabilities (due within one year or within the normal operating cycle if longer) not separately disclosed in the balance sheet. Includes costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered and of liabilities not separately disclosed.

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