Accrued Expenses and Other Current Liabilities (Details) - Schedule of accrued expenses and other current liabilities (USD $) In Thousands, unless otherwise specified	Apr. 30, 2014	Jan. 31, 2014
Schedule of accrued expenses and other current liabilities [Abstract]
Accrued utility charges	$ 2,242	$ 3,745
Accrued payroll and related items	2,975	3,122
Accrued real estate taxes	2,593	2,471
Other	2,003	2,809
Total	$ 9,813	$ 12,147

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 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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