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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
Jul. 31, 2014
Jan. 31, 2014
Schedule of accrued expenses and other current liabilities [Abstract]    
Accrued utility charges $ 1,655 $ 3,745
Accrued income taxes 3,656  
Accrued payroll and related items 3,453 3,122
Accrued real estate taxes 1,939 2,471
Other 1,769 2,809
Total $ 12,472 $ 12,147