Accrued Expenses and Other Current Liabilities (Details) - Schedule of accrued expenses and other current liabilities - USD ($) $ in Thousands	Jul. 31, 2015	Jan. 31, 2015
Schedule of accrued expenses and other current liabilities [Abstract]
Accrued utility charges	$ 1,968	$ 3,085
Accrued payroll and related items	2,740	3,798
Accrued real estate taxes	1,959	2,507
Other	1,556	957
Total	$ 8,223	$ 10,347