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DEBT Mexico Revolving Credit Facility (Details) - Line Of Credit Mexico Facility [Member]
MXN in Millions, $ in Millions
12 Months Ended
Jan. 31, 2016
USD ($)
Jan. 31, 2016
MXN
Line of Credit Facility [Line Items]    
Line of Credit Facility, Maximum Borrowing Capacity $ 8.8 MXN 161.1
Debt Instrument, Basis Spread on Variable Rate 0.90%  
Line of credit facility, amount outstanding $ 8.8  
Short-term Debt, Weighted Average Interest Rate 4.51% 4.51%