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Net Sales (Narrative) (Details) - Sales Revenue, Net [Member] - Maximum [Member]
3 Months Ended 9 Months Ended
Oct. 28, 2018
Oct. 28, 2018
Geographic Concentration Risk [Member] | Outside the U.S. [Member]    
Revenue, Major Customer [Line Items]    
Concentration Risk, Percentage 10.00% 10.00%
Customer Concentration Risk [Member]    
Revenue, Major Customer [Line Items]    
Concentration Risk, Percentage 10.00% 10.00%