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Organization and Basis of Presentation (Acquisitions) (Details) - USD ($)
$ in Thousands
May 02, 2018
Jul. 29, 2018
Jan. 28, 2018
Business Acquisition [Line Items]      
Goodwill   $ 346,731 $ 341,897
IC Interconnect, Inc. [Member]      
Business Acquisition [Line Items]      
Cash paid to to acquire business $ 7,300    
Goodwill 4,800    
Intangibles acquired $ 2,500