Organization and Basis of Presentation (Acquisitions) (Details) - USD ($) $ in Thousands	Aug. 17, 2018	May 02, 2018	Oct. 28, 2018	Jan. 28, 2018
Business Acquisition [Line Items]
Goodwill			$ 355,175	$ 341,897
Trackio International AG [Member]
Business Acquisition [Line Items]
Purchase price	$ 8,500
Goodwill	$ 8,500
IC Interconnect, Inc. [Member]
Business Acquisition [Line Items]
Cash paid to to acquire business		$ 7,300
Goodwill		4,800
Intangibles acquired		$ 2,500