Business Acquisitions (Schedule of Purchased Intangible Assets) (Details) - USD ($) $ in Thousands	Jul. 17, 2014	Apr. 01, 2014
ISSC Technologies Corporation [Member]
Business Acquisition [Line Items]
Purchased Intangible Assets	$ 147,800
ISSC Technologies Corporation [Member] | Core/developed technology
Business Acquisition [Line Items]
Useful Life	10 years
Purchased Intangible Assets	$ 68,900
ISSC Technologies Corporation [Member] | In-process technology
Business Acquisition [Line Items]
Useful Life	10 years
Purchased Intangible Assets	$ 27,200
ISSC Technologies Corporation [Member] | Customer-related
Business Acquisition [Line Items]
Useful Life	3 years
Purchased Intangible Assets	$ 51,100
ISSC Technologies Corporation [Member] | Backlog
Business Acquisition [Line Items]
Useful Life	1 year
Purchased Intangible Assets	$ 600
Supertex Inc.
Business Acquisition [Line Items]
Purchased Intangible Assets		$ 89,600
Supertex Inc. | Core/developed technology
Business Acquisition [Line Items]
Useful Life		10 years
Purchased Intangible Assets		$ 68,900
Supertex Inc. | In-process technology
Business Acquisition [Line Items]
Useful Life		10 years
Purchased Intangible Assets		$ 1,900
Supertex Inc. | Customer-related
Business Acquisition [Line Items]
Useful Life		2 years
Purchased Intangible Assets		$ 17,700
Supertex Inc. | Backlog
Business Acquisition [Line Items]
Useful Life		1 year
Purchased Intangible Assets		$ 1,100