Business Acquisitions (Schedule of Purchased Intangible Assets) (Details) (Supertex Inc., USD $) In Thousands, unless otherwise specified	0 Months Ended
	Apr. 01, 2014
Business Acquisition [Line Items]
Purchased Intangible Assets	$ 89,600
Core/developed technology
Business Acquisition [Line Items]
Useful Life	10 years
Purchased Intangible Assets	68,900
In-process technology
Business Acquisition [Line Items]
Useful Life	10 years
Purchased Intangible Assets	1,900
Customer-related
Business Acquisition [Line Items]
Useful Life	2 years
Purchased Intangible Assets	17,700
Backlog
Business Acquisition [Line Items]
Useful Life	1 year
Purchased Intangible Assets	$ 1,100