Legal Matters (Details) $ in Thousands	12 Months Ended
Mar. 26, 2016 item	Mar. 26, 2016 defendant	Mar. 26, 2016 USD ($)	Mar. 29, 2014 USD ($)
Legal Matters [Abstract]
Number of U.S.Ethernet Innovations lawsuit co-defendants \| defendant		2
Patents allegedly infringed number	4	2
Licenses Revenue \| $			$ 11,670	$ (695)

Revenue earned during the period relating to consideration received from another party for the right to use, but not own, certain of the entity's intangible assets. Licensing arrangements include, but are not limited to, rights to use a patent, copyright, technology, manufacturing process, software or trademark. Licensing fees are generally, but not always, fixed as to amount and not dependent upon the revenue generated by the licensing party. An entity may receive licensing fees for licenses that also generate royalty payments to the entity.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1(e))
-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

Name:	us-gaap_LicensesRevenue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration