Legal Matters (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Mar. 28, 2015 defendant	Mar. 29, 2014 item defendant
Legal Matters [Abstract]
Number of U.S.Ethernet Innovations lawsuit co-defendants		2
Patents allegedly infringed number	2crus_PatentsAllegedlyInfringedNumber	4crus_PatentsAllegedlyInfringedNumber
Patent infringement settlements, net		$ (695)us-gaap_LitigationSettlementAmount

Amount of judgment or settlement awarded to (against) the entity in respect of litigation.

No definition available.

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