Commitments and contingencies (Litigation settlement Textuals 2) (Details) $ in Thousands	12 Months Ended
Jun. 28, 2014 USD ($)
Award payment
Gain on legal settlement	$ 22,102
LCD Class Action Settlement
Award payment
Gain on legal settlement	$ 22,100

Amount of gain (loss) recognized in settlement of litigation and insurance claims. Excludes claims within an insurance entity's normal claims settlement process.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349

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