The cash outflow to acquire asset without physical form usually arising from contractual or other legal rights, excluding goodwill.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 13

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3213-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133

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

Subsequent Events (Details) - USD ($) $ in Thousands		12 Months Ended
Subsequent Events (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Sep. 25, 2015	Sep. 26, 2014	Sep. 27, 2013
Subsequent Event [Line Items]
Acquisition of patent portfolio		$ 37,416	$ 37,950	$ 4,050
Patents [Member] \| Subsequent Event [Member]
Subsequent Event [Line Items]
Acquisition of patent portfolio	$ 105,000