Acquisitions Asset Acquisitions (Details) (Distribution And License Agreements [Member], USD $) In Millions, unless otherwise specified	12 Months Ended	3 Months Ended
Jun. 25, 2011	Mar. 26, 2011 AgaMatrix [Member]
Research and Development Assets Acquired Other than Through Business Combination [Line Items]
Acquired intangible assets	$ 10.8
Payments to Acquire Intangible Assets		$ 5.0

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

-Glossary Investing Activities

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

Reference 2: 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=31042434&loc=d3e3213-108585

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