Commitments and Contingencies (Details) (Freedom Medical, Inc. lawsuit)	0 Months Ended
Sep. 20, 2012 item	Dec. 30, 2011 item
Freedom Medical, Inc. lawsuit
Commitments and Contingencies
Number of insurance companies filing complaints		2
Number of actions in which parties settled all the asserted claims	3

The number of claims settled and dismissed during the period.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 5

-Paragraph 9, 10, 11, 12

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Name:	us-gaap_LossContingencyClaimsSettledAndDismissedNumber
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration