Summary of Significant Accounting Policies Sabbatical Leave (Details) (USD $)	Jan. 03, 2015	Dec. 28, 2013
Compensated Absences Liability, Sabbatical Leave	$ 1,300,000	$ 1,000,000
Minimum [Member]
Compensated Absences Liability, Sabbatical Leave	$ 5

Amount of liability accrued for the employer's obligation related to an employee's right to receive compensation during a future sabbatical leave. This amount does not include amounts accrued for the employee's future vacation and holidays.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 710

-SubTopic 10

-Section 25

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6409733&loc=d3e19366-108361

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Sabbatical Leave

-URI http://asc.fasb.org/extlink&oid=6524516

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 710

-SubTopic 10

-Section 25

-Paragraph 5

-URI http://asc.fasb.org/extlink&oid=6409733&loc=d3e19437-108361

Name:	us-gaap_CompensatedAbsencesLiabilitySabbaticalLeave
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant