Commitments and Contingencies Commitments and Contingencies (Details Textual) (USD $)	12 Months Ended
Dec. 28, 2013	Dec. 29, 2012	Dec. 31, 2011	Jan. 01, 2011
Restructuring Cost and Reserve [Line Items]
Outstanding liability for restructuring plans	$ 14,224,000	$ 4,343,000	$ 5,027,000	$ 15,071,000
Purchase Obligation	78,200,000
General Period of Warranty on Sales of Hardware Products	90 days
Facility Closing [Member]
Restructuring Cost and Reserve [Line Items]
Outstanding liability for restructuring plans	$ 3,552,000	$ 4,343,000	$ 4,976,000	$ 5,868,000

Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 420

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SAB TOPIC 5.P.4(b))

-URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747

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

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 5

-Section P

-Subsection 3, 4

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