Summary of Significant Accounting Policies Accounts Receivable (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 28, 2013		Dec. 29, 2012		Dec. 31, 2011		Jan. 01, 2011
Accounting Policies [Abstract]
Allowance for Doubtful Accounts Receivable, Write-offs	$ 359	[1]	$ 812	[1]	$ 817	[1]
Allowance for Doubtful Accounts Receivable, Current	(243)		(277)		301		431
Additions for Doubtful Accounts	$ (325)	[2]	$ (788)	[2]	$ (687)	[2]

[1] Represents uncollectible accounts written off against the allowance for doubtful accounts.

[2] Allowance for Doubtful accounts are charged to expenses.