Summary of Significant Accounting Policies Accounts Receivable (Details) - USD ($) $ in Thousands		12 Months Ended
		Jan. 02, 2016	Jan. 03, 2015	Dec. 28, 2013
Accounting Policies [Abstract]
Allowance for Doubtful Accounts Receivable, Period Start		$ (247)	$ (243)	$ 277
Additions for Doubtful Accounts	[1]	(174)	(307)	(325)
Allowance for Doubtful Accounts Receivable, Write-offs	[2]	156	303	359
Allowance for Doubtful Accounts Receivable, Period End		$ (265)	$ (247)	$ (243)

[1] Allowance for doubtful accounts are charged to expenses.

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