Income Taxes Effective Rate Reconciliation (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 29, 2013	Dec. 30, 2012	Jan. 01, 2012
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Statutory federal income tax provision (benefit)	$ (8,371)	$ (10,118)	$ (765)
State income taxes (benefit), net of federal provision (benefit)	(656)	(688)	46
Stock-based compensation expense	0	(657)	336
Change in valuation allowance	624	2,063	0
Non-deductible expenses	19	14	242
Employment tax credits	(2,298)	(353)	(1,148)
Miscellaneous	285	(354)	(372)
Provision (benefit) for income taxes	$ (10,397)	$ (10,093)	$ (1,661)