Income Taxes Effective Rate Reconciliation (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 30, 2012	Jan. 01, 2012	Jan. 02, 2011
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract]
Statutory federal income tax provision (benefit)	$ (10,118)	$ (765)	$ 916
State income taxes (benefit), net of federal provision (benefit)	(688)	46	276
Stock-based compensation expense	(657)	336	356
Change in valuation allowance	2,063	0	0
Non-deductible expenses	14	242	35
Employment tax credits	(353)	(1,148)	(1,060)
Miscellaneous	(354)	(372)	284
Provision (benefit) for income taxes from continuing operations	$ (10,093)	$ (1,661)	$ 807