Income Taxes Components of Income Tax Expense (Benefit) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 29, 2012	Dec. 31, 2011	Dec. 25, 2010
Current
Federal	$ 154	$ 725	$ (98)
State	88	213	(8)
Total current	242	938	(106)
Deferred
Federal	(592)	(234)	(2,301)
State	(51)	(20)	(197)
Total deferred	(643)	(254)	(2,498)
Income tax provision (benefit)	$ (401)	$ 684	$ (2,604)