Provision for Taxes (Details 2) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 29, 2012	Dec. 31, 2011	Dec. 25, 2010
Balance, beginning of year	$ 46	$ 220
Additions for current year tax positions	0	0
Additions for prior year tax positions	0	0
Settlements	0	0	(135)
Reductions settlements	0	0
Reductions for prior year tax positions	(46)	(174)
Balance, end of year	$ 0	$ 46	$ 220