Restructuring and Other Transition Costs (Details) (USD $) In Thousands	6 Months Ended
	Jun. 18, 2011	Jan. 01, 2011
Liability established by Company in connection with restructuring plan by category of costs
Beginning Balance	$ 1,314	$ 3,340
Amounts paid or utilized	(673)	(2,026)
Ending Balance	641	1,314
Severance and employee related [Member]
Liability established by Company in connection with restructuring plan by category of costs
Beginning Balance	287	1,324
Amounts paid or utilized	287	(1,037)
Ending Balance	0	287
Facility exit costs and other restructuring [Member]
Liability established by Company in connection with restructuring plan by category of costs
Beginning Balance	1,027	2,016
Amounts paid or utilized	(386)	(989)
Ending Balance	$ 641	$ 1,027