Manufacturing Consolidation Project and Tax Strategy (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 29, 2013
Liability at December 28, 2012	$ 797
Costs incurred and charged to expense	901
Cash payments	(258)
Liability at March 29, 2013	1,440
Total costs incurred to date	4,597
Total costs expected to be incurred	6,000
Termination Benefits [Member]
Liability at December 28, 2012	504
Costs incurred and charged to expense	113
Cash payments	0
Liability at March 29, 2013	617
Total costs incurred to date	1,013
Total costs expected to be incurred	1,410
Other Associated Costs [Member]
Liability at December 28, 2012	293
Costs incurred and charged to expense	788
Cash payments	(258)
Liability at March 29, 2013	823
Total costs incurred to date	3,584
Total costs expected to be incurred	$ 4,590