Manufacturing Consolidation Project and Tax Strategy (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 28, 2013
Schedule Of Restructuring Reserve By Type Of Cost [Line Items]
Liability at December 28, 2012	$ 797
Costs incurred and charged to expense	1,514
Cash payments	(1,641)
Liability at June 28, 2013	670
Total costs incurred to date	5,210
Total costs expected to be incurred	6,200
Termination Benefits [Member]
Schedule Of Restructuring Reserve By Type Of Cost [Line Items]
Liability at December 28, 2012	504
Costs incurred and charged to expense	207
Cash payments	(94)
Liability at June 28, 2013	617
Total costs incurred to date	1,107
Total costs expected to be incurred	1,400
Other Associated Costs [Member]
Schedule Of Restructuring Reserve By Type Of Cost [Line Items]
Liability at December 28, 2012	293
Costs incurred and charged to expense	1,307
Cash payments	(1,547)
Liability at June 28, 2013	53
Total costs incurred to date	4,103
Total costs expected to be incurred	$ 4,800