Consolidated Statements Of Cash Flows Supplemental Disclosures - USD ($) $ in Thousands	3 Months Ended
	Apr. 03, 2016	Mar. 29, 2015
Statement of Cash Flows [Abstract]
Interest paid on long-term debt	$ 312	$ 234
Interest paid on lease financing obligations	26	26
Accruals for capital expenditures	2,387	2,689
Income taxes refunded	0	2,416
Capital lease obligations acquired or incurred	$ 263	$ 0