Consolidated Statements Of Cash Flows Supplemental Disclosures - USD ($) $ in Thousands	6 Months Ended
	Jul. 02, 2017	Jul. 03, 2016
Statement of Cash Flows [Abstract]
Interest paid on long-term debt	$ 9,198	$ 8,608
Interest paid on lease financing obligations	66	52
Accruals for capital expenditures	1,992	4,453
Income taxes refunded (paid)	0	0
Capital lease obligations acquired or incurred	$ 277	$ 263