Supplemental Disclosures to Condensed Consolidated Statements of Cash Flows (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 28, 2016	Jun. 30, 2015
Supplemental Cash Flow Elements [Abstract]
Interest paid (net of amounts capitalized)	$ 860,000	$ 571
Income taxes (refunded) paid	(42,000)	376
Changes in purchases of property and equipment accrued in accounts payable, net	$ 873,000	$ 827