Supplemental Disclosures to Consolidated Statements of Cash Flows (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 29, 2015	Dec. 30, 2014	Dec. 31, 2013
Supplemental Cash Flow Elements [Abstract]
Interest paid (net of amounts capitalized)	$ 839	$ 0	$ 2,506
Income taxes paid (net of refunds)	354	811	137
Purchases of property and equipment accrued in accounts payable	$ 1,414	$ 37	$ 996