Supplemental Disclosures to Consolidated Statements of Cash Flows (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Jan. 01, 2013	Jan. 03, 2012
Supplemental Cash Flow Elements [Abstract]
Interest paid (net of amounts capitalized)	$ 2,506	$ 4,400	$ 5,177
Income taxes paid (net of refunds)	137	509	43
Purchases of property and equipment accrued in accounts payable	$ 996	$ 2,648	$ 1,170