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Supplemental Disclosure of Cash Flow Information (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Jan. 03, 2014
Dec. 28, 2012
Dec. 30, 2011
Non-cash investing and financing activities:      
Assets obtained by capital lease $ 0 $ 527 $ 331
Purchase of property and equipment included in accounts payable $ 881 $ 0 $ 0