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Supplemental Disclosure of Cash Flow Information (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 30, 2016
Jan. 01, 2016
Jan. 02, 2015
Non-cash investing and financing activities:      
Assets obtained by capital lease $ 2,383 $ 91 $ 802
Purchase of property and equipment included in accounts payable $ 485 $ 51 $ 682