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Property and Equipment - Narrative (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2017
Jan. 01, 2017
Jan. 03, 2016
Property, Plant and Equipment [Line Items]      
Accumulated depreciation of capital leases $ 4,000 $ 2,900  
Depreciation and amortization 109,771 119,569 $ 119,294
Asset Impairment 1,843 $ 1,550 $ 875
Property and equipment, net $ 1,900