Annual report pursuant to Section 13 and 15(d)

Fixed Assets (Details)

v3.8.0.1
Fixed Assets (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 28, 2017
Dec. 29, 2016
Dec. 31, 2015
Property, Plant and Equipment [Line Items]      
Fixed assets, at cost $ 325,658 $ 220,712  
Less: accumulated depreciation and amortization 104,706 70,241  
Fixed assets, net 220,952 150,471  
Depreciation and amortization 36,255 27,459 $ 18,531
Furniture, fixtures and equipment      
Property, Plant and Equipment [Line Items]      
Fixed assets, at cost 126,821 90,787  
Leasehold improvements      
Property, Plant and Equipment [Line Items]      
Fixed assets, at cost 141,174 89,226  
Computer software and hardware      
Property, Plant and Equipment [Line Items]      
Fixed assets, at cost 52,687 $ 40,699  
Land [Member]      
Property, Plant and Equipment [Line Items]      
Fixed assets, at cost $ 4,976