Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies (Details)

v3.10.0.1
Summary of Significant Accounting Policies (Details)
ft² in Thousands
9 Months Ended 12 Months Ended
Apr. 24, 2017
Sep. 27, 2018
ft²
state
segment
facility
Dec. 27, 2018
Dec. 28, 2017
Real Estate Properties [Line Items]        
Number of reportable segments | segment   1    
Number of states with facilities | state   26    
Number of distribution centers   3    
Fiscal year period     364 days 364 days
Fiscal quarter period   91 days    
Stock split conversion ratio 321.820      
Minimum        
Real Estate Properties [Line Items]        
Fiscal year period   364 days    
Maximum        
Real Estate Properties [Line Items]        
Fiscal year period   371 days    
Warehouse Format Store [Member]        
Real Estate Properties [Line Items]        
Number of stores   95    
Area of facility | ft²   75    
Small Format Store [Member]        
Real Estate Properties [Line Items]        
Number of stores   1