Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies (Details)

v3.19.1
Summary of Significant Accounting Policies (Details)
ft² in Thousands
3 Months Ended 12 Months Ended
Mar. 28, 2019
ft²
state
segment
facility
Dec. 26, 2019
Dec. 27, 2018
Real Estate Properties [Line Items]      
Number of reportable segments | segment 1    
Number of states with facilities | state 28    
Number of distribution centers 3    
Fiscal year period   364 days 364 days
Fiscal quarter period 91 days    
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 103    
Area of facility | ft² 75    
Small Format Store [Member]      
Real Estate Properties [Line Items]      
Number of stores 1