Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Insurance and Revenues (Details)

v3.8.0.1
Summary of Significant Accounting Policies - Insurance and Revenues (Details)
$ in Thousands
 1 Months Ended 12 Months Ended
Nov. 24, 2016
derivative
Dec. 28, 2017
USD ($)
derivative
Dec. 29, 2016
USD ($)
Dec. 31, 2015
USD ($)
Dec. 26, 2013
derivative
Self-Insurance Reserves          
Maximum loss before additional coverage applies   $ 7,000      
Revenue Recognition and Gift Cards          
Number of days customers may store merchandise   14 days      
Gift card breakage income   $ 757 $ 627 $ 511  
Sales Returns and Allowances          
Allowance for sales returns   7,189 4,887    
Advertising and Pre-opening Expense          
Advertising expense   43,560 33,497 24,478  
Pre-opening expenses   $ 16,485 $ 13,732 $ 7,380  
Interest Rate Cap          
Derivative Financial Instruments          
Number of derivatives designated cash flow hedges entered into during period | derivative 2        
Number of instruments dedesignated as hedge | derivative   1      
Interest Rate Swap          
Derivative Financial Instruments          
Number of derivatives designated cash flow hedges entered into during period | derivative         2
Minimum          
Advertising and Pre-opening Expense          
Period prior to store opening or relocation that pre-opening expenses begin   3 months      
Maximum          
Advertising and Pre-opening Expense          
Period prior to store opening or relocation that pre-opening expenses begin   6 months