Quarterly report pursuant to Section 13 or 15(d)

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

v3.7.0.1
Summary of Significant Accounting Policies - Insurance and Revenues (Details)
 1 Months Ended 3 Months Ended 12 Months Ended
Nov. 24, 2016
derivative
Mar. 30, 2017
USD ($)
Mar. 31, 2016
USD ($)
Dec. 26, 2013
derivative
Jan. 01, 2016
USD ($)
Self-Insurance Reserves          
Maximum loss before additional coverage applies   $ 5,000,000      
Derivative Financial Instruments          
Cash flow hedge ineffectiveness during the period   0 $ 0    
Revenue Recognition and Gift Cards          
Gift card breakage income   166,000 66,000    
Sales Returns and Allowances          
Allowance for sales returns   5,530,000 4,277,000    
Advertising and Pre-opening Expense          
Pre-opening expenses   4,167,000 3,316,000    
Selling and store operating expenses and pre-opening expenses          
Advertising and Pre-opening Expense          
Advertising expense   $ 10,626,000 $ 8,778,000    
Interest Rate Cap          
Derivative Financial Instruments          
Number of derivatives designated cash flow hedges entered into during period | derivative 2        
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      
Stock-Based Compensation          
Period of vesting provision   3 years      
Maximum          
Revenue Recognition and Gift Cards          
Number of days customers may store merchandise   14 days      
Advertising and Pre-opening Expense          
Period prior to store opening or relocation that pre-opening expenses begin   6 months      
Stock-Based Compensation          
Period of vesting provision   5 years      
Workers' compensation          
Self-Insurance Reserves          
Per occurrence deductible   $ 250,000      
General liability          
Self-Insurance Reserves          
Per occurrence deductible   $ 150,000      
Retained Earnings [Member] | Accounting Standards Update 2016-09 [Member]          
Cumulative effect of adoption         $ (148,000)
Additional Paid-in Capital [Member] | Accounting Standards Update 2016-09 [Member]          
Cumulative effect of adoption         $ 238,000