Annual report pursuant to Section 13 and 15(d)

Debt (Details)

v3.10.0.1
Debt (Details)
12 Months Ended
Jan. 04, 2019
USD ($)
Jan. 03, 2019
Oct. 28, 2018
USD ($)
Jan. 25, 2018
USD ($)
Oct. 28, 2018
USD ($)
Oct. 29, 2017
USD ($)
Jun. 08, 2018
USD ($)
Jan. 31, 2018
USD ($)
Jan. 24, 2018
USD ($)
Extinguishment of Debt [Line Items]                  
Approximate weekly employee compensation, payroll taxes and payments to vendors         $ 20,000,000        
DZ Financing Program                  
Extinguishment of Debt [Line Items]                  
Accounts receivable securitization program, term       2 years          
Accounts receivable securitization program, maximum investment limit       $ 115,000,000.0          
Outstanding borrowings     $ 50,000,000   $ 50,000,000 $ 50,000,000      
Weighted average annual interest rate during period         3.60% 3.10%      
DZ Financing Program, 2018 Amendment | Subsequent Event                  
Extinguishment of Debt [Line Items]                  
Covenant, minimum tangible net worth, through fiscal 2019 $ 30,000,000.0                
Covenant, minimum tangible net worth, fiscal 2020 $ 40,000,000.0                
Maximum permitted delinquent receivables, payment terms (excess of) 60 days                
Maximum permitted delinquent receivables, percent 10.00% 2.50%              
Line of Credit | Minimum                  
Extinguishment of Debt [Line Items]                  
Target liquidity ratio         1.5        
Line of Credit | Maximum                  
Extinguishment of Debt [Line Items]                  
Target liquidity ratio         2.0        
Letter of Credit | DZ Financing Program                  
Extinguishment of Debt [Line Items]                  
Current borrowing capacity       $ 35,000,000.0          
Covenant, minimum tangible net worth     $ 40,000,000.0            
Covenant, maximum debt to tangible net worth ratio     3            
Covenant, minimum liquid assets     $ 15,000,000.0   $ 15,000,000.0        
Available borrowing capacity of facility     38,300,000   38,300,000        
Additional borrowing capacity of facility             $ 10,000,000    
Credit facility debt outstanding     25,400,000   25,400,000        
Collateral               $ 30,000,000  
Letter of Credit | DZ Financing Program | Short Term Financing Program                  
Extinguishment of Debt [Line Items]                  
Credit facility debt outstanding     23,500,000   23,500,000        
Letter of Credit | DZ Financing Program | Federal Funds Rate                  
Extinguishment of Debt [Line Items]                  
Basis spread on variable rate       3.00%          
Letter of Credit | DZ Financing Program | Prime Rate                  
Extinguishment of Debt [Line Items]                  
Basis spread on variable rate       2.50%          
Letter of Credit | PNC Financing Program                  
Extinguishment of Debt [Line Items]                  
Current borrowing capacity                 $ 160,000,000.0
Letter of Credit, Security Deposit | DZ Financing Program                  
Extinguishment of Debt [Line Items]                  
Credit facility debt outstanding     1,100,000   1,100,000        
Letter of Credit, Corporate Credit Card Program | DZ Financing Program                  
Extinguishment of Debt [Line Items]                  
Credit facility debt outstanding     $ 800,000   $ 800,000