Quarterly report pursuant to Section 13 or 15(d)

Debt - Narrative (Details)

v3.20.1
Debt - Narrative (Details) - USD ($)
1 Months Ended 3 Months Ended 5 Months Ended 6 Months Ended 14 Months Ended
Mar. 11, 2020
Jan. 14, 2020
May 03, 2020
Nov. 07, 2021
Nov. 01, 2020
May 03, 2020
Apr. 28, 2019
Aug. 02, 2020
May 03, 2020
Apr. 28, 2019
Jul. 31, 2021
Nov. 03, 2019
Jul. 19, 2019
Extinguishment of Debt [Line Items]                          
Approximate weekly employee compensation, payroll taxes and payments to vendors                 $ 16,000,000        
DZ Financing Program                          
Extinguishment of Debt [Line Items]                          
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     $ 15,000,000.0        
Borrowing availability     4,200,000     4,200,000     4,200,000        
Long-term debt     60,000,000     $ 60,000,000 $ 55,000,000   $ 60,000,000 $ 55,000,000      
Interest rate during period           3.30% 4.30%   3.20% 4.20%      
DZ Financing Program | Subsequent Event | Forecast                          
Extinguishment of Debt [Line Items]                          
Covenant, minimum tangible net worth       $ 40,000,000.0 $ 40,000,000.0     $ 35,000,000.0     $ 20,000,000.0    
DZ Financing Program | Short Term Financing Program                          
Extinguishment of Debt [Line Items]                          
Line of credit, amount outstanding     23,300,000     $ 23,300,000     $ 23,300,000        
Long-term debt     60,000,000     60,000,000     60,000,000     $ 55,000,000  
DZ Financing Program | Letter of Credit                          
Extinguishment of Debt [Line Items]                          
Borrowing capacity of facility   $ 35,000,000.0                      
Line of credit, amount outstanding     24,800,000     24,800,000     24,800,000        
DZ Financing Program | Letter of Credit, Security Deposit                          
Extinguishment of Debt [Line Items]                          
Line of credit, amount outstanding     1,200,000     1,200,000     1,200,000        
DZ Financing Program | Letter of Credit, Credit Card Program                          
Extinguishment of Debt [Line Items]                          
Line of credit, amount outstanding     300,000     $ 300,000     $ 300,000        
DZ Financing Program | Federal Funds Rate | Letter of Credit                          
Extinguishment of Debt [Line Items]                          
Basis spread on variable rate   3.00%                      
DZ Financing Program | Prime Rate | Letter of Credit                          
Extinguishment of Debt [Line Items]                          
Basis spread on variable rate   2.50%                      
Minimum                          
Extinguishment of Debt [Line Items]                          
Target liquidity ratio                 1.5        
Minimum | DZ Financing Program                          
Extinguishment of Debt [Line Items]                          
Additional borrowing capacity of facility                         $ 5,000,000.0
Maximum | DZ Financing Program                          
Extinguishment of Debt [Line Items]                          
Additional borrowing capacity of facility                         $ 7,000,000.0
COVID-19 Pandemic                          
Extinguishment of Debt [Line Items]                          
Weekly reduction to payroll and related tax payments     $ 2,000,000