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Restricted Cash and Short-Term Investments - Narrative (Details) - USD ($)
$ in Millions
Aug. 02, 2020
Nov. 03, 2019
Jul. 28, 2019
DZ Financing Program      
Restricted Cash and Cash Equivalents Items [Line Items]      
Restricted cash $ 16.9    
Aggregate borrowing base usage 84.5    
Long-term debt 60.0   $ 55.0
Restricted cash and short-term investments      
Restricted Cash and Cash Equivalents Items [Line Items]      
Short-term investments 2.9 $ 3.0  
Short-Term Credit Facility | Restricted cash and short-term investments      
Restricted Cash and Cash Equivalents Items [Line Items]      
Restricted as collateral 0.5 0.5  
Letter of Credit | DZ Financing Program      
Restricted Cash and Cash Equivalents Items [Line Items]      
Line of credit, amount outstanding 24.5    
Associated Vendors      
Restricted Cash and Cash Equivalents Items [Line Items]      
Restricted cash $ 4.0 $ 9.3