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Fair Value of Financial Assets and Liabilities - Additional Information (Details) - USD ($)
Jan. 31, 2020
Feb. 01, 2019
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Restricted cash $ 2,149,000 $ 1,948,000
Nonrecurring    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Nonfinancial assets fair value disclosure 0 0
Nonfinancial liabilities fair value disclosure 0 0
Fair Value | Level 1    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Restricted cash $ 2,100,000 $ 1,900,000