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Senior Credit Facility - Additional Information (Details) - USD ($)
9 Months Ended
Oct. 31, 2020
Feb. 01, 2020
Nov. 02, 2019
Line of Credit Facility [Line Items]      
Line of credit facility maximum borrowing capacity $ 75,000,000    
Revolving line of credit $ 0 $ 0 $ 25,000,000
Revolving credit facility      
Line of Credit Facility [Line Items]      
Percentage of fee on unused portion of the facility 0.25%    
Letters of Credit Outstanding, Amount $ 1,750,000    
Revolving credit facility | Minimum      
Line of Credit Facility [Line Items]      
Interest at an annual rate equal to LIBOR plus a margin range 1.25%    
Revolving credit facility | Maximum      
Line of Credit Facility [Line Items]      
Interest at an annual rate equal to LIBOR plus a margin range 1.75%    
Secured credit facility | Revolving credit facility      
Line of Credit Facility [Line Items]      
Line of credit facility maximum borrowing capacity $ 75,000,000    
Swingline availability 10,000,000    
Incremental accordion feature 25,000,000    
Revolving line of credit 0    
Available borrowing capacity of line of credit facility $ 69,700,000