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Line of Credit - Additional Information (Details) - USD ($)
3 Months Ended 12 Months Ended
Feb. 01, 2018
May 05, 2018
Apr. 29, 2017
Feb. 03, 2018
Mar. 25, 2016
Line Of Credit Facility [Line Items]          
Minimum excess availability on Combined Loan Cap   10.00%      
Minimum amount excess availability on Combined Loan Cap   $ 7,000,000      
Payment of financing costs   80,000 $ 6,000    
Outstanding borrowings under Credit Facility   15,200,000 2,100,000 $ 8,000,000  
Letters of credit   7,327,000 5,827,000    
Line of credit availability   $ 18,796,000 $ 14,729,000    
Borrowings interest rate   3.60% 3.11%    
Line of credit, outstanding borrowings   $ 19,436,000 $ 11,138,000    
Line of credit borrowings during period   $ 27,400,000 $ 15,700,000    
Senior Secured Revolving Credit Facility          
Line Of Credit Facility [Line Items]          
Credit facility, maximum borrowing capacity $ 50,000,000        
Unused line fee under the Credit Facility   0.25%      
Credit Facility Description of Variable Rate Basis   The interest rate on outstanding borrowings is equal to, at the Company’s election, either 1) the lender’s base rate plus 0.50% or 2) a LIBOR rate plus 1.0%.      
Deferred financing costs       1,280,000  
Payment of financing costs       $ 107,000  
Senior Secured Revolving Credit Facility | Base Rate          
Line Of Credit Facility [Line Items]          
Applicable margin rate   0.50%      
Senior Secured Revolving Credit Facility | London Interbank Offered Rate (LIBOR)          
Line Of Credit Facility [Line Items]          
Applicable margin rate   1.00%      
Senior Secured Revolving Credit Facility | Credit Facility          
Line Of Credit Facility [Line Items]          
Credit facility, maximum borrowing capacity         $ 70,000,000
Term Loan          
Line Of Credit Facility [Line Items]          
Loan available for borrowing $ 25,000,000        
Minimum excess availability on Combined Loan Cap 10.00%        
Credit Facility Description of Variable Rate Basis   The interest rate on the Term Loan is equal to a LIBOR rate plus 9.0%.      
Minimum amount excess availability on Combined Loan Cap $ 7,000,000        
Term Loan | London Interbank Offered Rate (LIBOR)          
Line Of Credit Facility [Line Items]          
Applicable margin rate 9.00%        
Term Loan | Senior Secured Revolving Credit Facility          
Line Of Credit Facility [Line Items]          
Line of credit maturity date extension   Jan. 31, 2023