Annual report pursuant to Section 13 and 15(d)

Notes Payable - Additional Information (Detail)

v3.7.0.1
Notes Payable - Additional Information (Detail) - USD ($)
 12 Months Ended
Jan. 28, 2017
Jan. 30, 2016
Line of Credit Facility [Line Items]    
Outstanding debt under credit facility $ 0 $ 0
Amended and Restated Loan and Security Agreement [Member]    
Line of Credit Facility [Line Items]    
Loan Agreement maturity date Dec. 31, 2018  
Additional credit available under the revolving facility with consent by each lender and other conditions $ 50,000,000  
Interest rate on outstanding borrowing under facility London Interbank Offered Rate plus 1.50%  
Percentage of unused Line of Credit Facility Fee 0.20%  
Amended and Restated Loan and Security Agreement [Member] | London Interbank Offered Rate (LIBOR) [Member]    
Line of Credit Facility [Line Items]    
Outstanding borrowings interest spread over the London Interbank Offered Rate 1.50%  
Amended and Restated Loan and Security Agreement [Member] | Revolving Credit Facility [Member]    
Line of Credit Facility [Line Items]    
Credit facility, maximum borrowing capacity $ 200,000,000  
Amended and Restated Loan and Security Agreement [Member] | Subfacility for Standby Letters of Credit [Member]    
Line of Credit Facility [Line Items]    
Credit facility, maximum borrowing capacity $ 10,000,000