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Senior Credit Facility - Additional Information (Detail) - USD ($)
12 Months Ended 54 Months Ended
Feb. 26, 2016
Jan. 28, 2017
Feb. 26, 2016
Revolving Credit Facility Before Amendment [Member] | Minimum [Member]      
Line of Credit Facility [Line Items]      
Swingline availability $ 5,000,000   $ 5,000,000
Revolving Credit Facility [Member] | Maximum [Member]      
Line of Credit Facility [Line Items]      
Swingline availability $ 10,000,000   10,000,000
Interest at an annual rate equal to LIBOR plus a margin range 0.25%    
Incremental accordion feature $ 25,000,000    
Secured Credit Facility [Member] | Revolving Credit Facility Before Amendment [Member] | Minimum [Member]      
Line of Credit Facility [Line Items]      
Line of credit facility maximum borrowing capacity 50,000,000   50,000,000
Secured Credit Facility [Member] | Revolving Credit Facility [Member]      
Line of Credit Facility [Line Items]      
Line of credit facility maximum borrowing capacity 50,000,000   50,000,000
Swingline availability $ 5,000,000   $ 5,000,000
Extension of Company's senior secured revolving credit facility     2016-08
Percentage of fee on unused portion of the facility     0.375%
Interest rate on borrowings   Borrowings under the 2011 Credit Agreement bore interest at an annual rate equal to LIBOR plus a margin ranging from 175 to 225 basis points with no LIBOR floor, and the fee paid to the Lenders on the unused portion of the credit facility was 37.5 basis points per annum.  
Outstanding borrowings under the credit facility   $ 0  
Available borrowing capacity of line of credit facility   $ 50,600,000  
Secured Credit Facility [Member] | Revolving Credit Facility [Member] | Minimum [Member]      
Line of Credit Facility [Line Items]      
Interest at an annual rate equal to LIBOR plus a margin range 1.25%   1.75%
Secured Credit Facility [Member] | Revolving Credit Facility [Member] | Maximum [Member]      
Line of Credit Facility [Line Items]      
Line of credit facility maximum borrowing capacity $ 75,000,000   $ 75,000,000
Extension of Company's senior secured revolving credit facility 2021-02    
Interest at an annual rate equal to LIBOR plus a margin range 1.75%   2.25%