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Acquisition - Additional Information (Detail) - USD ($)
12 Months Ended
Feb. 01, 2016
Jan. 31, 2018
Jan. 31, 2017
Business Acquisition [Line Items]      
Payment to acquire business, gross     $ 15,325,000
Vetri Family Group of Restaurants      
Business Acquisition [Line Items]      
Total aggregate purchase price $ 18,937,000    
Payment to acquire business, gross 15,325,000 $ 925,000  
Settlement of note receivable 2,687,000    
Liabilities assumed $ 0