XML 39 R28.htm IDEA: XBRL DOCUMENT v3.8.0.1
Acquisition - Additional Information (Detail) - USD ($)
9 Months Ended
Feb. 01, 2016
Oct. 31, 2017
Oct. 31, 2016
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