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Related Party Transaction - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Dec. 27, 2018
Dec. 28, 2017
Dec. 27, 2018
Dec. 28, 2017
Related Party Transaction [Line Items]        
Interest paid $ 293 $ 245 $ 602 $ 439
Promissory Note [Member]        
Related Party Transaction [Line Items]        
Purchase price financed by seller through unsecured debt   $ 11,500    
Interest rate 5.50%   5.50%  
Outstanding balance $ 7,347   $ 7,347  
Interest paid $ 110   $ 233