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Revenue (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Dec. 29, 2018
Dec. 30, 2017
Dec. 29, 2018
Dec. 30, 2017
Disaggregation of Revenue [Line Items]        
Net sales $ 123,037 $ 111,725 $ 250,509 $ 220,942
Over-Time        
Disaggregation of Revenue [Line Items]        
Net sales 119,790   241,306  
Point-in-Time        
Disaggregation of Revenue [Line Items]        
Net sales $ 3,247   $ 9,203