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Revenue Disaggregation of Revenue (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Dec. 26, 2020
Dec. 28, 2019
Dec. 26, 2020
Dec. 28, 2019
Disaggregation of Revenue [Line Items]        
Net sales $ 128,262 $ 116,722 $ 251,469 $ 222,007
Over-Time        
Disaggregation of Revenue [Line Items]        
Net sales 125,534 115,118 246,370 219,144
Point-in-Time        
Disaggregation of Revenue [Line Items]        
Net sales $ 2,728 $ 1,604 $ 5,099 $ 2,863