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Schedule of Derivative Instruments (Detail) - Subsequent Event - USD ($)
$ in Thousands
Dec. 26, 2020
Sep. 26, 2020
Jun. 27, 2020
Mar. 28, 2020
Dec. 28, 2019
Sep. 28, 2019
Derivative [Line Items]            
Derivative, Fair Value, Net $ 157 $ 163 $ 577 $ 803 $ 590 $ 942
Mexico, Pesos            
Derivative [Line Items]            
Derivative, Notional Amount 132,773 141,173 138,213 146,613 152,613 148,468
United States of America, Dollars            
Derivative [Line Items]            
Derivative, Notional Amount $ 6,241 $ 6,729 $ 6,257 $ 6,553 $ 7,187 $ 6,740