Schedule of Derivative Instruments (Detail) - USD ($) $ in Thousands	Jun. 27, 2020	Mar. 28, 2020	Dec. 28, 2019	Sep. 28, 2019	Jun. 29, 2019	Mar. 30, 2019	Dec. 29, 2018
Derivative [Line Items]
Derivative, Notional Amount							$ 40,500
Subsequent Event [Member]
Derivative [Line Items]
Derivative, Fair Value, Net	$ 209	$ 404	$ 170	$ 521	$ 278	$ 1
Subsequent Event [Member] | Mexico, Pesos
Derivative [Line Items]
Derivative, Notional Amount	138,213	146,613	152,613	148,468	142,947	137,944
Subsequent Event [Member] | United States of America, Dollars
Derivative [Line Items]
Derivative, Notional Amount	$ 6,257	$ 6,553	$ 7,187	$ 6,740	$ 6,828	$ 6,979