Schedule of Derivative Instruments (Detail) - USD ($) $ in Thousands	Dec. 28, 2019	Sep. 28, 2019	Jun. 29, 2019	Mar. 30, 2019	Dec. 29, 2018	Sep. 29, 2018	Jun. 30, 2018	Mar. 31, 2018
Derivative [Line Items]
Derivative, Notional Amount								$ 45,600
Subsequent Event [Member]
Derivative [Line Items]
Derivative, Fair Value, Net	$ 507	$ 826	$ 556	$ 248	$ (87)	$ (426)	$ (592)
Subsequent Event [Member] | Mexico, Pesos
Derivative [Line Items]
Derivative, Notional Amount	152,613	148,468	142,947	137,944	125,328	90,443	95,500
Subsequent Event [Member] | United States of America, Dollars
Derivative [Line Items]
Derivative, Notional Amount	$ 7,187	$ 6,740	$ 6,828	$ 6,979	$ 6,746	$ 5,301	$ 5,811