Balance Sheet Information - Summary of Inventories (Detail) - USD ($) $ in Thousands	Jun. 28, 2019	Dec. 28, 2018
Inventory Disclosure [Abstract]
Raw materials	$ 99,498	$ 121,383
Work in process	46,482	50,959
Finished goods	18,075	13,774
Total	$ 164,055	$ 186,116

No definition available.

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Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer.

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-Topic 210
-SubTopic 10
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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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Amount before valuation and LIFO reserves of raw materials expected to be sold, or consumed within one year or operating cycle, if longer.

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Amount before valuation and LIFO reserves of merchandise or goods in the production process expected to be completed within one year or operating cycle, if longer.

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