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Company Contributions (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 28, 2019	Dec. 29, 2018	Dec. 30, 2017
Defined Contribution and Defined Benefit Plans [Line Items]
Expected company contribution	$ 675
Pension plans
Defined Contribution and Defined Benefit Plans [Line Items]
Contribution of company to company pension plans	2,771	$ 40,971	$ 1,891
401K (DC Plan)
Defined Contribution and Defined Benefit Plans [Line Items]
Contribution of company to company pension plans	722	1,308	376
Required | Pension plans
Defined Contribution and Defined Benefit Plans [Line Items]
Contribution of company to company pension plans	1,040	271	286
Discretionary | Pension plans
Defined Contribution and Defined Benefit Plans [Line Items]
Contribution of company to company pension plans	$ 1,731	$ 40,700	$ 1,605

X

- Definition

Amount of contribution received by defined benefit plan from employer which increases plan assets.

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- Definition

Amount of contributions expected to be received by defined benefit plan from employer in next fiscal year following latest fiscal year.

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