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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

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