Plans Fair Value of Plan Assets by Asset Class (Detail) - USD ($) $ in Thousands	Dec. 28, 2024	Dec. 30, 2023	Dec. 31, 2022
Pension plans
Schedule of Pension Plan Assets by Fair Value [Line Items]
Fair value of plan assets	$ 27,856	$ 29,404	$ 28,090
Short Term Investments And Cash
Schedule of Pension Plan Assets by Fair Value [Line Items]
Fair value of plan assets	214	501
Common Stocks | International Common Stocks
Schedule of Pension Plan Assets by Fair Value [Line Items]
Fair value of plan assets	2,022	2,401
Common Stocks | U.S. Common Stocks
Schedule of Pension Plan Assets by Fair Value [Line Items]
Fair value of plan assets	4,190	4,425
Fixed Income Securities | Domestic Corporate Debt Securities
Schedule of Pension Plan Assets by Fair Value [Line Items]
Fair value of plan assets	21,430	22,077
Level 1 | Pension plans
Schedule of Pension Plan Assets by Fair Value [Line Items]
Fair value of plan assets	6,426	29,404
Level 1 | Short Term Investments And Cash
Schedule of Pension Plan Assets by Fair Value [Line Items]
Fair value of plan assets	214	501
Level 1 | Common Stocks | International Common Stocks
Schedule of Pension Plan Assets by Fair Value [Line Items]
Fair value of plan assets	2,022	2,401
Level 1 | Common Stocks | U.S. Common Stocks
Schedule of Pension Plan Assets by Fair Value [Line Items]
Fair value of plan assets	4,190	4,425
Level 1 | Fixed Income Securities | Domestic Corporate Debt Securities
Schedule of Pension Plan Assets by Fair Value [Line Items]
Fair value of plan assets		$ 22,077
Level 2 | Pension plans
Schedule of Pension Plan Assets by Fair Value [Line Items]
Fair value of plan assets	21,430
Level 2 | Fixed Income Securities | Domestic Corporate Debt Securities
Schedule of Pension Plan Assets by Fair Value [Line Items]
Fair value of plan assets	$ 21,430