Plans Fair Value of Plan Assets by Asset Class (Detail) - USD ($) $ in Thousands		Jan. 01, 2022	Dec. 31, 2021	Jan. 02, 2021	Dec. 31, 2020	Dec. 28, 2019
Pension plans
Schedule of Pension Plan Assets by Fair Value [Line Items]
Fair value of plan assets		$ 33,589	$ 33,589	$ 34,750	$ 34,750	$ 360,675
Short Term Investments And Cash
Schedule of Pension Plan Assets by Fair Value [Line Items]
Fair value of plan assets			453		546
Common Stocks | International Common Stocks
Schedule of Pension Plan Assets by Fair Value [Line Items]
Fair value of plan assets			4,708		5,223
Common Stocks | U.S. Common Stocks
Schedule of Pension Plan Assets by Fair Value [Line Items]
Fair value of plan assets			8,177		8,587
Fixed Income Securities | US Treasury Securities
Schedule of Pension Plan Assets by Fair Value [Line Items]
Fair value of plan assets			13,514		14,577
Fixed Income Securities | Domestic Corporate Debt Securities
Schedule of Pension Plan Assets by Fair Value [Line Items]
Fair value of plan assets			6,737		5,877
Accrued (Expenses) Income
Schedule of Pension Plan Assets by Fair Value [Line Items]
Fair value of plan assets	[1]				(25)
Other Assets And Liabilities
Schedule of Pension Plan Assets by Fair Value [Line Items]
Fair value of plan assets and (liabilities)	[1]				(35)
Level 1 | Pension plans
Schedule of Pension Plan Assets by Fair Value [Line Items]
Fair value of plan assets			33,589		34,810
Level 1 | Short Term Investments And Cash
Schedule of Pension Plan Assets by Fair Value [Line Items]
Fair value of plan assets			453		546
Level 1 | Common Stocks | International Common Stocks
Schedule of Pension Plan Assets by Fair Value [Line Items]
Fair value of plan assets			4,708		5,223
Level 1 | Common Stocks | U.S. Common Stocks
Schedule of Pension Plan Assets by Fair Value [Line Items]
Fair value of plan assets			8,177		8,587
Level 1 | Fixed Income Securities | US Treasury Securities
Schedule of Pension Plan Assets by Fair Value [Line Items]
Fair value of plan assets			13,514		14,577
Level 1 | Fixed Income Securities | Domestic Corporate Debt Securities
Schedule of Pension Plan Assets by Fair Value [Line Items]
Fair value of plan assets			$ 6,737		$ 5,877

[1] This class includes accrued interest, dividends, and amounts receivable from asset sales and amounts payable for asset purchases.