Valuation and Qualifying Accounts and Reserves (Detail) - USD ($) $ in Thousands		12 Months Ended
		Jan. 02, 2021	Dec. 28, 2019	Dec. 29, 2018
Allowance for doubtful accounts
Valuation And Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period		$ 1,813	$ 1,743	$ 2,001
Additions charged to Costs and Expenses		411	(123)	130
Additions charged to Other Accounts		0	0	0
Deductions	[1]	74	193	(388)
Balance at End of Period		2,298	1,813	1,743
Inventory and other reserves
Valuation And Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period		4,685	3,843	3,984
Additions charged to Costs and Expenses		16,425	8,710	7,906
Additions charged to Other Accounts		0	0	0
Deductions	[1]	(10,871)	(7,868)	(8,047)
Balance at End of Period		10,239	4,685	3,843
Tax valuation allowance
Valuation And Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period		6,760	6,191	22,760
Additions charged to Costs and Expenses		792	709	1,893
Additions charged to Other Accounts		141	(40)	(403)
Deductions	[1]	(503)	(100)	(18,059)
Balance at End of Period		$ 7,190	$ 6,760	$ 6,191

[1] Primarily represents the utilization of established reserves, net of recoveries, where applicable.