Schedule II - Valuation and Qualifying Accounts (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jan. 01, 2023	Jan. 02, 2022	Jan. 03, 2021
Allowance for doubtful receivables [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	$ 62	$ 58	$ 58
Charged to Costs and Expenses	61	83	44
Deductions	(79)	(79)	(44)
Balance at End of Period	44	62	58
Allowance for sales returns [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	2,528	2,444	2,702
Charged to Costs and Expenses	(204)	84	(258)
Balance at End of Period	2,324	2,528	2,444
Inventory reserves [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	5,547	6,138	6,796
Charged to Costs and Expenses	3,836	3,335	2,954
Deductions	(3,919)	(3,926)	(3,612)
Balance at End of Period	$ 5,464	$ 5,547	$ 6,138