Property, Equipment and Leasehold Improvements (Detail) - USD ($) $ in Thousands	Dec. 29, 2023	Dec. 30, 2022
Property:
Land	$ 18,339	$ 18,339
Buildings	69,698	69,600
Construction in progress	1,114	1,381
Equipment:
Machinery and equipment	54,008	54,476
Office furniture and equipment	12,411	10,632
Leasehold improvements	23,759	14,145
Property, Plant and Equipment, Gross, Total	179,329	168,573
Less accumulated depreciation and amortization	104,011	103,034
Property, equipment and leasehold improvements, net	$ 75,318	$ 65,539