Note 1 - Summary of Significant Accounting Policies - Inventories (Details) - USD ($) $ in Thousands	Mar. 30, 2024	Dec. 30, 2023
Raw materials and purchased parts	$ 97,661	$ 103,118
Work in process	28,931	26,820
Finished goods	24,995	25,855
Total inventories	$ 151,587	$ 155,793	[1]

[1] Derived from December 30, 2023 audited financial statements