Note 6 - Acquisitions and Divestitures (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 28, 2024	Dec. 30, 2023
Gain (Loss) on Disposition of Assets	$ (0)	$ 395
Engineering [Member] | Pickering and Kincardine Offices [Member]
Gain (Loss) on Disposition of Assets		$ 400
All Active Acquisitions {member]
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High	$ 200