Note 6 - Restructuring - Activity Related to Restructuring Plans (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 29, 2024	Jul. 01, 2023	Jun. 29, 2024	Jul. 01, 2023
Restructuring		$ 2,579	$ (112)	$ 4,283	$ (82)
Employee Severance [Member]
Accrued Restructuring	[1]			1,490	400
Restructuring	[1]			5,001	(135)
Costs paid or otherwise settled	[1]			(3,713)	(265)
Accrued Restructuring	[1]	2,778	0	2,778	0
Lease Termination and Fixed Assets [Member]
Accrued Restructuring				4,508	5,892
Restructuring				(98)	49
Costs paid or otherwise settled				(652)	(721)
Accrued Restructuring		3,758	5,220	3,758	5,220
Software Contracts and Engineering Tools [Member]
Accrued Restructuring	[2]			620	640
Restructuring	[2]			(620)	4
Costs paid or otherwise settled	[2]			0	(24)
Accrued Restructuring	[2]	0	620	0	620
Other Restructuring [Member]
Accrued Restructuring				6,618	6,932
Restructuring				4,283	(82)
Costs paid or otherwise settled				(4,365)	(1,010)
Accrued Restructuring		$ 6,536	$ 5,840	$ 6,536	$ 5,840

[1] Includes employee relocation and outplacement costs

[2] Includes termination fees on the cancellation of certain contracts