Note 6 - Restructuring - Activity Related to Restructuring Plans (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Jul. 02, 2022	Jul. 03, 2021	Oct. 01, 2022	Oct. 02, 2021
Restructuring charges		$ 2,315	$ 166	$ 2,505	$ 546
Employee Severance [Member]
Accrued Restructuring	[1]			251	246
Restructuring charges	[1]			303	15
Costs paid or otherwise settled	[1]			(154)	(165)
Accrued Restructuring	[1]			400	96
Lease Termination and Fixed Assets [Member]
Accrued Restructuring				7,130	8,233
Restructuring charges				1,562	531
Costs paid or otherwise settled				(2,477)	(1,346)
Accrued Restructuring				6,215	7,418
Software Contracts and Engineering Tools [Member]
Accrued Restructuring	[2]			0	664
Restructuring charges	[2]			640	0
Costs paid or otherwise settled	[2]			0	(664)
Accrued Restructuring	[2]			640	0
Other Restructuring [Member]
Accrued Restructuring				7,381	9,143
Restructuring charges				2,505	546
Costs paid or otherwise settled				(2,631)	(2,175)
Accrued Restructuring				$ 7,255	$ 7,514

[1] Includes employee relocation and outplacement costs.

[2] Includes termination fees on the cancellation of certain contracts under previous restructuring plans