Note 8 - Restructuring - Activity Related to Restructuring Plans (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 30, 2023	Dec. 31, 2022	Jan. 01, 2022
Restructuring	$ 1,908	$ 2,551	$ 940
Employee Severance [Member]
Accrued Restructuring	400	251	246
Restructuring	1,848	303	250
Costs paid or otherwise settled	(758)	(154)	(245)
Accrued Restructuring	1,490	400	251
Lease Termination and Fixed Assets [Member]
Accrued Restructuring	5,892	7,130	8,233
Restructuring	56	1,608	690
Costs paid or otherwise settled	(1,440)	(2,846)	(1,793)
Accrued Restructuring	4,508	5,892	7,130
Software Contracts and Engineering Tools [Member]
Accrued Restructuring	640	0	664
Restructuring	4	640	0
Costs paid or otherwise settled	(24)	0	(664)
Accrued Restructuring	620	640	0
Other Restructuring [Member]
Accrued Restructuring	6,932	7,381	9,143
Restructuring	1,908	2,551	940
Costs paid or otherwise settled	(2,222)	(3,000)	(2,702)
Accrued Restructuring	$ 6,618	$ 6,932	$ 7,381