Note 13 - Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Jan. 01, 2022
Intangible assets	$ 6,264	$ 8,236
Net operating loss carry forwards	15,362	88,254
Tax credit carry forwards	103,092	93,095
Accrued liabilities and reserves	12,932	6,590
Stock-based and deferred compensation	3,769	4,477
Other	5,031	6,615
Total deferred tax assets	146,450	207,267
Less: valuation allowance	(140,533)	(200,438)
Net deferred tax assets	5,917	6,829
Fixed assets	2,058	2,379
Unremitted earnings	2,498	2,128
Other	8,134	9,969
Total deferred tax liabilities	12,690	14,476
Net deferred taxes	(6,773)	(7,647)
Deferred tax assets (included in Other long-term assets)	5,917	6,829
Deferred tax liabilities (included in Other long-term liabilities)	(12,690)	(14,476)
Net deferred taxes	(6,773)	(7,647)
Other Noncurrent Assets [Member]
Net deferred tax assets	1,022	953
Deferred tax assets (included in Other long-term assets)	1,022	953
Other Noncurrent Liabilities [Member]
Total deferred tax liabilities	7,795	8,600
Deferred tax liabilities (included in Other long-term liabilities)	$ (7,795)	$ (8,600)