Note 12 - Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Jan. 02, 2021	Dec. 28, 2018
Accrued expenses and reserves	$ 5,464	$ 3,527
Stock-based and deferred compensation	3,851	2,812
Lease liability	4,190	4,369
Intangible assets	10,082	12,294
Fixed assets	351	256
Net operating loss carry forwards	87,443	86,899
Tax credit carry forwards	83,534	90,339
Capital loss carry forwards	4,018	4,235
Other	934	1,059
Total deferred tax assets	199,867	205,790
Less: valuation allowance	(192,478)	(198,499)
Net deferred tax assets	7,389	7,291
Fixed assets	2,809	2,620
Unremitted earnings	1,746	0
Deferred revenue	64	434
Right-of-use asset	3,939	3,759
Total deferred tax liabilities	8,558	6,813
Net deferred taxes liabilities	$ (1,169)
Net deferred taxes assets		$ 478