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Note 10 - Income Taxes - Effective Tax Rate Reconciliation (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2023
Jan. 01, 2023
Jan. 02, 2022
Income tax benefit at statutory rate $ (55) $ (876) $ (1,364)
State taxes 9 3 3
Foreign taxes 0 106 124
Stock compensation and other permanent differences (740) 21 (155)
PPP loan forgiveness 0 0 (250)
R&D tax credits (480) (318) (230)
Expired tax attributes 1,290 3,563 3,303
Future benefit of deferred tax assets not recognized 22 2,401 1,312
Provision for income taxes $ 2 $ 98 $ 119