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Note 10 - Income Taxes (Details Textual) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended
--- | ---
Dec. 28, 2024 | Dec. 30, 2023 | Dec. 31, 2022
Deferred Tax Assets, Valuation Allowance | $ 114,517 | $ 99,888 |
Increase (Decrease) of Net Income Due to Impact of Tax Holidays | $ 1,000 | $ 3,800 | $ 4,500
Increase (Decrease) of Earning Per Share Due To Impact Of Tax Holidays (in dollars per share) | $ 0.02 | $ 0.08 | $ 0.09
Unrecognized Tax Benefits that Would Impact Effective Tax Rate | $ 5,200 | $ 7,500 | $ 5,800
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued | 500 | 700 |
Unrecognized Tax Benefits, Interest Expense, Net of Accrued Interest Reversed | (200) | $ (100) | $ (100)
Maximum [Member] |  |  |
Unrecognized Tax Benefits, Increase (Decrease) Related to Transfer Pricing | 200 |  |
Collection Term Range (Year) |  | 10 years |
Minimum [Member] |  |  |
Collection Term Range (Year) |  | 4 years |
Domestic Tax Jurisdiction [Member] |  |  |
Operating Loss Carryforwards | 140,300 |  |
Tax Credit Carryforward, Amount | 3,000 |  |
State and Local Jurisdiction [Member] |  |  |
Operating Loss Carryforwards | 127,800 |  |
Tax Credit Carryforward, Amount | 35,400 |  |
Foreign Tax Jurisdiction [Member] |  |  |
Operating Loss Carryforwards | $ 1,800 |  |

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