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Note 12 - Business Divestitures (Details Textual) $ in Thousands |  | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
Jun. 24, 2021 USD ($) | Sep. 24, 2022 USD ($) | Sep. 25, 2021 USD ($) | Sep. 24, 2022 USD ($) | Sep. 25, 2021 USD ($)
Gain (Loss) on Disposition of Business |  | $ (0) | $ 90 | $ (0) | $ 75,754
Number of Reportable Segments | 2 |  |  | 1 |
Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | PCB Test Business [Member] |  |  |  |  |
Proceeds from Sales of Business, Affiliate and Productive Assets | $ 125,100 |  |  |  |
Gain (Loss) on Disposition of Business | 70,800 |  |  |  |
Disposal Group, Including Discontinued Operation, Assets, Total | 48,200 |  |  |  |
Disposal Group, Including Discontinued Operation, Goodwill | 21,900 |  |  |  |
Disposal Group, Including Discontinued Operation, Intangible Assets | $ 14,800 |  |  |  |

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