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Note 10 - Segment and Geographic Information - Summary of Current Segments (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 24, 2022 | Sep. 25, 2021 | Sep. 24, 2022 | Sep. 25, 2021
Net sales | $ 206,687 | $ 225,063 | $ 621,670 | $ 695,354
Profit (loss) for reportable segments |  | 36,345 |  | 117,480
Gain (Loss) on Disposition of Business | (0) | 90 | (0) | 75,754
Interest expense | (1,028) | (966) | (2,928) | (5,372)
Interest income | 1,132 | 53 | 1,551 | 197
Gain (Loss) on Extinguishment of Debt, Total | (80) | (1,650) | (312) | (3,411)
Income from operations before taxes | $ 35,075 | 31,125 | $ 100,604 | 175,062
Corporate, Non-Segment [Member] |  |  |  |
Corporate expenses |  | (2,747) |  | (9,586)
Semiconductor Test and Inspection [Member] |  |  |  |
Net sales |  | 225,063 |  | 668,594
Profit (loss) for reportable segments |  | 36,345 |  | 113,573
PCB Test [Member] |  |  |  |
Net sales |  | 0 |  | 26,760
Profit (loss) for reportable segments |  | $ 0 |  | $ 3,907

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