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Note 10 - Segment and Geographic Information - Summary of Current Segments (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 25, 2022 | Jun. 26, 2021 | Jun. 25, 2022 | Jun. 26, 2021
Net sales | $ 217,226 | $ 244,803 | $ 414,983 | $ 470,291
Profit (loss) for reportable segments |  | 42,079 |  | 81,135
Gain (Loss) on Disposition of Business | (0) | 75,779 | (0) | 75,664
Interest expense | (919) | (1,831) | (1,900) | (4,406)
Interest income | 308 | 94 | 419 | 144
Gain (Loss) on Extinguishment of Debt, Total | (128) | 0 | (232) | (1,761)
Income from operations before taxes | $ 37,666 | 112,755 | $ 65,529 | 143,937
Corporate, Non-Segment [Member] |  |  |  |
Corporate expenses |  | (3,366) |  | (6,839)
Semiconductor Test and Inspection [Member] |  |  |  |
Net sales |  | 231,125 |  | 443,531
Profit (loss) for reportable segments |  | 40,601 |  | 77,228
PCB Test [Member] |  |  |  |
Net sales |  | 13,678 |  | 26,760
Profit (loss) for reportable segments |  | $ 1,478 |  | $ 3,907

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