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Note 10 - Segment and Geographic Information - Summary of Current Segments (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 25, 2021 | Dec. 26, 2020
Net sales |  | $ 812,775 | $ 887,214 | $ 636,007
Profit (loss) for reportable segments |  |  | 141,933 | 4,474
Gain (Loss) on Disposition of Business | [1] | (0) | 70,815 | (0)
Interest expense |  | (4,177) | (6,413) | (13,759)
Interest income |  | 4,012 | 239 | 224
Gain (Loss) on Extinguishment of Debt, Total |  | (312) | (3,411) | 268
Profit (loss) from continuing operations before taxes |  | 126,715 | 192,344 | (13,177)
Total depreciation and amortization |  | 46,016 | 48,568 | 52,746
Capital expenditures |  | 14,770 | 12,000 | 18,660
Total assets for reportable segments |  | $ 1,227,414 | 1,259,044 | 1,090,346
Discontinued operations |  |  |  | 0
Corporate, Non-Segment [Member] |  |  |  |
Corporate expenses |  |  | (10,819) | (4,384)
Total assets for reportable segments |  |  |  | 55,492
Semiconductor Test and Inspection [Member] |  |  |  |
Net sales |  |  | 860,454 | 585,240
Profit (loss) for reportable segments |  |  | 138,026 | (2,497)
Total depreciation and amortization |  |  | 48,129 | 51,548
Capital expenditures |  |  | 11,954 | 18,616
Total assets for reportable segments |  |  |  | 968,028
PCB Test [Member] |  |  |  |
Net sales |  |  | 26,760 | 50,767
Profit (loss) for reportable segments |  |  | 3,907 | 6,971
Total depreciation and amortization |  |  | 439 | 1,198
Capital expenditures |  |  | $ 46 | 44
Total assets for reportable segments |  |  |  | 66,826
Semiconductor Test and Inspection and PCB Test [Member] |  |  |  |
Total assets for reportable segments |  |  |  | $ 1,034,854
[1] | On June 24, 2021 we completed the divestment of our PCB Test business. The divestment of this business did not qualify for presentation as discontinued operations and the results of the PCB Test business are included in continuing operations for all periods presented. See Note 14, “Business Divestitures and Discontinued Operations” for additional information on this transaction and financial statement presentation.

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