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Note 1 - Summary of Significant Accounting Policies - Disaggregation of Revenue (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 28, 2024 | Sep. 30, 2023 | Sep. 28, 2024 | Sep. 30, 2023
Net sales | $ 95,342 | $ 150,804 | $ 307,657 | $ 499,096
UNITED STATES |  |  |  |
Net sales | 16,512 | 23,604 | 48,327 | 58,097
CHINA |  |  |  |
Net sales | 12,770 | 19,689 | 43,586 | 69,193
Malaysia [Member] |  |  |  |
Net sales | 12,223 | 23,550 | 42,913 | 78,703
SINGAPORE |  |  |  |
Net sales | 9,051 | 13,693 | 34,044 | 38,387
PHILIPPINES |  |  |  |
Net sales | 10,451 | 19,983 | 32,001 | 77,132
Rest of the World [Member] |  |  |  |
Net sales | 34,335 | 50,285 | 106,786 | 177,584
Systems [Member] |  |  |  |
Net sales | 31,102 | 73,173 | 103,685 | 263,469
Non-systems [Member] |  |  |  |
Net sales | $ 64,240 | $ 77,631 | $ 203,972 | $ 235,627

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