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Note 1 - Summary of Significant Accounting Policies - Disaggregation of Revenue (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 28, 2025 | Jun. 29, 2024 | Jun. 28, 2025 | Jun. 29, 2024
Net sales | $ 107,680 | $ 104,701 | $ 204,477 | $ 212,315
CHINA |  |  |  |
Net sales | 16,971 | 19,072 | 31,099 | 30,816
MALAYSIA |  |  |  |
Net sales | 10,847 | 13,791 | 29,009 | 30,690
PHILIPPINES |  |  |  |
Net sales | 15,803 | 9,708 | 28,989 | 21,550
TAIWAN |  |  |  |
Net sales | 22,581 | 6,242 | 28,868 | 11,431
UNITED STATES |  |  |  |
Net sales | 7,988 | 17,173 | 16,744 | 31,815
SINGAPORE |  |  |  |
Net sales | 5,258 | 12,929 | 10,135 | 24,993
Rest of the World [Member] |  |  |  |
Net sales | 28,232 | 25,786 | 59,633 | 61,020
Systems [Member] |  |  |  |
Net sales | 39,643 | 35,272 | 75,285 | 72,583
Non-systems [Member] |  |  |  |
Net sales | $ 68,037 | $ 69,429 | $ 129,192 | $ 139,732

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