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Note 4 - Balance Sheet Components - Property, Plant and Equipment (Details) - USD ($) $ in Thousands | Oct. 02, 2021 | Jan. 02, 2021
--- | --- | ---
Property, Plant and Equipment, Net | $ 37,261 | $ 39,666
UNITED STATES |  |
Property, Plant and Equipment, Net | 26,589 | 29,440
TAIWAN, PROVINCE OF CHINA |  |
Property, Plant and Equipment, Net | 5,484 | 5,171
PHILIPPINES |  |
Property, Plant and Equipment, Net | 2,928 | 2,912
CHINA |  |
Property, Plant and Equipment, Net | 1,710 | 1,537
JAPAN |  |
Property, Plant and Equipment, Net | 436 | 476
Other [Member] |  |
Property, Plant and Equipment, Net | 114 | 130
Foreign Countries [Member] |  |
Property, Plant and Equipment, Net | $ 10,672 | $ 10,226

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