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Note 2 - Goodwill and Purchased Intangible Assets (Tables) | 6 Months Ended
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Jun. 25, 2022
Notes Tables |
Schedule of Goodwill [Table Text Block] |
|  | Semiconductor Test |  |  |  |  |  |  |  |  |
|  | & Inspection |  |  | PCB Test |  |  | Total |
Balance, December 26, 2020 |  | $ | 230,724 |  |  | $ | 21,580 |  |  | $ | 252,304 |
Sale of PCB Test Business (1) |  |  | - |  |  |  | (21,899 | ) |  |  | (21,899 | )
Impact of currency exchange |  |  | (10,933 | ) |  |  | 319 |  |  |  | (10,614 | )
Balance, December 25, 2021 |  |  | 219,791 |  |  |  | - |  |  |  | 219,791 |
Impact of currency exchange |  |  | (8,257 | ) |  |  | - |  |  |  | (8,257 | )
Balance, June 25, 2022 |  | $ | 211,534 |  |  | $ | - |  |  | $ | 211,534 |
Schedule of Finite-Lived and Indefinite-Lived Intangible Assets [Table Text Block] |
|  | June 25, 2022 |  |  | December 25, 2021 |
|  |  |  |  |  |  |  |  |  | Remaining |  |  |  |  |  |  |  |  |
|  |  |  |  |  |  |  |  |  | Weighted |  |  |  |  |  |  |  |  |
|  | Gross |  |  |  |  |  |  | Average |  |  | Gross |  |  |  |  |
|  | Carrying |  |  | Accum. |  |  | Amort. |  |  | Carrying |  |  | Accum. |
|  | Amount |  |  | Amort. |  |  | Period (in years) |  |  | Amount |  |  | Amort. |
Developed technology |  | $ | 222,240 |  |  | $ | 114,503 |  |  |  | 4 |  |  | $ | 229,131 |  |  | $ | 104,855 |
Customer relationships |  |  | 64,027 |  |  |  | 27,939 |  |  |  | 7 |  |  |  | 65,916 |  |  |  | 26,189 |
Trade names |  |  | 20,220 |  |  |  | 8,366 |  |  |  | 6.8 |  |  |  | 20,877 |  |  |  | 7,714 |
Covenant not-to-compete |  |  | 261 |  |  |  | 143 |  |  |  | 4.5 |  |  |  | 308 |  |  |  | 154 |
Total intangible assets |  | $ | 306,748 |  |  | $ | 150,951 |  |  |  |  |  |  | $ | 316,232 |  |  | $ | 138,912 |

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