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Acquisitions (Details 1) - USD ($) $ in Thousands | Apr. 03, 2021 | Feb. 23, 2021 | Jan. 02, 2021
--- | --- | --- | ---
Business Acquisition [Line Items] |  |  |
Goodwill | $ 912,603 |  | $ 782,087
NUMECA |  |  |
Business Acquisition [Line Items] |  |  |
Current assets |  | $ 16,423 |
Goodwill |  | 133,326 |
Acquired intangibles |  | 72,200 |
Other long-term assets |  | 6,928 |
Total assets acquired |  | 228,877 |
Current liabilities |  | 9,951 |
Long-term liabilities |  | 20,091 |
Total liabilities assumed |  | 30,042 |
Total purchase consideration |  | $ 198,835 |

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