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Acquisitions (Details 1) - USD ($)
$ in Thousands
Jan. 01, 2022
Feb. 23, 2021
Jan. 02, 2021
Dec. 28, 2019
Business Acquisition [Line Items]        
Goodwill $ 928,358   $ 782,087 $ 661,856
NUMECA        
Business Acquisition [Line Items]        
Current assets   $ 16,423    
Goodwill   133,077    
Acquired intangibles   72,200    
Other long-term assets   6,928    
Total assets acquired   228,628    
Current liabilities   9,951    
Long-term liabilities   20,475    
Total liabilities assumed   30,426    
Total purchase consideration   $ 198,202