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Stock-Based Compensation
 9 Months Ended
Oct. 03, 2021
Share-based Payment Arrangement [Abstract]  
Stock-Based Compensation STOCK-BASED COMPENSATION
The following table summarizes the consolidated stock-based compensation expense by line item in our unaudited condensed consolidated statements of operations:

 Three Months EndedNine Months Ended
(In thousands)October 3, 2021September 27, 2020October 3, 2021September 27, 2020
Cost of revenues$1,049 $968 $3,021 $2,154 
Research and development 624 38 2,450 575 
Sales, general, and administrative 3,053 3,448 14,305 10,657 
Total stock-based compensation expense$4,726 $4,454 $19,776 $13,386