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Stock Based Compensation
 9 Months Ended
Sep. 30, 2023
Share-Based Payment Arrangement [Abstract]  
STOCK-BASED COMPENSATION STOCK-BASED COMPENSATION
Stock-based compensation expense is reflected in Cadence’s condensed consolidated income statements for the three and nine months ended September 30, 2023 and October 1, 2022 as follows:
Three Months Ended Nine Months Ended
September 30,
2023		October 1,
2022		September 30,
2023		October 1,
2022
(In thousands)
Cost of product and maintenance$1,191 $1,046 $3,292 $2,751 
Cost of services1,516 1,331 4,190 3,494 
Marketing and sales18,042 14,991 48,819 39,650 
Research and development53,013 43,327 142,142 115,516 
General and administrative14,270 12,756 40,485 35,779 
Total stock-based compensation expense$88,032 $73,451 $238,928 $197,190 
Cadence had total unrecognized compensation expense related to stock option and restricted stock grants of $621.5 million as of September 30, 2023, which will be recognized over a weighted average vesting period of 2.0 years.