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Stock Based Compensation | 9 Months Ended
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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 services | 1,516 |  |  | 1,331 |  |  | 4,190 |  |  | 3,494 |
Marketing and sales | 18,042 |  |  | 14,991 |  |  | 48,819 |  |  | 39,650 |
Research and development | 53,013 |  |  | 43,327 |  |  | 142,142 |  |  | 115,516 |
General and administrative | 14,270 |  |  | 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.

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