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Stock Based Compensation | 3 Months Ended
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Apr. 03, 2021
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 months ended April 3, 2021 and March 28, 2020 as follows:
|  |  | Three Months Ended
|  |  |  |  | April 3, 2021 |  | March 28, 2020
|  |  |  |  | (In thousands)
Cost of product and maintenance |  |  |  |  | $ | 807 |  |  | $ | 691 |
Cost of services |  |  |  |  | 1,027 |  |  | 880 |
Marketing and sales |  |  |  |  | 11,206 |  |  | 10,011 |
Research and development |  |  |  |  | 32,858 |  |  | 29,346 |
General and administrative |  |  |  |  | 6,698 |  |  | 5,554 |
Total stock-based compensation expense |  |  |  |  | $ | 52,596 |  |  | $ | 46,482 |
Cadence had total unrecognized compensation expense related to stock option and restricted stock grants of $321.8 million as of April 3, 2021, which will be recognized over the remaining vesting period. The remaining weighted-average vesting period of unvested awards is 2.1 years.

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- Definition The entire disclosure for share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -URI http://asc.fasb.org/topic&trid=2228938 + Details
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