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Stockholders’ Equity and Stock-Based Compensation (Tables) | 6 Months Ended
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Jun. 25, 2022
Equity [Abstract] |
Schedule of Restricted Stock Unit Activity | Restricted stock unit (“RSU”) activity under our equity incentive plan was as follows:
| Units |  | Weighted Average Grant Date Fair Value
RSUs at December 25, 2021 | 2,166,934 |  |  | $ | 28.63 |
Awards granted | 63,697 |  |  | 41.25 |
Awards vested | (338,825) |  |  | 16.73 |
Awards forfeited | (51,941) |  |  | 30.23 |
RSUs at June 25, 2022 | 1,839,865 |  |  | 31.22 |
Schedule of ESPP Activity | Information related to activity under our Employee Stock Purchase Plan (“ESPP”) was as follows:
|  | Six Months Ended
|  | June 25, 2022
Shares issued |  | 157,642 |
Weighted average per share purchase price |  | $ | 35.81 |
Weighted average per share discount from the fair value of our common stock on the date of issuance |  | $ | (6.93) |
Schedule of Stock-based Compensation | Stock-based compensation was included in our Condensed Consolidated Statements of Income as follows (in thousands):
| Three Months Ended |  | Six Months Ended
| June 25, 2022 |  | June 26, 2021 |  | June 25, 2022 |  | June 26, 2021
Cost of revenues | $ | 734 |  |  | $ | 1,079 |  |  | $ | 1,812 |  |  | $ | 2,414 |
Research and development | 1,695 |  |  | 1,663 |  |  | 3,681 |  |  | 3,352 |
Selling, general and administrative | 3,929 |  |  | 3,846 |  |  | 8,385 |  |  | 7,899 |
Total stock-based compensation | $ | 6,358 |  |  | $ | 6,588 |  |  | $ | 13,878 |  |  | $ | 13,665 |
Schedule of Unrecognized Stock-based Compensation | At June 25, 2022, the unrecognized stock-based compensation was as follows (dollars in thousands):
| Unrecognized Expense |  | Average Expected Recognition Period in Years
Restricted stock units | $ | 27,430 |  |  | 1.80
Performance restricted stock units | 7,202 |  |  | 1.74
Employee stock purchase plan | 285 |  |  | 0.61
Total unrecognized stock-based compensation expense | $ | 34,917 |  |  | 1.77

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- Definition Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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