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Stock-based Compensation and Stockholders' Equity (Tables) | 3 Months Ended
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Aug. 27, 2023
Share-Based Payment Arrangement [Abstract] |
Share-Based Payment Arrangement, Activity | A summary of the activity under the Company’s stock option plans as of August 27, 2023 and changes during the fiscal year then ended is presented below:
| Options Outstanding |  | Weighted-Average Exercise Price Per Share |  | Total Intrinsic Value of Options Exercised (in thousands) |  | Weighted-Average Remaining Contractual Term in Years |  | Aggregate Intrinsic Value
Options outstanding at May 28, 2023 | 2,374,325 |  |  | $ | 10.88 |  |  |  |  |  |  |
Granted | 2,100 |  |  | $ | 10.48 |  |  |  |  |  |  |
Exercised | (95,800) |  |  | $ | 9.38 |  |  | $ | 115 |  |  |  |  |
Expired | (119,850) |  |  | $ | 11.79 |  |  |  |  |  |  |
Options outstanding at August 27, 2023 | 2,160,775 |  |  | $ | 10.89 |  |  |  |  | 4.16 |  | $ | — |
Options exercisable at August 27, 2023 | 1,506,237 |  |  | $ | 10.96 |  |  |  |  | 3.49 |  | $ | — |
A summary of the Company’s restricted stock unit (“RSU”) award activity as of August 27, 2023 and changes during the fiscal year then ended is presented below:
| Restricted Stock Units Outstanding |  | Weighted-Average Grant Date Fair Value Per Share
Restricted stock units outstanding at May 28, 2023 | 336,791 |  |  | $ | 9.70 |
Granted | 1,057,656 |  |  | $ | 8.25 |
Vested | (56,844) |  |  | $ | 9.50 |
Restricted stock units outstanding at August 27, 2023 | 1,337,603 |  |  | $ | 8.56 |
Schedule of Employee Service Share-based Compensation, Allocation of Recognized Period Costs | The following table summarizes stock-based compensation by income statement line item:
| Three Months Ended |  |
(In thousands) | August 27, 2023 |  | August 28, 2022 |  |  |  |
Continuing operations: |  |  |  |  |  |  |
Cost of goods sold | $ | 184 |  |  | $ | 101 |  |  |  |  |
Research and development | 43 |  |  | 90 |  |  |  |  |
Selling, general and administrative | 1,306 |  |  | 594 |  |  |  |  |
Total stock-based compensation | $ | 1,533 |  |  | $ | 785 |  |  |  |  |

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