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Stock-based Compensation and Stockholders' Equity (Tables) | 9 Months Ended
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Feb. 27, 2022
Share-based Payment Arrangement [Abstract] |
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 |  | Nine Months Ended
(In thousands) | February 27, 2022 |  | February 28, 2021 |  | February 27, 2022 |  | February 28, 2021
Continuing operations: |  |  |  |  |  |  |
Cost of product sales | $ | 83 |  |  | $ | 141 |  |  | 177 |  |  | $ | 262 |
Research and development | 51 |  |  | 49 |  |  | 151 |  |  | 175 |
Selling, general and administrative | 488 |  |  | 641 |  |  | 1,575 |  |  | 2,120 |
Discontinued Operations: |  |  |  |  |  |  |
Cost of product sales | — |  |  | (34) |  |  | 25 |  |  | 27 |
Total stock-based compensation | $ | 622 |  |  | $ | 797 |  |  | $ | 1,928 |  |  | $ | 2,584 |

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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 http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=122041274&loc=d3e301413-122809 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5047-113901 + Details
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