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Accumulated Other Comprehensive Income (Tables) | 12 Months Ended
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Dec. 31, 2022
Equity [Abstract] |
Schedule Of Accumulated Other Comprehensive Income | ​
​ | ​ | ​ | ​
​ | ​ | Unrealized Gains (Losses)
​ | ​ | on Available-for-Sale
(amounts in thousands) |  | Marketable Securities
Accumulated other comprehensive income (loss) balance as of December 26, 2020 | ​ | $ | 3,286
Other comprehensive income (loss) | ​ | ​ | (1,599)
Net current period other comprehensive income (loss) | ​ | ​ | (1,599)
Accumulated other comprehensive income (loss) balance as of December 25, 2021 | ​ | $ | 1,687
Other comprehensive income (loss) | ​ | ​ | (8,135)
Net current period other comprehensive income (loss) | ​ | ​ | (8,135)
Accumulated other comprehensive income (loss) balance as of December 31, 2022 | ​ | $ | (6,449)
​

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 50 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=6450520&loc=d3e32583-110901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI https://asc.fasb.org/extlink&oid=126968391&loc=SL7669686-108580 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 45 -Paragraph 20 -URI https://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900 + Details
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