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Goodwill and Intangible Assets - Intangible Assets (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 25, 2021
--- | --- | ---
Finite-Lived Intangible Assets [Line Items] |  |
Gross | $ 230,725 | $ 233,879
Accumulated Amortization | 203,974 | 197,537
Net | 26,751 | 36,342
Existing developed technologies |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross | 171,441 | 172,259
Accumulated Amortization | 151,212 | 148,784
Net | 20,229 | 23,475
Trade name |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross | 7,972 | 8,054
Accumulated Amortization | 7,759 | 7,603
Net | 213 | 451
Customer relationships |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross | 50,912 | 51,270
Accumulated Amortization | 45,003 | 39,254
Net | 5,909 | 12,016
Backlog |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross | 0 | 1,896
Accumulated Amortization | 0 | 1,896
Net | 0 | 0
In-process research and development |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross | 400 | 400
Accumulated Amortization | 0 | 0
Net | $ 400 | $ 400

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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI https://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(16)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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