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Goodwill and Intangible Assets - Intangible Assets (Details) - USD ($) $ in Thousands	Jun. 26, 2021	Dec. 26, 2020
Finite-Lived Intangible Assets [Line Items]
Gross	$ 235,798	$ 239,542
Accumulated Amortization	193,885	180,395
Net	41,913	59,147
Developed technologies
Finite-Lived Intangible Assets [Line Items]
Gross	173,627	176,265
Accumulated Amortization	147,968	137,754
Net	25,659	38,511
Trade names
Finite-Lived Intangible Assets [Line Items]
Gross	8,140	8,162
Accumulated Amortization	7,520	7,363
Net	620	799
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross	51,641	52,488
Accumulated Amortization	36,437	33,378
Net	15,204	19,110
Order backlog
Finite-Lived Intangible Assets [Line Items]
Gross	1,990	2,227
Accumulated Amortization	1,960	1,900
Net	30	327
In-process research and development
Finite-Lived Intangible Assets [Line Items]
Gross	400	400
Accumulated Amortization	0	0
Net	$ 400	$ 400

X

- 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 http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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Amount before 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 928
-SubTopic 340
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6473545&loc=d3e61844-108004

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 926
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