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Note 2 - Goodwill and Purchased Intangible Assets (Details Textual) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2022 | Dec. 25, 2021 | Dec. 31, 2022 | Dec. 25, 2021 | Dec. 26, 2020
Goodwill, Impairment Loss | $ 0 |  |  |  |
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill) |  |  | $ 0 | $ 100 | $ 11,249
Amortization of Intangible Assets |  |  | 33,185 | $ 35,414 | $ 38,746
Finite-Lived Intangible Asset, Expected Amortization, Year One | 33,400 |  | 33,400 |  |
Finite-Lived Intangible Asset, Expected Amortization, Year Two | 33,400 |  | 33,400 |  |
Finite-Lived Intangible Asset, Expected Amortization, Year Three | 24,800 |  | 24,800 |  |
Finite-Lived Intangible Asset, Expected Amortization, Year Four | 18,600 |  | 18,600 |  |
Finite-Lived Intangible Asset, Expected Amortization, Year Five | 15,100 |  | 15,100 |  |
Finite-Lived Intangible Asset, Expected Amortization, after Year Five | $ 14,800 |  | $ 14,800 |  |
Indefinite-lived In Process Research and Development [Member] |  |  |  |  |
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill) |  | $ 100 |  |  |

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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI https://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 + Details
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