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Note 8 - Restructuring (Details Textual) - USD ($) $ in Thousands | 12 Months Ended | 79 Months Ended
--- | --- | ---
Dec. 30, 2023 | Dec. 31, 2022 | Jan. 01, 2022 | Jan. 02, 2021 | Dec. 30, 2023
Restructuring Charges | $ 1,908 | $ 2,551 | $ 940 |  |
Operating Lease, Impairment Loss | 0 | 1,149 | $ 0 |  |
Q3 2023 Plan [Member] |  |  |  |  |
Restructuring and Related Cost, Incurred Cost | 2,000 |  |  |  |
Restructuring and Related Cost, Cost Incurred to Date | 2,000 |  |  |  | $ 2,000
Q2 2019 Sales Plan [Member] |  |  |  |  |
Restructuring and Related Cost, Incurred Cost |  | 1,000 |  |  |
Restructuring and Related Cost, Cost Incurred to Date | 3,100 |  |  |  | 3,100
Restructuring Charges | 0 |  |  | $ 0 |
Q1 2020 Plan [Member] |  |  |  |  |
Restructuring and Related Cost, Incurred Cost | 100 |  |  |  |
June 2017 Plan [Member] |  |  |  |  |
Restructuring and Related Cost, Incurred Cost | $ 700 | 1,600 |  |  | $ 23,300
June 2017 Plan [Member] | San Jose [Member] |  |  |  |  |
Operating Lease, Impairment Loss |  | $ 1,100 |  |  |

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- Definition Amount of loss from impairment of right-of-use asset from operating lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 25 -Paragraph 6 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479365/842-20-25-6 + Details
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- Definition Amount of costs incurred to date for the specified restructuring cost. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 420 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482017/420-10-50-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 420 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.P.4(b)(1)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479823/420-10-S99-2 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 420 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.P.4(d)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479823/420-10-S99-2 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 420 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482017/420-10-50-1 + Details
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- Definition Discloses the amount charged against the accrued restructuring reserves, or earnings if not previously accrued, during the period for the specified type of restructuring cost. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 420 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482017/420-10-50-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 420 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.P.4(b)(1)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479823/420-10-S99-2 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 420 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.P.4(d)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479823/420-10-S99-2 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 420 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482017/420-10-50-1 + Details
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