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Note 4 - Restructuring Charges - Charges (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 27, 2026 | Jun. 28, 2025 | Jun. 27, 2026 | Jun. 28, 2025
Restructuring Charges | $ 633 | $ 1,210 | $ 1,404 | $ 7,838
Poway Volume Manufacturing Transition [Member] |  |  |  |
Accrued restructuring, balance |  |  |  | 0
Restructuring Charges |  |  |  | 1,224
Amounts paid or charged |  |  |  | (583)
Accrued restructuring, balance |  | 641 |  | 641
Poway Volume Manufacturing Transition [Member] | Employee Severance [Member] |  |  |  |
Accrued restructuring, balance |  |  |  | 0
Restructuring Charges |  |  |  | 766
Amounts paid or charged |  |  |  | (243)
Accrued restructuring, balance |  | 523 |  | 523
Poway Volume Manufacturing Transition [Member] | Other Restructuring [Member] |  |  |  |
Accrued restructuring, balance |  |  |  | 0
Restructuring Charges |  |  |  | 458
Amounts paid or charged |  |  |  | (340)
Accrued restructuring, balance |  | 118 |  | 118
2025 Strategic Restructuring [Member] |  |  |  |
Accrued restructuring, balance |  |  | 2,132 | 0
Restructuring Charges |  |  | 1,403 | 6,615
Amounts paid or charged |  |  | (3,196) | (4,610)
Accrued restructuring, balance | 338 | 2,409 | 338 | 2,409
Impact of currency exchange |  |  | (1) | 404
2025 Strategic Restructuring [Member] | Employee Severance [Member] |  |  |  |
Accrued restructuring, balance |  |  | 2,132 | 0
Restructuring Charges |  |  | 774 | 6,559
Amounts paid or charged |  |  | (2,567) | (4,554)
Accrued restructuring, balance | 338 | 2,409 | 338 | 2,409
Impact of currency exchange |  |  | (1) | 404
2025 Strategic Restructuring [Member] | Other Restructuring [Member] |  |  |  |
Accrued restructuring, balance |  |  | 0 | 0
Restructuring Charges |  |  | 629 | 56
Amounts paid or charged |  |  | (629) | (56)
Accrued restructuring, balance | $ 0 | $ 0 | 0 | 0
Impact of currency exchange |  |  | $ 0 | $ 0

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- Definition Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 17 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-17 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 420 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482017/420-10-50-1 + Details
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- Definition Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 28 -Subparagraph (b) -SubTopic 10 -Topic 230 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-28 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 220 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 18 -Publisher FASB -URI https://asc.fasb.org/1943274/2147476153/220-40-55-18 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.b.1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479823/420-10-S99-2 Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 420 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482047/420-10-45-3 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 420 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 5.P.3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479823/420-10-S99-1 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 21 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org/1943274/2147476148/220-40-50-21 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147476148/220-40-50-6 + Details
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- Definition Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan. + References Reference 1: 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.2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479823/420-10-S99-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 420 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482017/420-10-50-1 + Details
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- Definition Amount of foreign currency translation gain (loss) which decreases (increases) the restructuring reserve. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 420 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482017/420-10-50-1 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 420 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.P.4.b.2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479823/420-10-S99-2 + Details
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