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Note 4 - Restructuring Charges - Charges (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 27, 2025	Dec. 28, 2024	Dec. 30, 2023
Restructuring Charges	$ 10,143	$ 41	$ 2,421
The 2025 Strategic Restructuring [Member]
Restructuring Charges	8,575
Accrued restructuring, balance	1,400
The 2025 Strategic Restructuring [Member] | Employee Severance [Member]
Restructuring Charges	8,300
Accrued restructuring, balance	0
Amounts paid or charged	(6,570)
Impact of currency exchange	402
Accrued restructuring, balance	2,132	0
The 2025 Strategic Restructuring [Member] | Other Restructuring [Member]
Restructuring Charges	153
Accrued restructuring, balance	0
Amounts paid or charged	(129)
Impact of currency exchange	0
Accrued restructuring, balance	24	0
The 2025 Strategic Restructuring [Member] | Inventory Charges [Member]
Restructuring Charges	122
The 2025 Strategic Restructuring [Member] | Employee Severance and Other Exit Costs [Member]
Restructuring Charges	8,453
Accrued restructuring, balance	0
Amounts paid or charged	(6,699)
Impact of currency exchange	402
Accrued restructuring, balance	2,156	0
Poway Volume Manufacturing Transition [Member]
Restructuring Charges	2,313
Poway Volume Manufacturing Transition [Member] | Employee Severance [Member]
Restructuring Charges	1,053
Accrued restructuring, balance	0
Amounts paid or charged	(1,053)
Accrued restructuring, balance	0	0
Poway Volume Manufacturing Transition [Member] | Other Restructuring [Member]
Restructuring Charges	637
Accrued restructuring, balance	0
Amounts paid or charged	(637)
Accrued restructuring, balance	0	0
Poway Volume Manufacturing Transition [Member] | Inventory Charges [Member]
Restructuring Charges	623
Poway Volume Manufacturing Transition [Member] | Employee Severance and Other Exit Costs [Member]
Restructuring Charges	1,690
Accrued restructuring, balance	0
Amounts paid or charged	(1,690)
Accrued restructuring, balance	0	0
MCT Integration Program [Member]
Restructuring Charges			2,421
MCT Integration Program [Member] | Employee Severance [Member]
Restructuring Charges			2,159
Accrued restructuring, balance		68	0
Amounts paid or charged			(2,091)
Accrued restructuring, balance			68
MCT Integration Program [Member] | Other Restructuring [Member]
Restructuring Charges			262
Accrued restructuring, balance		0	0
Amounts paid or charged			(262)
Accrued restructuring, balance			0
MCT Integration Program [Member] | Employee Severance and Other Exit Costs [Member]
Restructuring Charges			2,421
Accrued restructuring, balance		68	0
Amounts paid or charged			(2,353)
Accrued restructuring, balance			68
Xcerra Integration Program [Member]
Restructuring Charges	0	(465)	(62)
Xcerra Integration Program [Member] | Employee Severance [Member]
Restructuring Charges	0	0	0
Xcerra Integration Program [Member] | Other Restructuring [Member]
Restructuring Charges	0	0	0
Xcerra Integration Program [Member] | Inventory Charges [Member]
Restructuring Charges	$ 0	$ (465)	$ (62)

X

- 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/2003/role/disclosureRef
-Topic 420
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
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X

- 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
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-Section 45
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-Subparagraph (b)
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-Topic 230
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
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-Publisher FASB
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Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 220
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-Publisher FASB
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Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 220
-SubTopic 40
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-Section 50
-Paragraph 6
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147476148/220-40-50-6

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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

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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482017/420-10-50-1

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X

- 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 S99
-Paragraph 2
-Subparagraph (SAB Topic 5.P.4.b.2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479823/420-10-S99-2

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