Income Taxes (Schedule of Deferred Income Taxes) (Details) - USD ($) $ in Thousands	Dec. 27, 2024	Dec. 29, 2023
Deferred Tax Assets, Net [Abstract]
Inventory valuations	$ 3,456	$ 1,005
Accrued self-insurance retentions	1,187	1,390
Accrued warranty and service liabilities	2,392	2,290
Vacation accruals	3,409	3,450
Customer allowances	4,080	4,137
Excess of tax over book depreciation and amortization	(79,728)	(44,197)
Pension benefit obligation	915	10,063
Postretirement medical benefit obligation	5,002	5,039
Acquisition costs	442	0
Stock compensation	12,634	12,686
Deferred compensation	5,305	2,205
Deferred revenue	927	2,024
Deferred Tax Asset, In-Process Research and Development	31,543	23,324
Prepayments from foreign subsidiaries	13,872	27,301
Other	3,652	2,449
Net deferred tax assets	$ 9,088	$ 53,166

Deferred Tax Assets, Acquisition Costs

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from deferred income.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-6

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Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary difference from in-process research and development cost acquired in business combination or from joint venture formation or both.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from inventory.

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Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, without jurisdictional netting.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-2

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from compensated absences (includes, but not limited to, sick and personal days).

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from employee compensation.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from pension benefits.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from postretirement benefits.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from share-based compensation.

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- Definition

Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary differences from provisions, reserves, allowances, and accruals, classified as other.

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Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary difference from allowance for credit loss on accounts receivable.

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Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary differences from reserves and accruals, classified as other.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from estimated losses under self insurance.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from warranty reserves.

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- Definition

Amount of deferred tax liability attributable to taxable temporary differences from property, plant, and equipment.

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