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Note 6 - Employee Benefit Plans - Net Periodic Benefit Cost of Swiss Plan (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 27, 2025	Dec. 28, 2024	Dec. 30, 2023
Curtailment	$ (2,159)	$ 0	$ 0
Swiss Plan [Member]
Service cost	603	643	551
Interest cost	244	357	510
Expected return on assets	(236)	(283)	(331)
Curtailment	(2,159)	0	0
Settlements	(1,813)	(277)	(177)
Net periodic costs	$ (3,361)	$ 440	$ 553

X

- Definition

Amount of expected return (loss) recognized in net periodic benefit (cost) credit, calculated based on expected long-term rate of return and market-related value of plan assets of defined benefit plan.

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Amount of cost recognized for passage of time related to defined benefit plan.

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Amount of net periodic benefit cost (credit) for defined benefit plan.

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Amount of gain (loss) recognized in net periodic benefit (cost) credit from event reducing expected years of future service of present employees or eliminating accrual of defined benefits for some or all future services of present employees.

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