Note 1 - Summary of Significant Accounting Policies (Details Textual) $ in Thousands	3 Months Ended
	Mar. 28, 2026 USD ($) shares	Mar. 29, 2025 USD ($) shares	Dec. 27, 2025 USD ($)
Accounts Receivable, Allowance for Credit Loss	$ 500		$ 100
Capitalized Cost, Software to be Sold, Leased, or Marketed, before Accumulated Amortization	6,300		7,000
Capitalized Cost, Software to be Sold, Leased, or Marketed, Amortization Expense	$ 709	$ 709
Number of Operating Segments	3
Number of Reportable Segments	1
Amortization of Debt Issuance Costs	$ 400
Realized Gain (Loss), Foreign Currency Transaction, before Tax	$ (100)	$ (100)
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount | shares	5,000	701,000
Revenue, Remaining Performance Obligation, Amount	$ 4,900
Accounts Receivable, Credit Loss Expense (Reversal)	0
Contract with Customer, Asset, after Allowance for Credit Loss	0
Contract with Customer, Liability	13,400		15,300
Deferred Profit	7,614		8,626	[1]
Deferred Profit Long-term	3,600		3,700
Accumulated Other Comprehensive Income (Loss), Net of Tax	$ (38,060)		$ (32,470)	[1]
Software, In-Development, Internally Developed, and Purchased [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	7 years
Minimum [Member]
Standard Product Warranty Term (Month)	12 months
Maximum [Member]
Standard Product Warranty Term (Month)	36 months
Building [Member] | Minimum [Member]
Property, Plant, and Equipment, Useful Life	30 years
Building [Member] | Maximum [Member]
Property, Plant, and Equipment, Useful Life	40 years
Building Improvements [Member] | Minimum [Member]
Property, Plant, and Equipment, Useful Life	5 years
Building Improvements [Member] | Maximum [Member]
Property, Plant, and Equipment, Useful Life	15 years
Machinery, Equipment and Software [Member] | Minimum [Member]
Property, Plant, and Equipment, Useful Life	3 years
Machinery, Equipment and Software [Member] | Maximum [Member]
Property, Plant, and Equipment, Useful Life	10 years

[1] Derived from December 27, 2025, audited financial statements