Note 1 - Summary of Significant Accounting Policies (Details Textual) $ in Thousands		3 Months Ended
	Oct. 01, 2024 USD ($)	Mar. 29, 2025 USD ($) shares	Mar. 30, 2024 USD ($) shares	Dec. 28, 2024 USD ($)
Accounts Receivable, Allowance for Credit Loss		$ 200		$ 200
Capitalized Computer Software, Gross		8,600		9,300
Capitalized Computer Software, Amortization		$ 709	$ 709
Number of Operating Segments		3
Number of Reportable Segments		1
Goodwill and Intangible Asset Impairment	$ 0
Realized Gain (Loss), Foreign Currency Transaction, before Tax		$ (100)	$ (500)
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount | shares		701,000	5,000
Revenue, Remaining Performance Obligation, Amount		$ 5,500
Accounts Receivable, Credit Loss Expense (Reversal)		0
Contract with Customer, Asset, after Allowance for Credit Loss		0
Contract with Customer, Liability		13,700		8,600
Deferred Profit		7,077		3,589	[1]
Deferred Profit Long-term		4,100		4,300
Accumulated Other Comprehensive Income (Loss), Net of Tax		$ (44,757)		$ (51,155)	[1]
Computer Software, Intangible Asset [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 28, 2024, audited financial statements