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Note 1 - Summary of Significant Accounting Policies (Details Textual) $ in Thousands |  | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | ---
Oct. 01, 2024 USD ($) | Jun. 28, 2025 USD ($) shares | Jun. 29, 2024 USD ($) shares | Jun. 28, 2025 USD ($) shares | Jun. 29, 2024 USD ($) shares | Dec. 28, 2024 USD ($)
Accounts Receivable, Allowance for Credit Loss |  | $ 100 |  | $ 100 |  | $ 200 |
Capitalized Computer Software, Gross |  | 8,000 |  | 8,000 |  | 9,300 |
Capitalized Computer Software, Amortization |  | 700 | $ 700 | $ 1,418 | $ 1,418 |  |
Number of Operating Segments |  |  |  | 3 |  |  |
Number of Reportable Segments |  |  |  | 1 |  |  |
Goodwill and Intangible Asset Impairment | $ 0 |  |  |  |  |  |
Realized Gain (Loss), Foreign Currency Transaction, before Tax |  | $ (400) | $ (400) | $ (400) | $ (900) |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount | shares |  | 574,000 | 538,000 | 638,000 | 272,000 |  |
Revenue, Remaining Performance Obligation, Amount |  | $ 4,700 |  | $ 4,700 |  |  |
Accounts Receivable, Credit Loss Expense (Reversal) |  |  |  | 0 |  |  |
Contract with Customer, Asset, after Allowance for Credit Loss |  | 0 |  | 0 |  |  |
Contract with Customer, Liability |  | 12,200 |  | 12,200 |  | 8,600 |
Deferred Profit |  | 6,630 |  | 6,630 |  | 3,589 | [1]
Deferred Profit Long-term |  | 4,000 |  | 4,000 |  | 4,300 |
Accumulated Other Comprehensive Income (Loss), Net of Tax |  | $ (32,636) |  | $ (32,636) |  | $ (51,155) | [1]
Computer Software, Intangible Asset [Member] |  |  |  |  |  |  |
Finite-Lived Intangible Asset, Useful Life (Year) |  | 7 years |  | 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 |  | 30 years |  |  |
Building [Member] | Maximum [Member] |  |  |  |  |  |  |
Property, Plant and Equipment, Useful Life |  | 40 years |  | 40 years |  |  |
Building Improvements [Member] | Minimum [Member] |  |  |  |  |  |  |
Property, Plant and Equipment, Useful Life |  | 5 years |  | 5 years |  |  |
Building Improvements [Member] | Maximum [Member] |  |  |  |  |  |  |
Property, Plant and Equipment, Useful Life |  | 15 years |  | 15 years |  |  |
Machinery, Equipment and Software [Member] | Minimum [Member] |  |  |  |  |  |  |
Property, Plant and Equipment, Useful Life |  | 3 years |  | 3 years |  |  |
Machinery, Equipment and Software [Member] | Maximum [Member] |  |  |  |  |  |  |
Property, Plant and Equipment, Useful Life |  | 10 years |  | 10 years |  |  |
[1] | Derived from December 28, 2024, audited financial statements

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