Note 2 - Significant Accounting Policies (Details Textual) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | |||
|---|---|---|---|---|---|
Jun. 28, 2026 |
Jun. 29, 2025 |
Jun. 28, 2026 |
Jun. 29, 2025 |
Dec. 28, 2025 |
|
| Equity Method Investment, Other-than-Temporary Impairment | $ 0 | $ 300 | |||
| Accounts Receivable, Allowance for Credit Loss | $ 100 | 100 | $ 0 | ||
| Accounts Receivable, Credit Loss Expense (Reversal) | 100 | $ 0 | 125 | 0 | |
| Defined Contribution Plan, Cost | $ 100 | $ 50 | $ 100 | $ 100 | |
| X | ||||||||||
- Definition Amount of allowance for credit loss on accounts receivable. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of cost for defined contribution plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of other-than-temporary decline in value that has been recognized against investment accounted for under equity method of accounting. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Amount of expense (reversal of expense) for expected credit loss on accounts receivable. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|