Note 10 - Stock-Based Compensation Plans - Share-based Payment Award Stock Options Valuation Assumptions (Details) |
12 Months Ended | ||
|---|---|---|---|
Jan. 03, 2026 |
Dec. 28, 2024 |
Dec. 30, 2023 |
|
| Expected term (in months) (Month) | 3 years | 3 years | |
| Employee Stock Purchase Plan [Member] | |||
| Weighted average expected volatility | 41.60% | 52.60% | 48.20% |
| Weighted average risk-free interest rate | 3.95% | 4.88% | 5.37% |
| Expected term (in months) (Month) | 6 months | 6 months | 6 months |