Note 5 - Balance Sheet Components (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 |
|
| Preproduction Costs Related to Long-term Supply Arrangements, Costs Capitalized in Period | $ 600 | $ 1,800 | $ 800 | $ 4,100 | |
| Depreciation, Amortization and Accretion, Net | 3,146 | 2,572 | |||
| Interest Costs Capitalized | 0 | 0 | 0 | 0 | |
| Capitalized Cost, Software to be Sold, Leased, or Marketed, Amortization Expense | 67 | 39 | 126 | 70 | |
| Continuing Operations [Member] | |||||
| Depreciation, Amortization and Accretion, Net | 1,600 | $ 1,300 | 3,100 | $ 2,600 | |
| Die Wafers [Member] | |||||
| Inventory, Work in Process, Gross | 100 | 100 | $ 100 | ||
| Unmarked Devices [Member] | |||||
| Inventory, Work in Process, Gross | $ 800 | $ 800 | $ 800 | ||