| Assets and Liabilities Included in Discontinued Operations [Table Text Block] |
| | | June 29, | | | December 29, | |
| | | 2025 | | | 2024 | |
| ASSETS | | | | | | | | |
| Current assets: | | | | | | | | |
| Cash and cash equivalents | | $ | 7 | | | $ | 21 | |
| Accounts receivable, net of allowance for credit losses of $30 and $30, as of June 29, 2025 and December 29, 2024, respectively | | | 7 | | | | 10 | |
| Total current assets | | | 14 | | | | 31 | |
| Capitalized internal-use software, net | | | 1,740 | | | | 1,740 | |
| Intangible assets, net | | | 430 | | | | 430 | |
| Goodwill | | | 185 | | | | 185 | |
| Other assets | | | 1 | | | | 1 | |
| TOTAL ASSETS | | $ | 2,370 | | | $ | 2,387 | |
| | | | | | | | | |
| LIABILITIES | | | | | | | | |
| Current liabilities: | | | | | | | | |
| Trade payables | | $ | 5 | | | $ | 23 | |
| Accrued liabilities | | | — | | | | 24 | |
| Deferred revenue | | | — | | | | 10 | |
| Total current liabilities | | | 5 | | | | 57 | |
| TOTAL LIABILITIES | | $ | 5 | | | $ | 57 | |
| | | June 29, | | | December 29, | |
| | | 2025 | | | 2024 | |
| Capitalized internal-use software, net: | | | | | | | | |
| Capitalized internal-use software | | $ | 3,808 | | | $ | 3,808 | |
| Less: Accumulated amortization | | | (2,068 | ) | | | (2,068 | ) |
| | | $ | 1,740 | | | $ | 1,740 | |
| | | | |
| | | Gross Carrying Amount | | | Accumulated Amortization | | | Net Carrying Amount | |
| Developed technology | | $ | 959 | | | $ | (575 | ) | | $ | 384 | |
| Customer relationships | | | 81 | | | | (81 | ) | | | — | |
| Trade names and trademarks | | | 116 | | | | (70 | ) | | | 46 | |
| Total intangible assets related to discontinued operations | | $ | 1,156 | | | $ | (726 | ) | | $ | 430 | |
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| Disposal Groups, Including Discontinued Operations [Table Text Block] |
| | | Three Months Ended | | | Six Months Ended | |
| | | June 29, | | | June 30, | | | June 29, | | | June 30, | |
| | | 2025 | | | 2024 | | | 2025 | | | 2024 | |
| Revenue | | $ | — | | | $ | 31 | | | $ | 11 | | | $ | 369 | |
| Cost of revenue | | | — | | | | 168 | | | | 3 | | | | 327 | |
| Gross profit | | | — | | | | (137 | ) | | | 8 | | | | 42 | |
| Operating expenses: | | | | | | | | | | | | | | | | |
| Research and development | | | 9 | | | | 180 | | | | 18 | | | | 318 | |
| Selling, general and administrative | | | — | | | | — | | | | 13 | | | | — | |
| Restructuring costs | | | — | | | | — | | | | 87 | | | | — | |
| Interest income and other income (expense), net | | | — | | | | (4 | ) | | | — | | | | (10 | ) |
| Income (loss) from discontinued operations before income taxes | | | (9 | ) | | | (321 | ) | | | (110 | ) | | | (286 | ) |
| (Benefit from) provision for income taxes | | | — | | | | — | | | | — | | | | — | |
| Net income (loss) from discontinued operations | | $ | (9 | ) | | $ | (321 | ) | | $ | (110 | ) | | $ | (286 | ) |
| Net income (loss) from discontinued operations per share: | | | | | | | | | | | | | | | | |
| Basic | | $ | (0.00 | ) | | $ | (0.02 | ) | | $ | (0.01 | ) | | $ | (0.02 | ) |
| Diluted | | $ | (0.00 | ) | | $ | (0.02 | ) | | $ | (0.01 | ) | | $ | (0.02 | ) |
| Weighted average shares outstanding: | | | | | | | | | | | | | | | | |
| Basic | | | 15,884 | | | | 14,439 | | | | 15,677 | | | | 14,308 | |
| Diluted | | | 15,884 | | | | 14,439 | | | | 15,677 | | | | 14,308 | |
| | | Three Months Ended | | | Six Months Ended | |
| | | June 29, 2025 | | | June 30, 2024 | | | June 29, 2025 | | | June 30, 2024 | |
| New products | | $ | — | | | $ | 31 | | | $ | 11 | | | $ | 369 | |
| Total revenue | | $ | — | | | $ | 31 | | | $ | 11 | | | $ | 369 | |
| | | Three Months Ended | | | Six Months Ended | |
| | | June 29, 2025 | | | June 30, 2024 | | | June 29, 2025 | | | June 30, 2024 | |
| Asia Pacific | | $ | — | | | $ | 5 | | | $ | 4 | | | $ | 9 | |
| North America | | | — | | | | 26 | | | | 6 | | | | 360 | |
| Europe | | | — | | | | — | | | | 1 | | | | — | |
| Total revenue | | $ | — | | | $ | 31 | | | $ | 11 | | | $ | 369 | |
| | | Three Months Ended | | | Six Months Ended | |
| | | June 29, | | | June 30, | | | June 29, | | | June 30, | |
| | | 2025 | | | 2024 | | | 2025 | | | 2024 | |
| Customer "L" | | | * | | | | 83 | % | | | 50 | % | | | 97 | % |
| Customer "O" | | | * | | | | * | | | | 34 | % | | | * | |
| | | June 29, | | | December 29, | |
| | | 2025 | | | 2024 | |
| Customer "L" | | | 34 | % | | | 34 | % |
| Customer "M" | | | 65 | % | | | 65 | % |
| | | Three Months Ended | | | Six Months Ended | |
| | | June 29, 2025 | | | June 30, 2024 | | | June 29, 2025 | | | June 30, 2024 | |
| Operating lease costs from discontinued operations: | | | | | | | | | | | | | | | | |
| Fixed | | $ | — | | | $ | 4 | | | $ | 4 | | | $ | 8 | |
| Total | | $ | — | | | $ | 4 | | | $ | 4 | | | $ | 8 | |
| | | Three Months Ended | | | Six Months Ended | |
| | | June 29, 2025 | | | June 30, 2024 | | | June 29, 2025 | | | June 30, 2024 | |
| Cost of revenue | | $ | — | | | $ | — | | | $ | — | | | $ | — | |
| Research and development | | | — | | | | 94 | | | | (32 | ) | | | 252 | |
| Selling, general and administrative | | | — | | | | — | | | | — | | | | — | |
| Total | | $ | — | | | $ | 94 | | | $ | (32 | ) | | $ | 252 | |
| | | Six Months Ended | |
| | | June 29, | | | June 30, | |
| | | 2025 | | | 2024 | |
| Net cash provided by (used in) operating activities from discontinued operations | | $ | (192 | ) | | $ | (14 | ) |
| Net cash provided by (used in) investing activities from discontinued operations | | | - | | | | (310 | ) |
| Net cash provided by (used in) financing activities from discontinued operations | | | 178 | | | | 362 | |
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