Note 9 - Segment Reporting (Tables)
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12 Months Ended |
Dec. 31, 2025 |
| Notes Tables |
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| Schedule of Segment Reporting Information, by Segment [Table Text Block] |
| | | For the Years Ended December 31, | |
| | | 2025 | | | 2024 | | | % Change | |
| Revenue | | | | | | | | | | | | |
| Digital Assets | | $ | 186 | | | $ | — | | | | 100 | % |
| Managed Services | | | 1,957 | | | | 2,062 | | | | (5 | )% |
| Collaboration Products | | | 294 | | | | 316 | | | | (7 | )% |
| Consolidated | | $ | 2,437 | | | $ | 2,378 | | | | 2 | % |
| | | | | | | | | | | | | |
| Cost of revenues | | | | | | | | | | | | |
| Digital Assets | | $ | 24 | | | $ | — | | | | 100 | % |
| Managed Services | | | 1,384 | | | | 1,337 | | | | 4 | % |
| Collaboration Products | | | 15 | | | | 710 | | | | (98 | )% |
| Consolidated | | $ | 1,423 | | | $ | 2,047 | | | | (30 | )% |
| | | | | | | | | | | | | |
| Gross Margin | | | | | | | | | | | | |
| Digital Assets | | $ | 162 | | | $ | — | | | | 100 | % |
| Managed Services | | | 573 | | | | 725 | | | | (21 | )% |
| Collaboration Products | | | 279 | | | | (394 | ) | | | (171 | )% |
| Consolidated | | $ | 1,014 | | | $ | 331 | | | | 206 | % |
| | | | | | | | | | | | | |
| Operating expenses | | | | | | | | | | | | |
| Digital Assets (1) | | $ | 209 | | | $ | — | | | | 100 | % |
| Managed Services (2) | | | — | | | | — | | | | 0 | % |
| Collaboration Products (3) | | | 11 | | | | 341 | | | | (97 | )% |
| Corporate (4) | | | 3,756 | | | | 4,192 | | | | (10 | )% |
| Consolidated | | $ | 3,976 | | | $ | 4,533 | | | | (12 | )% |
| | | | | | | | | | | | | |
| Other income (expense), net | | | | | | | | | | | | |
| Digital Assets (5) | | $ | (3,519 | ) | | $ | — | | | | (100 | )% |
| Managed Services (6) | | | — | | | | (1 | ) | | | (100 | )% |
| Collaboration Products (6) | | | — | | | | 16 | | | | 100 | % |
| Corporate (7) | | | 128 | | | | 154 | | | | (17 | )% |
| Consolidated | | $ | (3,391 | ) | | $ | 169 | | | | (2107 | )% |
| Net loss before taxes | | $ | (6,353 | ) | | $ | (4,033 | ) | | | 58 | % |
| Income tax expense | | $ | 2 | | | $ | 10 | | | | (80 | )% |
| Net loss | | $ | (6,355 | ) | | $ | (4,043 | ) | | | 57 | % |
| | | | | | | | | | | | | |
| | | As of December 31, | |
| Total assets | | 2025 | | | 2024 | | | % Change | |
| Digital Assets (8) | | $ | 5,562 | | | $ | — | | | | 100 | % |
| Managed Services (9) | | | 401 | | | | 422 | | | | (5 | )% |
| Collaboration Products (10) | | | 258 | | | | 285 | | | | (9 | )% |
| Corporate (11) | | | 1,998 | | | | 4,568 | | | | (56 | )% |
| Consolidated | | $ | 8,219 | | | $ | 5,275 | | | | 56 | % |
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| Disaggregation of Revenue [Table Text Block] |
| | | Year Ended December 31, 2025 | |
| | | Digital Assets | | | Managed Services | | | Collaboration Products | | | Total | |
| | | | | | | | | | | | | | | | | |
| Revenue | | | | | | | | | | | | | | | | |
| Digital Assets | | $ | 186 | | | $ | — | | | $ | — | | | $ | 186 | |
| Network Services | | | — | | | | 1,898 | | | | — | | | | 1,898 | |
| Video Collaboration | | | — | | | | 44 | | | | 294 | | | | 338 | |
| Professional and other services | | | — | | | | 15 | | | | — | | | | 15 | |
| Total revenue | | | 186 | | | | 1,957 | | | | 294 | | | | 2,437 | |
| | | | | | | | | | | | | | | | | |
| Significant Segment Expenses | | | | | | | | | | | | | | | | |
| Labor and labor-related (1) | | | — | | | | 261 | | | | 19 | | | | 280 | |
| Property and office expense | | | — | | | | — | | | | 21 | | | | 21 | |
| Cash digital asset transaction fees | | | 16 | | | | — | | | | — | | | | 16 | |
| Non-cash digital asset transaction fees | | | 8 | | | | — | | | | — | | | | 8 | |
| Stock-based expense | | | 169 | | | | — | | | | — | | | | 169 | |
| Circuit and network cost of revenue | | | — | | | | 1,123 | | | | — | | | | 1,123 | |
| Advisory fees | | | 40 | | | | — | | | | — | | | | 40 | |
| Unrealized loss on digital asset revaluation | | | 3,519 | | | | — | | | | — | | | | 3,519 | |
| Bad debt recovery | | | — | | | | — | | | | (18 | ) | | | (18 | ) |
| Other segment items (2) | | | — | | | | — | | | | 4 | | | | 4 | |
| Segment profit (loss) | | $ | (3,566 | ) | | $ | 573 | | | $ | 268 | | | $ | (2,725 | ) |
| Segment margin | | | (1917 | )% | | | 29 | % | | | 91 | % | | | | |
| | | | | | | | | | | | | | | | | |
| Unallocated expenses (income) | | | | | | | | | | | | | | | | |
| Corporate expenses (3) | | | | | | | | | | | | | | $ | 3,756 | |
| Interest income | | | | | | | | | | | | | | | (128 | ) |
| Loss before income tax expense | | | | | | | | | | | | | | $ | (6,353 | ) |
| | | | | | | | | | | | | | | | | |
| | | Year Ended December 31, 2024 | |
| | | Managed Services | | | Collaboration Products | | | Total | |
| | | | | | | | | | | | | |
| Revenue | | | | | | | | | | | | |
| Network services | | $ | 1,990 | | | $ | — | | | $ | 1,990 | |
| Video collaboration | | | 56 | | | | 316 | | | | 372 | |
| Professional and other services | | | 16 | | | | — | | | | 16 | |
| Total revenue | | | 2,062 | | | | 316 | | | | 2,378 | |
| | | | | | | | | | | | | |
| Significant Segment Expenses | | | | | | | | | | | | |
| Labor and labor-related (1) | | | 132 | | | | 550 | | | | 682 | |
| Severance | | | — | | | | 46 | | | | 46 | |
| Circuit and network cost of revenue | | | 1,202 | | | | — | | | | 1,202 | |
| Inventory and inventory-related | | | — | | | | 273 | | | | 273 | |
| Other non-inventory cost of revenue | | | 4 | | | | 19 | | | | 23 | |
| Research and development | | | — | | | | 145 | | | | 145 | |
| Bad debt expense | | | — | | | | 2 | | | | 2 | |
| Segment profit (loss) | | $ | 724 | | | $ | (719 | ) | | $ | 5 | |
| Segment margin | | | 35 | % | | | (228 | )% | | | | |
| | | | | | | | | | | | | |
| Unallocated expenses (income) (3) | | | | | | | | | | | | |
| Corporate expenses | | | | | | | | | | $ | 4,067 | |
| Stock compensation | | | | | | | | | | | 62 | |
| Severance | | | | | | | | | | | 60 | |
| Interest income | | | | | | | | | | | (151 | ) |
| Loss before income tax expense | | | | | | | | | | $ | (4,033 | ) |
| | | | | | | | | | | | | |
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| Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block] |
| | | Year Ended December 31, | |
| | | 2025 | | | 2024 | |
| Domestic | | $ | 1,142 | | | $ | 913 | |
| Foreign | | | 1,295 | | | | 1,465 | |
| | | $ | 2,437 | | | $ | 2,378 | |
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| Schedules of Concentration of Risk, by Risk Factor [Table Text Block] |
| | | | Year Ended December 31, 2025 | |
| | | | 2025 | | | 2024 | |
| | Segment | | % of Revenue | | | % of Revenue | |
| Customer A | Managed Services | | | 79.0 | % | | | 84.9 | % |
| | | | As of December 31, | |
| | | | 2025 | | | 2024 | |
| | Segment | | % of Accounts Receivable | | | % of Accounts Receivable | |
| Customer A | Managed Services | | | 97.3 | % | | | 82.6 | % |
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