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Note 2 - Supplemental Balance-sheet Information (Tables) | 12 Months Ended
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Dec. 31, 2021
Notes Tables |
Financing Receivable, Past Due [Table Text Block] |
|  | December 31, 2021 |  |  | December 31, 2020 |
Contract and other receivables |  | $ | 1,853 |  |  | $ | 922 |
Allowance for doubtful accounts |  |  | (7 | ) |  |  | (7 | )
|  | $ | 1,846 |  |  | $ | 915 |
Schedule of Inventory, Current [Table Text Block] |
|  | December 31, 2021 |  |  | December 31, 2020 |
Materials and component parts |  | $ | 150 |  |  | $ | 149 |
Reseller inventories |  |  | 701 |  |  |  | 52 |
Reserve |  |  | (4 | ) |  |  | (4 | )
Inventories, net |  | $ | 847 |  |  | $ | 197 |
Schedule of Intangible Assets and Goodwill [Table Text Block] |
|  | December 31, 2021 |  |  | December 31, 2020 |
|  | Gross |  |  |  |  |  |  | Gross |  |  |  |  |
|  | Carrying |  |  | Accumulated |  |  | Carrying |  |  | Accumulated |
|  | Amount |  |  | Amortization |  |  | Amount |  |  | Amortization |
Intangible assets not subject to amortization: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill |  | $ | 780 |  |  |  | - |  |  | $ | 780 |  |  |  | - |
Intangible assets subject to amortization: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Customer relationships |  | $ | 906 |  |  | $ | (780 | ) |  | $ | 906 |  |  | $ | (690 | )
Acquired software |  | $ | 234 |  |  | $ | (234 | ) |  | $ | 234 |  |  | $ | (234 | )
Schedule of Goodwill [Table Text Block] |
|  | December 31, 2021 |  |  | December 31, 2020 |
Facilities unit |  | $ | 643 |  |  | $ | 643 |
Systems Integration unit |  |  | 137 |  |  |  | 137 |
Total |  | $ | 780 |  |  | $ | 780 |
Property, Plant and Equipment [Table Text Block] |
| Estimated Useful |  | December 31, |
| Lives |  | 2021 |  |  | 2020 |
| (years) |  |  |  |  |  |  |  |
Trade equipment |  | 5 |  |  | $ | 144 |  |  | $ | 144 |
Leasehold improvements | 2 | – | 5 |  |  | 725 |  |  |  | 725 |
Furniture and fixtures |  | 7 |  |  |  | 16 |  |  |  | 16 |
Computer equipment and software |  | 3 |  |  |  | 2,135 |  |  |  | 2,071 |
|  |  |  |  |  | 3,020 |  |  |  | 2,956 |
Less accumulated depreciation |  |  |  |  |  | (2,739 | ) |  |  | (2,294 | )
Property and equipment, net |  |  |  |  | $ | 281 |  |  | $ | 662 |
Schedule of Accounts Payable and Accrued Liabilities [Table Text Block] |
|  | December 31, |
|  | 2021 |  |  | 2020 |
Accounts payable |  | $ | 5,472 |  |  | $ | 12,550 |
Legal settlement |  |  | 500 |  |  |  | - |
Accrued expenses |  |  | 703 |  |  |  | 453 |
Compensation, benefits and related taxes |  |  | 270 |  |  |  | 358 |
Other accrued expenses |  |  | 71 |  |  |  | 13 |
Total accounts payable and accrued expenses |  | $ | 7,016 |  |  | $ | 13,374 |

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