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Note 2 - Supplemental Balance-sheet Information (Tables) | 12 Months Ended
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Dec. 31, 2017
Notes Tables |
Past Due Financing Receivables [Table Text Block] |
|  | December 31, 2017 |  |  | December 31, 2016 |
Contract and other receivables |  | $ | 998 |  |  | $ | 2,393 |
Allowance for doubtful accounts |  |  | (8 | ) |  |  | (4 | )
Contract and other receivables, net |  | $ | 990 |  |  | $ | 2,389 |
Schedule of Inventory, Current [Table Text Block] |
|  | December 31, 2017 |  |  | December 31, 2016 |
Raw materials |  |  | 136 |  |  |  | 61 |
Less: Reserve |  |  | (2 | ) |  |  | (2 | )
Inventories, net |  | $ | 134 |  |  | $ | 59 |
Schedule of Intangible Assets and Goodwill [Table Text Block] |
|  | December 3 1 , 201 7 |  |  | December 31, 201 6 |
|  | Gross |  |  |  |  |  |  | Gross |  |  |  |  |
|  | Carrying |  |  | Accumulated |  |  | Carrying |  |  | Accumulated |
|  | Amount |  |  | Amortization |  |  | Amount |  |  | Amortization |
Intangible assets not subject to amortization: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill |  | $ | 1,907 |  |  |  | - |  |  | $ | 1,907 |  |  |  | - |
Intangible assets subject to amortization: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Customer relationships |  | $ | 906 |  |  | $ | (418 | ) |  | $ | 906 |  |  | $ | (327 | )
Acquired software |  | $ | 234 |  |  | $ | (216 | ) |  | $ | 234 |  |  | $ | (169 | )
Trade name |  | $ | 60 |  |  | $ | (5 | ) |  | $ | 60 |  |  |  | - |
Property, Plant and Equipment [Table Text Block] |
|  | Estimated Useful |  |  | December 31, |
|  | Lives (in years) |  |  | 2017 |  |  | 2016 |
Vehicles |  |  |  | 5 |  |  |  | $ | 32 |  |  | $ | 32 |
Trade equipment |  |  |  | 5 |  |  |  |  | 162 |  |  |  | 162 |
Leasehold improvements |  |  | 2 | – | 5 |  |  |  | 378 |  |  |  | 292 |
Furniture and fixtures |  |  |  | 7 |  |  |  |  | 18 |  |  |  | 16 |
Computer equipment and software |  |  |  | 3 |  |  |  |  | 1,448 |  |  |  | 1,324 |
|  |  |  |  |  |  |  |  | 2,038 |  |  |  | 1,826 |
Less accumulated depreciation |  |  |  |  |  |  |  |  | (1,620 | ) |  |  | (1,282 | )
Property and equipment, net |  |  |  |  |  |  |  | $ | 418 |  |  | $ | 544 |
Schedule of Accounts Payable and Accrued Liabilities [Table Text Block] |
|  | December 31, |
|  | 2017 |  |  | 201 6 |
Accounts payable |  | $ | 1,413 |  |  | $ | 3,652 |
Accrued expenses |  |  | 847 |  |  |  | 1,053 |
Compensation, benefits and related taxes |  |  | 567 |  |  |  | 576 |
Other accrued expenses |  |  | 14 |  |  |  | 38 |
Total accounts payable and accrued expenses |  | $ | 2,841 |  |  | $ | 5,319 |

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