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Note 5 - Sale of Business Component (Tables) | 12 Months Ended
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Dec. 31, 2017
Notes Tables |
Condensed Income Statement [Table Text Block] |
|  | Years Ended December 31, |
|  | 201 7 |  |  | 201 6 |
Pre-tax profit related to facilities maintenance business |  | $ | - |  |  | $ | 812 |
Pre-tax profit related to specific customer contract |  | $ | 93 |  |  | $ | 478 |
Sale of Business Component, Pro Forma Adjustments to Income Statement [Table Text Block] |
|  | Years ended December 31, |
(unaudited, in thousands) |  | 2017 |  |  | 2016 |
|  | (Pro forma) |  |  | (Pro forma) |
Revenue |  | $ | 18,311 |  |  | $ | 22,845 |
Net income (loss) |  | $ | 358 |  |  | $ | (2,655 | )
Basic and diluted net income (loss) per share |  | $ | 0.02 |  |  | $ | (0.17 | )

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