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Note 4 - Investments (Tables) | 12 Months Ended
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Dec. 31, 2016
Notes Tables |
Equity Method Investments [Table Text Block] |
As of and for the year ended December 31 , (in thousands) |  | 201 6 |  |  | 201 5 |
Revenues |  | $ | 2,050 |  |  | $ | 1,878 |
Operating loss |  |  | (168 | ) |  |  | (58 | )
Net loss |  |  | (168 | ) |  |  | (58 | )
As of and for the year ended December 31, (in thousands) |  | 201 6 |  |  | 201 5 |
Current assets |  | $ | 107 |  |  | $ | 133 |
Non-current assets |  |  | 3,002 |  |  |  | 3,004 |
Current liabilities |  |  | 400 |  |  |  | 260 |
Stockholders’ equity |  |  | 2,709 |  |  |  | 2,877 |
Equity Method Investments [Member] |
Notes Tables |
Equity Method Investments [Table Text Block] |
|  | Carrying Value |
At December 31, (in thousands) |  | 201 6 |  |  | 201 5 |
NKD Enterprises, LLC |  | $ | 64 |  |  | $ | 107 |

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