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Note 3 - Discontinued Operations (Tables) | 12 Months Ended
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Dec. 31, 2017
Notes Tables |
Disposal Group, Including Discontinued Operation, Balance Sheet Disclosures [Table Text Block] |
|  | December 31, |
|  | 201 7 |  |  | 201 6 |
Asset s |  |  |  |  |  |  |  |
Inventorie s |  | $ | - |  |  | $ | 392 |
Property and equipment, ne t |  |  | - |  |  |  | 36,430 |
Total assets |  | $ | - |  |  | $ | 36,822 |
Discontinued Operation, Income (Loss) from Discontinued Operation Disclosures [Table Text Block] |
|  | Year Ended December 31, |
|  | 201 7 |  |  | 201 6 |  |  | 201 5 |
Net sales |  | $ | 12 |  |  | $ | 6,869 |  |  | $ | 63,448 |
Cost of sales |  |  | 1,792 |  |  |  | 9,777 |  |  |  | 76,679 |
Gross loss |  |  | (1,780 | ) |  |  | (2,908 | ) |  |  | (13,231 | )
Selling, general and administrative expense |  |  | (1 | ) |  |  | 257 |  |  |  | 1,925 |
Gain on sale of facility |  |  | (6 | ) |  |  | - |  |  |  | - |
Operating loss |  |  | (1,773 | ) |  |  | (3,165 | ) |  |  | (15,156 | )
Other income (expense) |  |  | - |  |  |  | (1 | ) |  |  | 30 |
Interest income |  |  | - |  |  |  | - |  |  |  | 172 |
Interest expense |  |  | - |  |  |  | (14 | ) |  |  | (50 | )
Loss before income taxes |  |  | (1,773 | ) |  |  | (3,180 | ) |  |  | (15,004 | )
Income tax benefit |  |  | (2 | ) |  |  | (658 | ) |  |  | (3,428 | )
Net loss |  | $ | (1,771 | ) |  | $ | (2,522 | ) |  | $ | (11,576 | )

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