v3.8.0.1

Note 19 - Unaudited Quarterly Financial Data (Tables) | 12 Months Ended
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Dec. 31, 2017
Notes Tables |
Quarterly Financial Information [Table Text Block] |
|  | 201 7 |  |  | 201 6 |
|  | Q1 |  |  | Q2 |  |  | Q3 |  |  | Q4 |  |  | Q1 |  |  | Q2 |  |  | Q3 |  |  | Q4 |
Revenues |  | $ | 3,109 |  |  | $ | 2,659 |  |  | $ | 1,487 |  |  | $ | 740 |  |  | $ | 3,025 |  |  | $ | 4,531 |  |  | $ | 3,366 |  |  | $ | 6,435 |
Operating costs and expenses |  | $ | 15,182 |  |  | $ | 12,600 |  |  | $ | 10,348 |  |  | $ | 8,547 |  |  | $ | 11,547 |  |  | $ | 12,853 |  |  | $ | 11,341 |  |  | $ | 13,573 |
Net income / (loss) |  | $ | (15,551 | ) |  | $ | (13,059 | ) |  | $ | (13,013 | ) |  | $ | (9,885 | ) |  | $ | (10,981 | ) |  | $ | (11,092 | ) |  | $ | (11,402 | ) |  | $ | ( 9,682 | )
Net income / (loss) per share (basic) |  | $ | (0.34 | ) |  | $ | (0.29 | ) |  | $ | (0.28 | ) |  | $ | (0.20 | ) |  | $ | (0.24 | ) |  | $ | (0.24 | ) |  | $ | (0.25 | ) |  | $ | (0.21 | )
Net income / (loss) per share (diluted) |  | $ | (0.34 | ) |  | $ | (0.29 | ) |  | $ | (0.28 | ) |  | $ | (0.20 | ) |  | $ | (0.25 | ) |  | $ | (0.24 | ) |  | $ | (0.25 | ) |  | $ | (0.21 | )

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- Definition Tabular disclosure of quarterly financial data. Includes, but is not limited to, financial information for fiscal quarters, cumulative effect of a change in accounting principle and earnings per share data. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a)-(j) -URI http://asc.fasb.org/extlink&oid=84173487&loc=d3e1280-108306 + Details
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