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Financial Information By Quarter (Unaudited) (Tables) | 12 Months Ended
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Dec. 31, 2017
Quarterly Financial Information [Abstract] |
Schedule of quarterly financial information | Financial Information By Quarter (Unaudited)
| Three Months Ended
2017 | March 31 |  | June 30 |  | September 30 |  | December 31
| (in thousands, except for per share data)
Revenues | $ | 5,202 |  |  | $ | 4,265 |  |  | $ | 1,390 |  |  | $ | 1,412 |
Selling, general and administrative | 2,870 |  |  | 3,058 |  |  | 3,094 |  |  | 3,281 |
Research and development | 6,360 |  |  | 5,068 |  |  | 2,471 |  |  | 2,781 |
Patent expenses | 241 |  |  | 197 |  |  | 251 |  |  | 221 |
Lease termination | — |  |  | — |  |  | 1,225 |  |  | — |
Operating loss | (4,269 | ) |  | (4,059 | ) |  | (5,651 | ) |  | (4,871 | )
Net loss | (8,615 | ) |  | (7,501 | ) |  | (9,816 | ) |  | (10,303 | )
Loss per common share: basic and diluted | $ | (0.11 | ) |  | $ | (0.10 | ) |  | $ | (0.12 | ) |  | $ | (0.13 | )
| Three Months Ended
2016 | March 31 |  | June 30 |  | September 30 |  | December 31
| (in thousands, except for per share data)
Revenues | $ | 1,270 |  |  | $ | 1,901 |  |  | $ | 4,658 |  |  | $ | 7,159 |
Selling, general and administrative | 2,656 |  |  | 3,739 |  |  | 2,855 |  |  | 4,464 |
Research and development | 2,536 |  |  | 2,948 |  |  | 6,069 |  |  | 8,158 |
Patent expenses | 220 |  |  | 240 |  |  | 230 |  |  | 219 |
Interest on PharmAthene liability | 2,917 |  |  | 4,259 |  |  | 3,566 |  |  | 927 |
Operating loss | (7,059 | ) |  | (9,285 | ) |  | (8,062 | ) |  | (6,609 | )
Net loss | (10,449 | ) |  | (9,566 | ) |  | (9,244 | ) |  | (10,439 | )
Loss per common share: basic and diluted | $ | (0.19 | ) |  | $ | (0.18 | ) |  | $ | (0.17 | ) |  | $ | (0.15 | )

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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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