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Quarterly Financial Information (unaudited) (Tables) | 12 Months Ended
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Dec. 31, 2019
Quarterly Financial Information Disclosure [Abstract] |
Quarterly Financial Information (Unaudited) | The following is a summary of the quarterly results of operations for the years ended December 31, 2019 and 2018:
|  | Consolidated Statements of Operations Data
|  | Quarter Ended
|  | March 31 |  | June 30 |  | September 30 |  | December 31
|  | (In thousands, except per share amounts)
2019 |  |  |  |  |  |  |  |  |  |  |  |
Total revenues(1) |  | $ | 8,131 |  | $ | 962 |  | $ | 8,855 |  | $ | 422
Operating costs and expenses |  |  | (6,195) |  |  | (5,673) |  |  | (5,964) |  |  | (4,423)
Income (loss) from operations |  |  | 1,936 |  |  | (4,711) |  |  | 2,891 |  |  | (4,001)
Other income (expense), net |  |  | 1,297 |  |  | 639 |  |  | 287 |  |  | (320)
Net income (loss) before income tax |  |  | 3,233 |  |  | (4,072) |  |  | 3,178 |  |  | (4,321)
Income tax (expense) benefit |  |  | — |  |  | — |  |  | — |  |  | —
Net income (loss) |  | $ | 3,233 |  | $ | (4,072) |  | $ | 3,178 |  | $ | (4,321)
Basic net income (loss) per share attributable to common stockholders |  | $ | 0.22 |  | $ | (0.47) |  | $ | 0.21 |  | $ | (0.49)
Diluted net income (loss) per share attributable to common stockholders (2) |  | $ | 0.21 |  | $ | (0.47) |  | $ | 0.20 |  | $ | (0.49)
2018 |  |  |  |  |  |  |  |  |  |  |  |
Total revenues(3) |  | $ | 463 |  | $ | 2,255 |  | $ | 896 |  | $ | 1,685
Restructuring (charge) credit |  |  | — |  |  | (459) |  |  | (909) |  |  | (543)
Operating costs and expenses |  |  | (5,600) |  |  | (4,787) |  |  | (5,294) |  |  | (4,564)
Loss from operations |  |  | (5,137) |  |  | (2,991) |  |  | (5,307) |  |  | (3,422)
Other income, net |  |  | 1,331 |  |  | 1,044 |  |  | 729 |  |  | 312
Net loss before income tax |  |  | (3,806) |  |  | (1,947) |  |  | (4,578) |  |  | (3,110)
Income tax benefit |  |  | — |  |  | — |  |  | — |  |  | 98
Net loss |  | $ | (3,806) |  | $ | (1,947) |  | $ | (4,578) |  | $ | (3,012)
Basic net loss per share attributable to common stockholders |  | $ | (0.46) |  | $ | (0.23) |  | $ | (0.55) |  | $ | (0.35)
Diluted net loss per share attributable to common stockholders |  | $ | (0.46) |  | $ | (0.23) |  | $ | (0.55) |  | $ | (0.35)
| (1) |  | Total revenues mainly include $14.0 million of revenue recognized in the first and the third quarter in 2019 under the license agreement and common stock purchase agreement with Rezolute, and $2.5 million in milestone revenue earned in the third quarter of 2019 under our license agreement with Janssen.

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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/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 270 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=118952077&loc=d3e1280-108306 + Details
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