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Kolltan Acquisition (Tables) | 12 Months Ended
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Dec. 31, 2017
Kolltan Acquisition |
Schedule of acquisition-date fair value of the consideration transferred | The total consideration transferred consisted of the following (in thousands):
Fair value of common stock issued for upfront payment |  | $ | 73,397 |
Fair value of contingent consideration |  |  | 44,200 |
Kolltan transaction expenses paid in cash by the Company |  |  | 3,768 |
​ | ​ | ​ | ​ | ​
Total consideration transferred |  | $ | 121,365 |
​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​
Summary of fair values of the assets acquired and liabilities assumed at the acquisition date | The following table summarizes the fair values of the assets acquired and liabilities assumed as of November 29, 2016 (in thousands):
Cash and cash equivalents |  | $ | 8,160 |
Other current and long-term assets |  |  | 799 |
Property and equipment, net |  |  | 2,072 |
In-process research and development (IPR&D) |  |  | 61,690 |
Goodwill |  |  | 82,011 |
Deferred tax liabilities, net |  |  | (23,393 | )
Other assumed liabilities |  |  | (9,974 | )
​ | ​ | ​ | ​ | ​
Total |  | $ | 121,365 |
​ | ​ | ​ | ​ | ​
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Schedule of the unaudited pro forma financial information |
|  | Unaudited Years Ended December 31, |
|  | 2016 |  | 2015 |
|  | (In thousands) |
Revenue |  | $ | 6,786 |  | $ | 5,480 |
Net loss |  | $ | (146,905 | ) | $ | (157,690 | )
Basic and diluted net loss per common share |  | $ | (1.24 | ) | $ | (1.37 | )

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