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Other Long-Term Liabilities (Tables) | 12 Months Ended
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Dec. 31, 2017
Other Long-Term Liabilities |
Schedule of other long-term liabilities |
|  | December 31, 2017 |  | December 31, 2016 |
|  | (In thousands) |
Net Deferred Tax Liabilities Related to IPR&D (Note 14) |  | $ | 3,772 |  | $ | 28,054 |
Deferred Income From Sale of Tax Benefits |  |  | 6,756 |  |  | 9,436 |
Other |  |  | 1,344 |  |  | 2,091 |
Contingent Milestones (Note 4) |  |  | 43,400 |  |  | 44,200 |
Deferred Revenue |  |  | 2,813 |  |  | 3,749 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Total |  |  | 58,085 |  |  | 87,530 |
Less Current Portion |  |  | (6,566 | ) |  | (4,826 | )
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Long-Term Portion |  | $ | 51,519 |  | $ | 82,704 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​

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