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Other Long-Term Liabilities (Tables) | 12 Months Ended
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Dec. 31, 2018
Other Long-Term Liabilities |
Schedule of other long-term liabilities |
|  | December 31, |  | December 31,
|  | 2018 |  | 2017
|  | (In thousands)
Net Deferred Tax Liabilities Related to IPR&D (Note 14) |  | $ | 3,007 |  | $ | 3,772
Deferred Income From Sale of Tax Benefits |  |  | 4,218 |  |  | 6,756
Other |  |  | 1,083 |  |  | 1,344
Contingent Milestones (Note 4) |  |  | 13,779 |  |  | 43,400
Deferred Revenue |  |  | 1,586 |  |  | 2,813
Total |  |  | 23,673 |  |  | 58,085
Less Current Portion |  |  | (4,526) |  |  | (6,566)
Long-Term Portion |  | $ | 19,147 |  | $ | 51,519

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