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Other Long-Term Liabilities (Tables) | 12 Months Ended
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Dec. 31, 2019
Other Long-Term Liabilities |
Schedule of other long-term liabilities |
|  | December 31, |  | December 31,
|  | 2019 |  | 2018
|  | (In thousands)
Net Deferred Tax Liabilities Related to IPR&D (Note 15) |  | $ | 3,007 |  | $ | 3,007
Deferred Income From Sale of Tax Benefits |  |  | 1,831 |  |  | 4,218
Other |  |  | — |  |  | 1,083
Contingent Milestones (Note 4) |  |  | 12,485 |  |  | 13,779
Deferred Revenue |  |  | 254 |  |  | 1,586
Total |  |  | 17,577 |  |  | 23,673
Less Current Portion |  |  | (2,026) |  |  | (4,526)
Long-Term Portion |  | $ | 15,551 |  | $ | 19,147

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