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Commitments and Contingencies (Tables) | 12 Months Ended
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Dec. 31, 2018
Term Loan and Sublicense Agreement |
Future Minimum Payments Under Non-Cancelable Portion of Operating Leases and Non-Cancelable Purchase Commitments | Future payments under the term loan agreement, sublicense agreement, minimum payments under the non-cancelable portion of our operating leases and non-cancelable purchase commitments at December 31, 2018, are as follows (in thousands):
Year ending December 31, |  |  |  |
2019 |  | $ | 22,378 |
2020 |  |  | 12,256 |
2021 |  |  | 5,144 |
2022 |  |  | 5,212 |
2023 |  |  | 109,760 |
Thereafter |  |  | 39,523 |
Total |  | $ | 194,273 |

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