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Consolidated Entities and Acquisitions - Theravance Respiratory Company, LLC (Details) - USD ($) $ in Thousands |  | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Jul. 20, 2022 | Sep. 30, 2023 | Jun. 30, 2023 | Mar. 31, 2023 | Sep. 30, 2022 | Jun. 30, 2022 | Mar. 31, 2022 | Sep. 30, 2023 | Sep. 30, 2022 | Dec. 31, 2022
Income statements |  |  |  |  |  |  |  |  |  |
Total revenue |  | $ 67,259 |  |  | $ 67,257 |  |  | $ 224,623 | $ 265,536 |
Other income, net |  | 1,047 |  |  | 28 |  |  | (4,289) | (750) |
Income tax expense, net |  | 3,906 |  |  | 57,077 |  |  | 14,706 | 63,061 |
Net income (loss) |  | 82,046 | $ 1,280 | $ 34,865 | 229,347 | $ 21,371 | $ 37,858 | 118,191 | 288,576 |
Royalty revenue |  |  |  |  |  |  |  |  |  |
Income statements |  |  |  |  |  |  |  |  |  |
Total revenue |  | $ 53,558 |  |  | 62,150 |  |  | $ 172,681 | 260,429 |
Theravance Respiratory Company, LLC |  |  |  |  |  |  |  |  |  |
CONSOLIDATED ENTITIES |  |  |  |  |  |  |  |  |  |
Ownership interest in LLC |  |  |  |  |  |  |  |  |  | 15.00%
Proceeds from sale of economic interest under Equity Purchase Agreement | $ 277,500 |  |  |  |  |  |  |  |  |
Contingent sales based milestone payment | 50,000 |  |  |  |  |  |  |  |  |
Cash distribution | 4,400 |  |  |  |  |  |  |  |  |
Equity method investments | $ 39,400 |  |  |  |  |  |  |  |  |
Income statements |  |  |  |  |  |  |  |  |  |
Operating expenses |  |  |  |  | (5) |  |  |  | 332 |
Income (loss) from operations |  |  |  |  | 5 |  |  |  | 71,697 |
Other income, net |  |  |  |  | 0 |  |  |  | 10 |
Realized loss |  |  |  |  | (39,386) |  |  |  | (39,386) |
Income tax expense, net |  |  |  |  | 0 |  |  |  | 1 |
Changes in fair values of equity and long-term investments |  |  |  |  | 0 |  |  |  | (8,884) |
Net income (loss) |  |  |  |  | 39,381 |  |  |  | 23,438 |
Theravance Respiratory Company, LLC | Royalty revenue |  |  |  |  |  |  |  |  |  |
Income statements |  |  |  |  |  |  |  |  |  |
Total revenue |  |  |  |  | $ 0 |  |  |  | $ 72,029 |

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