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Consolidated Entities (Details) - USD ($) $ in Thousands |  | 3 Months Ended | 6 Months Ended |
--- | --- | --- | --- | ---
Apr. 20, 2020 | Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019 | Dec. 31, 2019
Consolidated Entities |  |  |  |  |  |  |
Receivable from related parties |  | $ 82,402 |  | $ 82,402 |  | $ 79,427 | [1]
Cash balance |  | 413,147 |  | 413,147 |  | 278,096 | [1]
Total revenue |  | 78,946 | $ 64,107 | 157,624 | $ 119,290 |  |
Total assets |  | 879,619 |  | 879,619 |  | 724,826 | [1]
Total operating expenses |  | 3,155 | 4,347 | 5,718 | 7,362 |  |
Revenue from collaborative arrangements with a related party |  |  |  |  |  |  |
Consolidated Entities |  |  |  |  |  |  |
Total revenue |  | 10,000 | 0 | 10,000 | 0 |  |
Theravance Respiratory Company, LLC |  |  |  |  |  |  |
Consolidated Entities |  |  |  |  |  |  |
Receivable from related parties |  | 25,600 |  | 25,600 |  | $ 14,400 |
Cash balance |  | 16,500 |  | 16,500 |  |  |
Total revenue |  | 15,600 | $ 9,800 | 31,800 | $ 17,200 |  |
Total operating expenses |  | 500 |  | 800 |  |  |
Theravance Respiratory Company, LLC | Revenue from collaborative arrangements with a related party | MABA program |  |  |  |  |  |  |
Consolidated Entities |  |  |  |  |  |  |
Total revenue |  | 10,000 |  | 10,000 |  |  |
Pulmoquine Therapeutics, Inc. |  |  |  |  |  |  |
Consolidated Entities |  |  |  |  |  |  |
Percentage of outstanding shares acquired | 90.90% |  |  |  |  |  |
Total assets |  | 4,900 |  | 4,900 |  |  |
Total operating expenses |  | $ 600 |  | $ 600 |  |  |
Pulmoquine Therapeutics, Inc. | Series A preferred stock |  |  |  |  |  |  |
Consolidated Entities |  |  |  |  |  |  |
Number of shares to be purchased under the securities purchase agreement | 5,808,550 |  |  |  |  |  |
Payments for acquire variable interest | $ 5,000 |  |  |  |  |  |
[1] | Consolidated balance sheet as of December 31, 2019 has been derived from audited consolidated financial statements.

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