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Consolidated Entities - Summary of individual investments held by ISP Fund (Details) - USD ($) $ in Thousands | Sep. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Common stock - Publicly traded healthcare companies |  |
Common stock | $ 626 | $ 633
Preferred stocks - Privately held healthcare companies |  |
Preferred stock | 0 | 0
Isp Fund Lp [Member] |  |
Preferred stocks - Privately held healthcare companies |  |
Money market fund and cash | 84,198 | 63,339
Total investments held by ISP Fund LP | 252,307 | 311,812
Isp Fund Lp [Member] | Publicly Held Healthcare Companies |  |
Common stock - Publicly traded healthcare companies |  |
Common stock | 106,525 | 187,868
Isp Fund Lp [Member] | Privately Held Healthcare Companies |  |
Preferred stocks - Privately held healthcare companies |  |
Warrants | 7,926 | 8,075
United States | Publicly Held Healthcare Companies |  |
Common stock - Publicly traded healthcare companies |  |
Common stock | 103,942 |
United States | Isp Fund Lp [Member] | Publicly Held Healthcare Companies |  |
Common stock - Publicly traded healthcare companies |  |
Common stock |  | 184,926
United States | Isp Fund Lp [Member] | Privately Held Healthcare Companies |  |
Preferred stocks - Privately held healthcare companies |  |
Preferred stock | 53,658 | 52,530
United Kingdom | Isp Fund Lp [Member] | Publicly Held Healthcare Companies |  |
Common stock - Publicly traded healthcare companies |  |
Common stock | $ 2,583 | $ 2,942

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