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Equity and Other Investments and Fair Value Measurements - Schedule of Available-for-Sale Securities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands | Mar. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Recurring basis |  |
Assets |  |
Total assets measured at estimated fair value | $ 731,405 | $ 765,285
Recurring basis | Money market funds |  |
Assets |  |
Total assets measured at estimated fair value | 299,416 | 289,441
Recurring basis | Equity investments and Money market funds | ISP Fund LP |  |
Assets |  |
Total assets measured at estimated fair value | 174,700 | 255,658
Recurring basis | Term loan investment | Armata July 2023 Term Loan |  |
Assets |  |
Total assets measured at estimated fair value | 30,482 | 30,197
Recurring basis | Term loan investment | Armata March 2024 Term Loan |  |
Assets |  |
Total assets measured at estimated fair value | 39,849 | 39,275
Recurring basis | Term loan investment | Armata March 2025 Term Loan |  |
Assets |  |
Total assets measured at estimated fair value | 10,116 |
Recurring basis | Quoted Price in Active Markets for Identical Assets, Level 1 |  |
Assets |  |
Total assets measured at estimated fair value | 508,018 | 529,393
Recurring basis | Quoted Price in Active Markets for Identical Assets, Level 1 | Money market funds |  |
Assets |  |
Total assets measured at estimated fair value | 299,416 | 289,441
Recurring basis | Quoted Price in Active Markets for Identical Assets, Level 1 | Equity investments and Money market funds | ISP Fund LP |  |
Assets |  |
Total assets measured at estimated fair value | 171,990 | 193,560
Recurring basis | Quoted Price in Active Markets for Identical Assets, Level 1 | Term loan investment | Armata July 2023 Term Loan |  |
Assets |  |
Total assets measured at estimated fair value | 0 | 0
Recurring basis | Quoted Price in Active Markets for Identical Assets, Level 1 | Term loan investment | Armata March 2024 Term Loan |  |
Assets |  |
Total assets measured at estimated fair value | 0 | 0
Recurring basis | Quoted Price in Active Markets for Identical Assets, Level 1 | Term loan investment | Armata March 2025 Term Loan |  |
Assets |  |
Total assets measured at estimated fair value | 0 |
Recurring basis | Significant Other Observable Inputs, Level 2 |  |
Assets |  |
Total assets measured at estimated fair value | 2,132 | 5,901
Recurring basis | Significant Other Observable Inputs, Level 2 | Money market funds |  |
Assets |  |
Total assets measured at estimated fair value | 0 | 0
Recurring basis | Significant Other Observable Inputs, Level 2 | Equity investments and Money market funds | ISP Fund LP |  |
Assets |  |
Total assets measured at estimated fair value | 0 | 0
Recurring basis | Significant Other Observable Inputs, Level 2 | Term loan investment | Armata July 2023 Term Loan |  |
Assets |  |
Total assets measured at estimated fair value | 0 | 0
Recurring basis | Significant Other Observable Inputs, Level 2 | Term loan investment | Armata March 2024 Term Loan |  |
Assets |  |
Total assets measured at estimated fair value | 0 | 0
Recurring basis | Significant Other Observable Inputs, Level 2 | Term loan investment | Armata March 2025 Term Loan |  |
Assets |  |
Total assets measured at estimated fair value | 0 |
Recurring basis | Significant Unobservable Inputs, Level 3 |  |
Assets |  |
Total assets measured at estimated fair value | 221,255 | 229,991
Recurring basis | Significant Unobservable Inputs, Level 3 | Money market funds |  |
Assets |  |
Total assets measured at estimated fair value | 0 | 0
Recurring basis | Significant Unobservable Inputs, Level 3 | Equity investments and Money market funds | ISP Fund LP |  |
Assets |  |
Total assets measured at estimated fair value | 2,710 | 62,098
Recurring basis | Significant Unobservable Inputs, Level 3 | Term loan investment | Armata July 2023 Term Loan |  |
Assets |  |
Total assets measured at estimated fair value | 30,482 | 30,197
Recurring basis | Significant Unobservable Inputs, Level 3 | Term loan investment | Armata March 2024 Term Loan |  |
Assets |  |
Total assets measured at estimated fair value | 39,849 | 39,275
Recurring basis | Significant Unobservable Inputs, Level 3 | Term loan investment | Armata March 2025 Term Loan |  |
Assets |  |
Total assets measured at estimated fair value | 10,116 |
Nonrecurring basis | Debt |  |
Fair Value Measurements |  |
Total fair value of debt | 462,808 | 473,566
Nonrecurring basis | Quoted Price in Active Markets for Identical Assets, Level 1 | Debt |  |
Fair Value Measurements |  |
Total fair value of debt | 0 | 0
Nonrecurring basis | Significant Other Observable Inputs, Level 2 | Debt |  |
Fair Value Measurements |  |
Total fair value of debt | 462,808 | 473,566
Nonrecurring basis | Significant Unobservable Inputs, Level 3 | Debt |  |
Fair Value Measurements |  |
Total fair value of debt | 0 | 0
Nonrecurring basis | 2025 Notes | Debt |  |
Fair Value Measurements |  |
2025 Notes | 212,231 | 222,353
Nonrecurring basis | 2025 Notes | Quoted Price in Active Markets for Identical Assets, Level 1 | Debt |  |
Fair Value Measurements |  |
2025 Notes | 0 | 0
Nonrecurring basis | 2025 Notes | Significant Other Observable Inputs, Level 2 | Debt |  |
Fair Value Measurements |  |
2025 Notes | 212,231 | 222,353
Nonrecurring basis | 2025 Notes | Significant Unobservable Inputs, Level 3 | Debt |  |
Fair Value Measurements |  |
2025 Notes | 0 | 0
Nonrecurring basis | 2028 Notes | Debt |  |
Fair Value Measurements |  |
2028 Notes | 250,577 | 251,213
Nonrecurring basis | 2028 Notes | Quoted Price in Active Markets for Identical Assets, Level 1 | Debt |  |
Fair Value Measurements |  |
2028 Notes | 0 | 0
Nonrecurring basis | 2028 Notes | Significant Other Observable Inputs, Level 2 | Debt |  |
Fair Value Measurements |  |
2028 Notes | 250,577 | 251,213
Nonrecurring basis | 2028 Notes | Significant Unobservable Inputs, Level 3 | Debt |  |
Fair Value Measurements |  |
2028 Notes | 0 | 0
Armata | Recurring basis | Convertible debt investment |  |
Assets |  |
Total assets measured at estimated fair value | 37,793 | 42,095
Armata | Recurring basis | Equity investment | Common stock |  |
Assets |  |
Total assets measured at estimated fair value | 36,612 | 46,392
Armata | Recurring basis | Equity investment | Warrants |  |
Assets |  |
Total assets measured at estimated fair value | 2,132 | 5,901
Armata | Recurring basis | Quoted Price in Active Markets for Identical Assets, Level 1 | Convertible debt investment |  |
Assets |  |
Total assets measured at estimated fair value | 0 | 0
Armata | Recurring basis | Quoted Price in Active Markets for Identical Assets, Level 1 | Equity investment | Common stock |  |
Assets |  |
Total assets measured at estimated fair value | 36,612 | 46,392
Armata | Recurring basis | Quoted Price in Active Markets for Identical Assets, Level 1 | Equity investment | Warrants |  |
Assets |  |
Total assets measured at estimated fair value | 0 | 0
Armata | Recurring basis | Significant Other Observable Inputs, Level 2 | Convertible debt investment |  |
Assets |  |
Total assets measured at estimated fair value | 0 | 0
Armata | Recurring basis | Significant Other Observable Inputs, Level 2 | Equity investment | Common stock |  |
Assets |  |
Total assets measured at estimated fair value | 0 | 0
Armata | Recurring basis | Significant Other Observable Inputs, Level 2 | Equity investment | Warrants |  |
Assets |  |
Total assets measured at estimated fair value | 2,132 | 5,901
Armata | Recurring basis | Significant Unobservable Inputs, Level 3 | Convertible debt investment |  |
Assets |  |
Total assets measured at estimated fair value | 37,793 | 42,095
Armata | Recurring basis | Significant Unobservable Inputs, Level 3 | Equity investment | Common stock |  |
Assets |  |
Total assets measured at estimated fair value | 0 | 0
Armata | Recurring basis | Significant Unobservable Inputs, Level 3 | Equity investment | Warrants |  |
Assets |  |
Total assets measured at estimated fair value | 0 | 0
InCarda | Recurring basis | Equity investment | Warrants |  |
Assets |  |
Total assets measured at estimated fair value | 53 | 59
InCarda | Recurring basis | Quoted Price in Active Markets for Identical Assets, Level 1 | Equity investment | Warrants |  |
Assets |  |
Total assets measured at estimated fair value | 0 | 0
InCarda | Recurring basis | Significant Other Observable Inputs, Level 2 | Convertible debt investment |  |
Assets |  |
Total assets measured at estimated fair value |  | 0
InCarda | Recurring basis | Significant Other Observable Inputs, Level 2 | Equity investment | Warrants |  |
Assets |  |
Total assets measured at estimated fair value | 0 | 0
InCarda | Recurring basis | Significant Unobservable Inputs, Level 3 | Equity investment | Warrants |  |
Assets |  |
Total assets measured at estimated fair value | 53 | 59
InCarda 2024 Convertible Note | Recurring basis | Convertible debt investment |  |
Assets |  |
Total assets measured at estimated fair value | 436 | 436
InCarda 2024 Convertible Note | Recurring basis | Quoted Price in Active Markets for Identical Assets, Level 1 | Convertible debt investment |  |
Assets |  |
Total assets measured at estimated fair value | 0 | 0
InCarda 2024 Convertible Note | Recurring basis | Significant Other Observable Inputs, Level 2 | Convertible debt investment |  |
Assets |  |
Total assets measured at estimated fair value | 0 |
InCarda 2024 Convertible Note | Recurring basis | Significant Unobservable Inputs, Level 3 | Convertible debt investment |  |
Assets |  |
Total assets measured at estimated fair value | 436 | 436
InCarda 2025 Convertible Note | Recurring basis | Convertible debt investment |  |
Assets |  |
Total assets measured at estimated fair value | 474 |
InCarda 2025 Convertible Note | Recurring basis | Quoted Price in Active Markets for Identical Assets, Level 1 | Convertible debt investment |  |
Assets |  |
Total assets measured at estimated fair value | 0 |
InCarda 2025 Convertible Note | Recurring basis | Significant Other Observable Inputs, Level 2 | Convertible debt investment |  |
Assets |  |
Total assets measured at estimated fair value | 0 |
InCarda 2025 Convertible Note | Recurring basis | Significant Unobservable Inputs, Level 3 | Convertible debt investment |  |
Assets |  |
Total assets measured at estimated fair value | 474 |
ImaginAb | Recurring basis | Convertible debt investment |  |
Assets |  |
Total assets measured at estimated fair value | 4,991 | 4,950
ImaginAb | Recurring basis | Quoted Price in Active Markets for Identical Assets, Level 1 | Convertible debt investment |  |
Assets |  |
Total assets measured at estimated fair value | 0 | 0
ImaginAb | Recurring basis | Significant Other Observable Inputs, Level 2 | Convertible debt investment |  |
Assets |  |
Total assets measured at estimated fair value | 0 | 0
ImaginAb | Recurring basis | Significant Unobservable Inputs, Level 3 | Convertible debt investment |  |
Assets |  |
Total assets measured at estimated fair value | 4,991 | 4,950
Gate 2021 Convertible Note | Recurring basis | Convertible debt investment |  |
Assets |  |
Total assets measured at estimated fair value | 69,951 | 50,881
Gate 2021 Convertible Note | Recurring basis | Quoted Price in Active Markets for Identical Assets, Level 1 | Convertible debt investment |  |
Assets |  |
Total assets measured at estimated fair value | 0 | 0
Gate 2021 Convertible Note | Recurring basis | Significant Other Observable Inputs, Level 2 | Convertible debt investment |  |
Assets |  |
Total assets measured at estimated fair value | 0 | 0
Gate 2021 Convertible Note | Recurring basis | Significant Unobservable Inputs, Level 3 | Convertible debt investment |  |
Assets |  |
Total assets measured at estimated fair value | 69,951 | $ 50,881
Gate 2025 Convertible Note | Recurring basis | Convertible debt investment |  |
Assets |  |
Total assets measured at estimated fair value | 15,200 |
Gate 2025 Convertible Note | Recurring basis | Quoted Price in Active Markets for Identical Assets, Level 1 | Convertible debt investment |  |
Assets |  |
Total assets measured at estimated fair value | 0 |
Gate 2025 Convertible Note | Recurring basis | Significant Other Observable Inputs, Level 2 | Convertible debt investment |  |
Assets |  |
Total assets measured at estimated fair value | 0 |
Gate 2025 Convertible Note | Recurring basis | Significant Unobservable Inputs, Level 3 | Convertible debt investment |  |
Assets |  |
Total assets measured at estimated fair value | 15,200 |
Lyndra Convertible Note | Recurring basis | Convertible debt investment |  |
Assets |  |
Total assets measured at estimated fair value | 9,200 |
Lyndra Convertible Note | Recurring basis | Quoted Price in Active Markets for Identical Assets, Level 1 | Convertible debt investment |  |
Assets |  |
Total assets measured at estimated fair value | 0 |
Lyndra Convertible Note | Recurring basis | Significant Other Observable Inputs, Level 2 | Convertible debt investment |  |
Assets |  |
Total assets measured at estimated fair value | 0 |
Lyndra Convertible Note | Recurring basis | Significant Unobservable Inputs, Level 3 | Convertible debt investment |  |
Assets |  |
Total assets measured at estimated fair value | $ 9,200 |

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