Equity Method Investments - Investment in Arbutus (Details) - USD ($) $ / shares in Units, $ in Thousands |
3 Months Ended | |||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Mar. 31, 2026 |
Mar. 31, 2025 |
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| Equity Method Investments [Line Items] | ||||
| Number of shares acquired (in shares) | 722,668,062 | 720,352,386 | ||
| Aggregate fair value investment | $ 444,622 | $ 407,985 | ||
| Investment in Arbutus common shares | ||||
| Equity Method Investments [Line Items] | ||||
| Equity method investment ownership percentage | 20.00% | |||
| Aggregate fair value investment | $ 186,500 | $ 174,800 | ||
| Unrealized gains (losses) on investments | $ 11,700 | $ (15,500) | ||
| Closing price of common stock (in dollars per share) | $ 4.80 | $ 4.50 | ||
| Common Stock | ||||
| Equity Method Investments [Line Items] | ||||
| Number of shares acquired (in shares) | 722,668,062 | 682,229,832 | 720,352,386 | 695,938,323 |
| Common Stock | Investment in Arbutus common shares | ||||
| Equity Method Investments [Line Items] | ||||
| Number of shares acquired (in shares) | 38,847,462 | |||
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- Definition Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Price of a single share of a number of saleable stocks of a company. No definition available.
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- Definition Amount of unrealized gain (loss) on investment. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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