Short-term Investments: Investment in Viking - Narrative (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions |
12 Months Ended | ||
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Dec. 31, 2022 |
Dec. 31, 2021 |
Dec. 31, 2020 |
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| Variable Interest Entity [Line Items] | |||
| Investment in Viking common stock | $ 63.1 | $ 30.9 | |
| Warrants | $ 0.0 | $ 0.0 | $ 1.5 |
| Exercise price of warrants (USD per share) | $ 1.50 | ||
| Viking Therapeutics, Inc. | |||
| Variable Interest Entity [Line Items] | |||
| Ownership interest (as a percent) | 8.60% | ||
| Stock sold of equity method investee (in shares) | 0.6 | ||
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- Definition Number Of Shares Sold Of Equity Method Investee No definition available.
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- Definition Exercise price per share or per unit of warrants or rights outstanding. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI), classified as current. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Percentage investment held by members or limited partners of limited liability company (LLC) or limited partnership (LP). Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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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. No definition available.
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- Definition Value of outstanding derivative securities that permit the holder the right to purchase securities (usually equity) from the issuer at a specified price. No definition available.
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- Details
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