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Basis of Presentation and Summary of Significant Accounting Policies - Gain (Loss) on Securities (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
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Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021
Accounting Policies [Abstract] |  |  |  |
Total (losses) gains recognized on equity securities | $ (6,251) | $ 62,000 | $ (21,138) | $ 21,781
Gains recognized on equity securities sold | 0 | 0 | 2,272 | 0
Unrealized gains (losses) recognized on equity securities held at end of period | $ (6,251) | $ 62,000 | $ (18,866) | $ 21,781

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- Definition Amount of realized gain (loss) from sale of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 321 -SubTopic 10 -Section 50 -Paragraph 4 -URI https://asc.fasb.org/extlink&oid=126980263&loc=SL75117546-209714 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(3)(d)) -URI https://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263 + Details
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