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Investments - Gains and Losses Recognized in Gain (Loss) on Securities, Net (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
(Loss) Gain on Securities [Line Items] |  |  |  |
Gain (Loss) on Securities, net | $ (644) | $ 5,852 | $ 6,980 | $ 3,840
Investments—Consolidated Investment Companies |  |  |  |
(Loss) Gain on Securities [Line Items] |  |  |  |
Net Unrealized Gains (Losses) | (391) | 4,451 | (1,197) | 3,987
Net Realized Gains (Losses) | 184 | (47) | 1,786 | (1,151)
Gain (Loss) on Securities, net | (207) | 4,404 | 589 | 2,836
Investments—Affiliates and Other |  |  |  |
(Loss) Gain on Securities [Line Items] |  |  |  |
Net Unrealized Gains (Losses) | (2,077) | 1,816 | 1,170 | 1,410
Net Realized Gains (Losses) | 1,640 | (368) | 5,221 | (406)
Gain (Loss) on Securities, net | $ (437) | $ 1,448 | $ 6,391 | $ 1,004

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- Definition The net realized gain (loss) on investments sold during the period, not including gains (losses) on securities separately or otherwise categorized as trading, available-for-sale, or held-to-maturity, which, for cash flow reporting, is a component of proceeds from investing activities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585 + Details
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- Definition Amount of unrealized gain (loss) on investment in marketable security. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(7)(c)) -URI http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227 + Details
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