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Investment Information - Narrative (Details) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2022 USD ($) lots | Mar. 31, 2021 USD ($) | Dec. 31, 2021 USD ($) lots
Continuous unrealized loss, qualitative disclosures: |  |  |
Number of positions in an unrealized loss position (lots) | lots | 6,550 |  | 4,700
Total number of positions (lots) | lots | 9,060 |  | 10,240
Largest single loss | $ 3,600 |  | $ 1,100
Narrative items: |  |  |
Equity securities, at fair value | 1,002,572 |  | $ 1,804,170
Equity in net (loss) income of investment funds accounted for using the equity method | $ 36,305 | $ 71,686 |
Time lag for reporting | 3 months |  |
Minimum |  |  |
Narrative items: |  |  |
Time lag for reporting | 1 month |  |
Maximum |  |  |
Narrative items: |  |  |
Time lag for reporting | 3 months |  |

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- Definition Number of investments in debt securities measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position, without allowance for credit loss. Includes beneficial interest in securitized financial asset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (b)(3) -URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27290-111563 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 50 -Paragraph 4 -Subparagraph (b)(3) -URI http://asc.fasb.org/extlink&oid=124269663&loc=SL82922888-210455 + Details
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