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Derivative Instruments - Summary of net realized gains (losses) recorded in the consolidated statements of income (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Net realized gains (losses) on derivative instruments |  |  |  |  |
Net realized gains (losses) on derivative instruments | [1] | $ (21,435) | $ 20,369 | $ (36,428) | $ 146,722
Not designated as hedging instrument |  |  |  |  |
Net realized gains (losses) on derivative instruments |  |  |  |  |
Net realized gains (losses) on derivative instruments |  | (21,435) | 20,369 | (36,428) | 146,722
Futures contracts | Not designated as hedging instrument |  |  |  |  |
Net realized gains (losses) on derivative instruments |  |  |  |  |
Net realized gains (losses) on derivative instruments |  | (10,073) | 10,945 | (17,394) | 105,282
Foreign currency forward contracts | Not designated as hedging instrument |  |  |  |  |
Net realized gains (losses) on derivative instruments |  |  |  |  |
Net realized gains (losses) on derivative instruments |  | (16,146) | 10,813 | (36,922) | 3,466
TBAs | Not designated as hedging instrument |  |  |  |  |
Net realized gains (losses) on derivative instruments |  |  |  |  |
Net realized gains (losses) on derivative instruments |  | (46) | 120 | (46) | 1,129
Other | Not designated as hedging instrument |  |  |  |  |
Net realized gains (losses) on derivative instruments |  |  |  |  |
Net realized gains (losses) on derivative instruments | [2] | $ 4,830 | $ (1,509) | $ 17,934 | $ 36,845
[1] | See note 10 for information on the Company’s derivative instruments.
[2] | Includes realized gains and losses on swaps, options and other derivatives contracts

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- Definition Amount of increase (decrease) in the fair value of derivatives recognized in the income statement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=125515794&loc=SL5618551-113959 + Details
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