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DERIVATIVE INSTRUMENTS - Gain (Loss) Recognized in the Consolidated Statements of Operations Related to its Derivative Instruments (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Amount of gain (loss) recognized on derivatives | $ (76,217) | $ (9,151) | $ (243,319) | $ (13,573)
Derivative instruments not designated as hedges |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Amount of gain (loss) recognized on derivatives | (81,142) | (9,598) | (252,538) | (14,368)
Derivative instruments not designated as hedges | Interest rate futures |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Amount of gain (loss) recognized on derivatives | (40,245) | (2,767) | (83,731) | 1,445
Derivative instruments not designated as hedges | Interest rate swaps |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Amount of gain (loss) recognized on derivatives | 0 | 9 | 0 | (970)
Derivative instruments not designated as hedges | Foreign currency forward contracts, underwriting and non-investment operations |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Amount of gain (loss) recognized on derivatives | (32,346) | (11,367) | (105,103) | (14,768)
Derivative instruments not designated as hedges | Foreign currency forward contracts, investment operations |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Amount of gain (loss) recognized on derivatives | 6,576 | 3,825 | 14,747 | (3,076)
Derivative instruments not designated as hedges | Foreign currency option contracts |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Amount of gain (loss) recognized on derivatives | 208 | 0 | (236) | 0
Derivative instruments not designated as hedges | Credit default swaps |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Amount of gain (loss) recognized on derivatives | 24 | 366 | (6,450) | 1,790
Derivative instruments not designated as hedges | Total return swaps |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Amount of gain (loss) recognized on derivatives | (6) | 336 | (6) | 1,211
Derivative instruments not designated as hedges | Equity futures |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Amount of gain (loss) recognized on derivatives | (16,594) | 0 | (73,000) | 0
Derivative instruments not designated as hedges | Warrants |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Amount of gain (loss) recognized on derivatives | 1,241 | 0 | 1,241 | 0
Derivative instruments designated as hedges | Foreign currency forward contracts, investment operations |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Accumulated other comprehensive income (loss) | $ 4,925 | $ 447 | $ 9,219 | $ 795

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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 https://asc.fasb.org/extlink&oid=125515794&loc=SL5618551-113959 + Details
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