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DERIVATIVES - Fair Values of Derivatives Reported on Condensed Consolidated Statements of Financial Condition (Details) - USD ($) $ in Thousands | Mar. 31, 2025 | Dec. 31, 2024
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Derivatives, Fair Value [Line Items] |  |
Derivative assets, fair value | $ 1,865 | $ 4,373
Derivative assets, amounts not netted: cash collateral | (82) | 0
Derivative assets, amounts not netted: securities collateral | 0 | 0
Derivative assets, fair value, total | 1,279 | 3,787
Derivative assets, notional amount | 179,697 | 360,748
Derivative liabilities, fair value | 172,645 | 289,442
Derivative liabilities, amounts not netted: cash collateral | (89) | (1,132)
Derivative liabilities, amounts not netted: securities collateral | 0 | 0
Derivative liabilities, fair value, total | 172,051 | 273,148
Derivative liabilities, notional | 369,133 | 531,202
Forward foreign currency exchange rate contracts |  |
Derivatives, Fair Value [Line Items] |  |
Derivative assets, fair value | 598 | 4,248
Derivative assets fair value counterparty and cash collateral netting | (321) | (461)
Derivative assets, notional amount | 96,561 | 359,717
Derivative liabilities, fair value | 753 | 1,068
Derivative liabilities, fair value, counterparty and cash collateral netting | (322) | (460)
Derivative liabilities, notional | 187,928 | 167,115
Total return swaps and other |  |
Derivatives, Fair Value [Line Items] |  |
Derivative assets, fair value | 1,267 | 125
Derivative assets fair value counterparty and cash collateral netting | (183) | (125)
Derivative assets, notional amount | 83,136 | 1,031
Derivative liabilities, fair value | 183 | 17,527
Derivative liabilities, fair value, counterparty and cash collateral netting | (183) | (14,702)
Derivative liabilities, notional | 17,125 | 116,239
LFI and other similar deferred compensation arrangements |  |
Derivatives, Fair Value [Line Items] |  |
Derivative assets, fair value | 0 | 0
Derivative assets, notional amount | 0 | 0
Derivative liabilities, fair value | 171,709 | 270,847
Derivative liabilities, notional | 164,080 | 247,848
Net derivatives in "other assets" and "other liabilities" |  |
Derivatives, Fair Value [Line Items] |  |
Derivative assets, net derivatives | 1,361 | 3,787
Derivative liabilities, net derivatives | $ 172,140 | $ 274,280

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