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Derivatives - Fair Values of Derivatives Reported on Condensed Consolidated Statements of Financial Condition (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
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Derivatives, Fair Value [Line Items] |  |
Derivative assets, fair value | $ 4,373 | $ 3,533
Derivative assets, amounts not netted: cash collateral | 0 | 0
Derivative assets, amounts not netted: securities collateral | 0 | 0
Derivative assets, fair value, total | 3,787 | 2,789
Derivative assets, notional amount | 360,748 | 288,113
Derivative liabilities, fair value | 289,442 | 379,557
Derivative liabilities, amounts not netted: cash collateral | (1,132) | (243)
Derivative liabilities, amounts not netted: securities collateral | 0 | 0
Derivative liabilities, fair value, total | 273,148 | 368,430
Derivative liabilities, notional | 531,202 | 640,734
Forward foreign currency exchange rate contracts |  |
Derivatives, Fair Value [Line Items] |  |
Derivative assets, fair value | 4,248 | 3,400
Derivative assets fair value counterparty and cash collateral netting | (461) | (604)
Derivative assets, notional amount | 359,717 | 283,635
Derivative liabilities, fair value | 1,068 | 1,847
Derivative liabilities, fair value, counterparty and cash collateral netting | (460) | (603)
Derivative liabilities, notional | 167,115 | 170,704
Total return swaps and other |  |
Derivatives, Fair Value [Line Items] |  |
Derivative assets, fair value | 125 | 133
Derivative assets fair value counterparty and cash collateral netting | (125) | (140)
Derivative assets, notional amount | 1,031 | 4,478
Derivative liabilities, fair value | 17,527 | 12,290
Derivative liabilities, fair value, counterparty and cash collateral netting | (14,702) | (10,281)
Derivative liabilities, notional | 116,239 | 117,139
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 | 270,847 | 365,420
Derivative liabilities, notional | 247,848 | 352,891
Net derivatives in "other assets" and "other liabilities" |  |
Derivatives, Fair Value [Line Items] |  |
Derivative assets, net derivatives | 3,787 | 2,789
Derivative liabilities, net derivatives | $ 274,280 | $ 368,673

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