Investment Securities and Certificates of Deposit - Estimated Fair Value of Investment Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale	$ 744,315	$ 807,135
Investment Securities	1,382,027	1,309,826
Certificates of Deposit, at Carrying Value	54,856	122,890
Investment Securities and Certificates of Deposit	1,436,883	1,432,716
Debt Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale	744,315	807,135
Equity Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Equity Securities, FV-NI	375	335
Debt Securities Carried By EGL [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Trading	476,778	365,638
Investment Funds [Member]
Debt Securities, Available-for-sale [Line Items]
Equity Securities, FV-NI	$ 160,559	$ 136,718

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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