Securities - Schedule of Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Schedule of Available-for-sale Debt Securities
Available-for-sale debt securities, Less than 12 Months, Fair Value	$ 2,735,499	$ 125,924
Available-for-sale debt securities, Gross Unrealized Loss, Less than 12 Months	(16,861)	(721)
Available-for-sale debt securities, More than 12 Months, Fair Value	4,413,878	5,532,528
Available-for-sale debt securities, Gross Unrealized Loss, More than 12 Months	(657,376)	(728,216)
Available-for-sale debt securities, Fair Value, Total	7,149,377	5,658,452
Available-for-sale debt securities, Gross Unrealized Loss, Total	(674,237)	(728,937)
U.S. Treasury securities
Schedule of Available-for-sale Debt Securities
Available-for-sale debt securities, Less than 12 Months, Fair Value	0	0
Available-for-sale debt securities, Gross Unrealized Loss, Less than 12 Months	0	0
Available-for-sale debt securities, More than 12 Months, Fair Value	638,265	623,978
Available-for-sale debt securities, Gross Unrealized Loss, More than 12 Months	(38,035)	(52,313)
Available-for-sale debt securities, Fair Value, Total	638,265	623,978
Available-for-sale debt securities, Gross Unrealized Loss, Total	(38,035)	(52,313)
U.S. government agency and U.S. government sponsored enterprise debt securities
Schedule of Available-for-sale Debt Securities
Available-for-sale debt securities, Less than 12 Months, Fair Value	0	0
Available-for-sale debt securities, Gross Unrealized Loss, Less than 12 Months	0	0
Available-for-sale debt securities, More than 12 Months, Fair Value	262,587	364,446
Available-for-sale debt securities, Gross Unrealized Loss, More than 12 Months	(45,633)	(47,640)
Available-for-sale debt securities, Fair Value, Total	262,587	364,446
Available-for-sale debt securities, Gross Unrealized Loss, Total	(45,633)	(47,640)
U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities - Commercial mortgage-backed securities
Schedule of Available-for-sale Debt Securities
Available-for-sale debt securities, Less than 12 Months, Fair Value	2,741	0
Available-for-sale debt securities, Gross Unrealized Loss, Less than 12 Months	(30)	0
Available-for-sale debt securities, More than 12 Months, Fair Value	377,756	463,572
Available-for-sale debt securities, Gross Unrealized Loss, More than 12 Months	(47,177)	(63,276)
Available-for-sale debt securities, Fair Value, Total	380,497	463,572
Available-for-sale debt securities, Gross Unrealized Loss, Total	(47,207)	(63,276)
U.S. government agency and U.S. government-sponsored enterprise mortgage-backed securities - Residential mortgage-backed securities
Schedule of Available-for-sale Debt Securities
Available-for-sale debt securities, Less than 12 Months, Fair Value	2,719,228	9,402
Available-for-sale debt securities, Gross Unrealized Loss, Less than 12 Months	(16,404)	(558)
Available-for-sale debt securities, More than 12 Months, Fair Value	1,528,252	1,661,112
Available-for-sale debt securities, Gross Unrealized Loss, More than 12 Months	(232,382)	(229,155)
Available-for-sale debt securities, Fair Value, Total	4,247,480	1,670,514
Available-for-sale debt securities, Gross Unrealized Loss, Total	(248,786)	(229,713)
Municipal securities
Schedule of Available-for-sale Debt Securities
Available-for-sale debt securities, Less than 12 Months, Fair Value	2,763	2,825
Available-for-sale debt securities, Gross Unrealized Loss, Less than 12 Months	(95)	(15)
Available-for-sale debt securities, More than 12 Months, Fair Value	245,360	254,773
Available-for-sale debt securities, Gross Unrealized Loss, More than 12 Months	(37,091)	(36,327)
Available-for-sale debt securities, Fair Value, Total	248,123	257,598
Available-for-sale debt securities, Gross Unrealized Loss, Total	(37,186)	(36,342)
Non-agency commercial mortgage-backed securities
Schedule of Available-for-sale Debt Securities
Available-for-sale debt securities, Less than 12 Months, Fair Value	10,767	2,742
Available-for-sale debt securities, Gross Unrealized Loss, Less than 12 Months	(332)	(4)
Available-for-sale debt securities, More than 12 Months, Fair Value	235,668	364,774
Available-for-sale debt securities, Gross Unrealized Loss, More than 12 Months	(35,435)	(42,058)
Available-for-sale debt securities, Fair Value, Total	246,435	367,516
Available-for-sale debt securities, Gross Unrealized Loss, Total	(35,767)	(42,062)
Non-agency residential mortgage-backed Securities
Schedule of Available-for-sale Debt Securities
Available-for-sale debt securities, Less than 12 Months, Fair Value	0	0
Available-for-sale debt securities, Gross Unrealized Loss, Less than 12 Months	0	0
Available-for-sale debt securities, More than 12 Months, Fair Value	433,608	553,671
Available-for-sale debt securities, Gross Unrealized Loss, More than 12 Months	(80,919)	(89,664)
Available-for-sale debt securities, Fair Value, Total	433,608	553,671
Available-for-sale debt securities, Gross Unrealized Loss, Total	(80,919)	(89,664)
Corporate debt securities
Schedule of Available-for-sale Debt Securities
Available-for-sale debt securities, Less than 12 Months, Fair Value	0	0
Available-for-sale debt securities, Gross Unrealized Loss, Less than 12 Months	0	0
Available-for-sale debt securities, More than 12 Months, Fair Value	526,166	502,425
Available-for-sale debt securities, Gross Unrealized Loss, More than 12 Months	(127,334)	(151,076)
Available-for-sale debt securities, Fair Value, Total	526,166	502,425
Available-for-sale debt securities, Gross Unrealized Loss, Total	(127,334)	(151,076)
Foreign government bonds
Schedule of Available-for-sale Debt Securities
Available-for-sale debt securities, Less than 12 Months, Fair Value	0	110,955
Available-for-sale debt securities, Gross Unrealized Loss, Less than 12 Months	0	(144)
Available-for-sale debt securities, More than 12 Months, Fair Value	87,008	88,616
Available-for-sale debt securities, Gross Unrealized Loss, More than 12 Months	(12,992)	(11,384)
Available-for-sale debt securities, Fair Value, Total	87,008	199,571
Available-for-sale debt securities, Gross Unrealized Loss, Total	(12,992)	(11,528)
Asset-backed securities
Schedule of Available-for-sale Debt Securities
Available-for-sale debt securities, Less than 12 Months, Fair Value	0	0
Available-for-sale debt securities, Gross Unrealized Loss, Less than 12 Months	0	0
Available-for-sale debt securities, More than 12 Months, Fair Value	34,715	42,300
Available-for-sale debt securities, Gross Unrealized Loss, More than 12 Months	(371)	(934)
Available-for-sale debt securities, Fair Value, Total	34,715	42,300
Available-for-sale debt securities, Gross Unrealized Loss, Total	(371)	(934)
Collateralized loan obligations (“CLOs”)
Schedule of Available-for-sale Debt Securities
Available-for-sale debt securities, Less than 12 Months, Fair Value	0	0
Available-for-sale debt securities, Gross Unrealized Loss, Less than 12 Months	0	0
Available-for-sale debt securities, More than 12 Months, Fair Value	44,493	612,861
Available-for-sale debt securities, Gross Unrealized Loss, More than 12 Months	(7)	(4,389)
Available-for-sale debt securities, Fair Value, Total	44,493	612,861
Available-for-sale debt securities, Gross Unrealized Loss, Total	$ (7)	$ (4,389)