Securities - Schedule of Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Schedule of Available-for-sale Debt Securities
Available-for-sale debt securities, Less than 12 Months, Fair Value	$ 3,190,731	$ 2,735,499
Available-for-sale debt securities, Gross Unrealized Loss, Less than 12 Months	(10,670)	(16,861)
Available-for-sale debt securities, 12 Months or More, Fair Value	4,358,452	4,413,878
Available-for-sale debt securities, Gross Unrealized Loss, 12 Months or More	(594,259)	(657,376)
Available-for-sale debt securities fair value, Total	7,549,183	7,149,377
Available-for-sale debt securities, Gross Unrealized Loss, Total	(604,929)	(674,237)
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, 12 Months or More, Fair Value	610,981	638,265
Available-for-sale debt securities, Gross Unrealized Loss, 12 Months or More	(30,310)	(38,035)
Available-for-sale debt securities fair value, Total	610,981	638,265
Available-for-sale debt securities, Gross Unrealized Loss, Total	(30,310)	(38,035)
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, 12 Months or More, Fair Value	268,406	262,587
Available-for-sale debt securities, Gross Unrealized Loss, 12 Months or More	(38,022)	(45,633)
Available-for-sale debt securities fair value, Total	268,406	262,587
Available-for-sale debt securities, Gross Unrealized Loss, Total	(38,022)	(45,633)
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	2,476	2,741
Available-for-sale debt securities, Gross Unrealized Loss, Less than 12 Months	(25)	(30)
Available-for-sale debt securities, 12 Months or More, Fair Value	358,728	377,756
Available-for-sale debt securities, Gross Unrealized Loss, 12 Months or More	(39,575)	(47,177)
Available-for-sale debt securities fair value, Total	361,204	380,497
Available-for-sale debt securities, Gross Unrealized Loss, Total	(39,600)	(47,207)
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	3,179,008	2,719,228
Available-for-sale debt securities, Gross Unrealized Loss, Less than 12 Months	(10,604)	(16,404)
Available-for-sale debt securities, 12 Months or More, Fair Value	1,524,704	1,528,252
Available-for-sale debt securities, Gross Unrealized Loss, 12 Months or More	(212,427)	(232,382)
Available-for-sale debt securities fair value, Total	4,703,712	4,247,480
Available-for-sale debt securities, Gross Unrealized Loss, Total	(223,031)	(248,786)
Municipal securities
Schedule of Available-for-sale Debt Securities
Available-for-sale debt securities, Less than 12 Months, Fair Value	4,814	2,763
Available-for-sale debt securities, Gross Unrealized Loss, Less than 12 Months	(40)	(95)
Available-for-sale debt securities, 12 Months or More, Fair Value	241,040	245,360
Available-for-sale debt securities, Gross Unrealized Loss, 12 Months or More	(40,480)	(37,091)
Available-for-sale debt securities fair value, Total	245,854	248,123
Available-for-sale debt securities, Gross Unrealized Loss, Total	(40,520)	(37,186)
Non-agency commercial mortgage-backed securities
Schedule of Available-for-sale Debt Securities
Available-for-sale debt securities, Less than 12 Months, Fair Value	4,433	10,767
Available-for-sale debt securities, Gross Unrealized Loss, Less than 12 Months	(1)	(332)
Available-for-sale debt securities, 12 Months or More, Fair Value	221,078	235,668
Available-for-sale debt securities, Gross Unrealized Loss, 12 Months or More	(32,313)	(35,435)
Available-for-sale debt securities fair value, Total	225,511	246,435
Available-for-sale debt securities, Gross Unrealized Loss, Total	(32,314)	(35,767)
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, 12 Months or More, Fair Value	430,068	433,608
Available-for-sale debt securities, Gross Unrealized Loss, 12 Months or More	(72,342)	(80,919)
Available-for-sale debt securities fair value, Total	430,068	433,608
Available-for-sale debt securities, Gross Unrealized Loss, Total	(72,342)	(80,919)
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, 12 Months or More, Fair Value	536,542	526,166
Available-for-sale debt securities, Gross Unrealized Loss, 12 Months or More	(116,958)	(127,334)
Available-for-sale debt securities fair value, Total	536,542	526,166
Available-for-sale debt securities, Gross Unrealized Loss, Total	(116,958)	(127,334)
Foreign government bonds
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, 12 Months or More, Fair Value	88,747	87,008
Available-for-sale debt securities, Gross Unrealized Loss, 12 Months or More	(11,253)	(12,992)
Available-for-sale debt securities fair value, Total	88,747	87,008
Available-for-sale debt securities, Gross Unrealized Loss, Total	(11,253)	(12,992)
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, 12 Months or More, Fair Value	33,735	34,715
Available-for-sale debt securities, Gross Unrealized Loss, 12 Months or More	(502)	(371)
Available-for-sale debt securities fair value, Total	33,735	34,715
Available-for-sale debt securities, Gross Unrealized Loss, Total	(502)	(371)
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, 12 Months or More, Fair Value	44,423	44,493
Available-for-sale debt securities, Gross Unrealized Loss, 12 Months or More	(77)	(7)
Available-for-sale debt securities fair value, Total	44,423	44,493
Available-for-sale debt securities, Gross Unrealized Loss, Total	(77)	$ (7)
US Treasury Securities, With No Unrealized Loss Position
Schedule of Available-for-sale Debt Securities
AFS debt securities	$ 320,000

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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