Securities - Schedule of Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Schedule of Available-for-sale Debt Securities
Available-for-sale debt securities, Less than 12 Months, Fair Value	$ 1,375,852	$ 2,735,499
Available-for-sale debt securities, Gross Unrealized Loss, Less than 12 Months	(7,107)	(16,861)
Available-for-sale debt securities, More than 12 Months, Fair Value	4,071,829	4,413,878
Available-for-sale debt securities, Gross Unrealized Loss, More than 12 Months	(468,528)	(657,376)
Available-for-sale debt securities fair value, Total	5,447,681	7,149,377
Available-for-sale debt securities, Gross Unrealized Loss, Total	(475,635)	(674,237)
U.S. Treasury securities
Schedule of Available-for-sale Debt Securities
Available-for-sale debt securities, Less than 12 Months, Fair Value	323,019	0
Available-for-sale debt securities, Gross Unrealized Loss, Less than 12 Months	(1,627)	0
Available-for-sale debt securities, More than 12 Months, Fair Value	575,638	638,265
Available-for-sale debt securities, Gross Unrealized Loss, More than 12 Months	(15,350)	(38,035)
Available-for-sale debt securities fair value, Total	898,657	638,265
Available-for-sale debt securities, Gross Unrealized Loss, Total	(16,977)	(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, More than 12 Months, Fair Value	257,654	262,587
Available-for-sale debt securities, Gross Unrealized Loss, More than 12 Months	(30,033)	(45,633)
Available-for-sale debt securities fair value, Total	257,654	262,587
Available-for-sale debt securities, Gross Unrealized Loss, Total	(30,033)	(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	0	2,741
Available-for-sale debt securities, Gross Unrealized Loss, Less than 12 Months	0	(30)
Available-for-sale debt securities, More than 12 Months, Fair Value	256,503	377,756
Available-for-sale debt securities, Gross Unrealized Loss, More than 12 Months	(27,312)	(47,177)
Available-for-sale debt securities fair value, Total	256,503	380,497
Available-for-sale debt securities, Gross Unrealized Loss, Total	(27,312)	(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	1,052,833	2,719,228
Available-for-sale debt securities, Gross Unrealized Loss, Less than 12 Months	(5,480)	(16,404)
Available-for-sale debt securities, More than 12 Months, Fair Value	1,582,952	1,528,252
Available-for-sale debt securities, Gross Unrealized Loss, More than 12 Months	(182,169)	(232,382)
Available-for-sale debt securities fair value, Total	2,635,785	4,247,480
Available-for-sale debt securities, Gross Unrealized Loss, Total	(187,649)	(248,786)
Municipal securities
Schedule of Available-for-sale Debt Securities
Available-for-sale debt securities, Less than 12 Months, Fair Value	0	2,763
Available-for-sale debt securities, Gross Unrealized Loss, Less than 12 Months	0	(95)
Available-for-sale debt securities, More than 12 Months, Fair Value	237,214	245,360
Available-for-sale debt securities, Gross Unrealized Loss, More than 12 Months	(34,193)	(37,091)
Available-for-sale debt securities fair value, Total	237,214	248,123
Available-for-sale debt securities, Gross Unrealized Loss, Total	(34,193)	(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	0	10,767
Available-for-sale debt securities, Gross Unrealized Loss, Less than 12 Months	0	(332)
Available-for-sale debt securities, More than 12 Months, Fair Value	190,948	235,668
Available-for-sale debt securities, Gross Unrealized Loss, More than 12 Months	(22,139)	(35,435)
Available-for-sale debt securities fair value, Total	190,948	246,435
Available-for-sale debt securities, Gross Unrealized Loss, Total	(22,139)	(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, More than 12 Months, Fair Value	393,787	433,608
Available-for-sale debt securities, Gross Unrealized Loss, More than 12 Months	(58,421)	(80,919)
Available-for-sale debt securities fair value, Total	393,787	433,608
Available-for-sale debt securities, Gross Unrealized Loss, Total	(58,421)	(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, More than 12 Months, Fair Value	454,975	526,166
Available-for-sale debt securities, Gross Unrealized Loss, More than 12 Months	(89,183)	(127,334)
Available-for-sale debt securities fair value, Total	454,975	526,166
Available-for-sale debt securities, Gross Unrealized Loss, Total	(89,183)	(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, More than 12 Months, Fair Value	90,769	87,008
Available-for-sale debt securities, Gross Unrealized Loss, More than 12 Months	(9,231)	(12,992)
Available-for-sale debt securities fair value, Total	90,769	87,008
Available-for-sale debt securities, Gross Unrealized Loss, Total	(9,231)	(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, More than 12 Months, Fair Value	31,389	34,715
Available-for-sale debt securities, Gross Unrealized Loss, More than 12 Months	(497)	(371)
Available-for-sale debt securities fair value, Total	31,389	34,715
Available-for-sale debt securities, Gross Unrealized Loss, Total	$ (497)	(371)
Collateralized loan obligations (“CLOs”)
Schedule of Available-for-sale Debt Securities
Available-for-sale debt securities, Less than 12 Months, Fair Value		0
Available-for-sale debt securities, Gross Unrealized Loss, Less than 12 Months		0
Available-for-sale debt securities, More than 12 Months, Fair Value		44,493
Available-for-sale debt securities, Gross Unrealized Loss, More than 12 Months		(7)
Available-for-sale debt securities fair value, Total		44,493
Available-for-sale debt securities, Gross Unrealized Loss, Total		$ (7)