Securities - Schedule of Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Schedule of Available-for-sale Debt Securities
Available-for-sale debt securities, Less than 12 Months, Fair Value	$ 3,891,352	$ 2,735,499
Available-for-sale debt securities, Gross Unrealized Loss, Less than 12 Months	(16,378)	(16,861)
Available-for-sale debt securities, 12 Months or More, Fair Value	4,326,820	4,413,878
Available-for-sale debt securities, Gross Unrealized Loss, 12 Months or More	(564,590)	(657,376)
Available-for-sale debt securities fair value, Total	8,218,172	7,149,377
Available-for-sale debt securities, Gross Unrealized Loss, Total	(580,968)	(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	616,062	638,265
Available-for-sale debt securities, Gross Unrealized Loss, 12 Months or More	(25,206)	(38,035)
Available-for-sale debt securities fair value, Total	616,062	638,265
Available-for-sale debt securities, Gross Unrealized Loss, Total	(25,206)	(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	270,292	262,587
Available-for-sale debt securities, Gross Unrealized Loss, 12 Months or More	(35,323)	(45,633)
Available-for-sale debt securities fair value, Total	270,292	262,587
Available-for-sale debt securities, Gross Unrealized Loss, Total	(35,323)	(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	2,350	2,741
Available-for-sale debt securities, Gross Unrealized Loss, Less than 12 Months	(4)	(30)
Available-for-sale debt securities, 12 Months or More, Fair Value	346,693	377,756
Available-for-sale debt securities, Gross Unrealized Loss, 12 Months or More	(36,015)	(47,177)
Available-for-sale debt securities fair value, Total	349,043	380,497
Available-for-sale debt securities, Gross Unrealized Loss, Total	(36,019)	(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	3,871,389	2,719,228
Available-for-sale debt securities, Gross Unrealized Loss, Less than 12 Months	(16,241)	(16,404)
Available-for-sale debt securities, 12 Months or More, Fair Value	1,542,586	1,528,252
Available-for-sale debt securities, Gross Unrealized Loss, 12 Months or More	(203,572)	(232,382)
Available-for-sale debt securities fair value, Total	5,413,975	4,247,480
Available-for-sale debt securities, Gross Unrealized Loss, Total	(219,813)	(248,786)
Municipal securities
Schedule of Available-for-sale Debt Securities
Available-for-sale debt securities, Less than 12 Months, Fair Value	4,732	2,763
Available-for-sale debt securities, Gross Unrealized Loss, Less than 12 Months	(127)	(95)
Available-for-sale debt securities, 12 Months or More, Fair Value	233,465	245,360
Available-for-sale debt securities, Gross Unrealized Loss, 12 Months or More	(45,624)	(37,091)
Available-for-sale debt securities fair value, Total	238,197	248,123
Available-for-sale debt securities, Gross Unrealized Loss, Total	(45,751)	(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	12,881	10,767
Available-for-sale debt securities, Gross Unrealized Loss, Less than 12 Months	(6)	(332)
Available-for-sale debt securities, 12 Months or More, Fair Value	211,715	235,668
Available-for-sale debt securities, Gross Unrealized Loss, 12 Months or More	(29,117)	(35,435)
Available-for-sale debt securities fair value, Total	224,596	246,435
Available-for-sale debt securities, Gross Unrealized Loss, Total	(29,123)	(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	411,734	433,608
Available-for-sale debt securities, Gross Unrealized Loss, 12 Months or More	(69,561)	(80,919)
Available-for-sale debt securities fair value, Total	411,734	433,608
Available-for-sale debt securities, Gross Unrealized Loss, Total	(69,561)	(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	527,644	526,166
Available-for-sale debt securities, Gross Unrealized Loss, 12 Months or More	(108,856)	(127,334)
Available-for-sale debt securities fair value, Total	527,644	526,166
Available-for-sale debt securities, Gross Unrealized Loss, Total	(108,856)	(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	89,494	87,008
Available-for-sale debt securities, Gross Unrealized Loss, 12 Months or More	(10,506)	(12,992)
Available-for-sale debt securities fair value, Total	89,494	87,008
Available-for-sale debt securities, Gross Unrealized Loss, Total	(10,506)	(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	32,643	34,715
Available-for-sale debt securities, Gross Unrealized Loss, 12 Months or More	(802)	(371)
Available-for-sale debt securities fair value, Total	32,643	34,715
Available-for-sale debt securities, Gross Unrealized Loss, Total	(802)	(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	44,492	44,493
Available-for-sale debt securities, Gross Unrealized Loss, 12 Months or More	(8)	(7)
Available-for-sale debt securities fair value, Total	44,492	44,493
Available-for-sale debt securities, Gross Unrealized Loss, Total	$ (8)	$ (7)