Investment Securities - Unrealized Losses on Securities Available-for-Sale (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 94,936	$ 564,892
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(131)	(3,247)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	1,295,898	1,365,958
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(196,759)	(277,257)
Debt Securities, Available-for-sale, Unrealized Loss Position	1,390,834	1,930,850
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(196,890)	(280,504)
Residential Mortgage Backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	0	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	0	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	834,085	861,840
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(138,076)	(189,761)
Debt Securities, Available-for-sale, Unrealized Loss Position	834,085	861,840
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(138,076)	(189,761)
Commercial Mortgage Backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	4,994	40,291
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(6)	(87)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	32,006	11,273
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(1,094)	(959)
Debt Securities, Available-for-sale, Unrealized Loss Position	37,000	51,564
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(1,100)	(1,046)
Government agency and government-sponsored enterprise collateralized mortgage obligations [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	70,270	273,347
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(117)	(1,994)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	101,501	104,757
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(15,183)	(18,917)
Debt Securities, Available-for-sale, Unrealized Loss Position	171,771	378,104
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(15,300)	(20,911)
US States and Political Subdivisions Debt Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months		0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss		0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer		594
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss		(8)
Debt Securities, Available-for-sale, Unrealized Loss Position		594
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss		(8)
Corporate Debt Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	0	15,968
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	0	(32)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	188,545	241,744
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(15,441)	(31,354)
Debt Securities, Available-for-sale, Unrealized Loss Position	188,545	257,712
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(15,441)	(31,386)
Private Label Collateralized Mortgage Obligations [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	19,672	180,915
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(8)	(1,031)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	127,020	129,178
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(26,326)	(34,681)
Debt Securities, Available-for-sale, Unrealized Loss Position	146,692	310,093
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(26,334)	(35,712)
Collateralized Loan Obligations [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months		38,771
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss		(29)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer		0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss		0
Debt Securities, Available-for-sale, Unrealized Loss Position		38,771
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss		(29)
Mortgage-backed Securities, Issued by Private Enterprises
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	0	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	0	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	9,279	12,372
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(467)	(1,213)
Debt Securities, Available-for-sale, Unrealized Loss Position	9,279	12,372
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	(467)	(1,213)
Asset-backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months		15,600
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss		(74)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer		0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss		0
Debt Securities, Available-for-sale, Unrealized Loss Position		15,600
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss		(74)
SBA asset-backed securities [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	0	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	0	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	3,462	4,200
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(172)	(364)
Debt Securities, Available-for-sale, Unrealized Loss Position	3,462	4,200
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ (172)	$ (364)