Securities - Schedule of Estimated Fair Value and Unrealized Losses for Debt Securities Available-for-Sale and Held-to-Maturity (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Debt securities available-for-sale:
Available-for-sale, Less than 12 months, Estimated Fair Value	$ 12,194	$ 171,376
Available-for-sale, Less than 12 months, Unrealized Losses	(70)	(264)
Available-for-sale, 12 months or Longer, Estimated Fair Value	278,479	451,856
Available-for-sale, 12 months or longer, Unrealized Losses	(23,128)	(26,117)
Available-for-sale, Total, Estimated Fair Value	290,673	623,232
Available-for-sale, Total, Unrealized Losses	(23,198)	(26,381)
Debt securities held-to-maturity:
Held-to-maturity, Less than 12 months, Estimated Fair Value	84,769	124,433
Held-to-maturity, Less than 12 months, Unrealized Losses	(604)	(1,559)
Held-to-maturity, 12 months or longer, Estimated Fair Value	897,090	849,609
Held-to-maturity, 12 months or longer, Unrealized Losses	(102,716)	(92,424)
Held To Maturity Securities Continuous Unrealized Loss Position Fair Value1	981,859	974,042
Held-to-maturity, total, unrealized losses	(103,320)	(93,983)
Total securities, Less than 12 months, Estimated Fair Value	96,963	295,809
Total securities, Less than 12 months, Unrealized Losses	(674)	(1,823)
Total securities, 12 months or longer, Estimated Fair Value	1,175,569	1,301,465
Total securities, 12 months or longer, Unrealized Losses	(125,844)	(118,541)
Total securities, Estimated Fair Value	1,272,532	1,597,274
Total securities, Unrealized Losses	(126,518)	(120,364)
Mortgage-backed securities:
Debt securities available-for-sale:
Available-for-sale, Less than 12 months, Estimated Fair Value	0	169,000
Available-for-sale, Less than 12 months, Unrealized Losses	0	(97)
Available-for-sale, 12 months or Longer, Estimated Fair Value	93,160	94,335
Available-for-sale, 12 months or longer, Unrealized Losses	(15,955)	(15,255)
Available-for-sale, Total, Estimated Fair Value	93,160	263,335
Available-for-sale, Total, Unrealized Losses	(15,955)	(15,352)
Debt securities held-to-maturity:
Held-to-maturity, Less than 12 months, Estimated Fair Value	75,575	114,678
Held-to-maturity, Less than 12 months, Unrealized Losses	(564)	(1,063)
Held-to-maturity, 12 months or longer, Estimated Fair Value	659,751	599,712
Held-to-maturity, 12 months or longer, Unrealized Losses	(83,762)	(74,429)
Held To Maturity Securities Continuous Unrealized Loss Position Fair Value1	735,326	714,390
Held-to-maturity, total, unrealized losses	(84,326)	(75,492)
U.S. government and agency obligations | Investment securities
Debt securities available-for-sale:
Available-for-sale, Less than 12 months, Estimated Fair Value	5,284	833
Available-for-sale, Less than 12 months, Unrealized Losses	(25)	(2)
Available-for-sale, 12 months or Longer, Estimated Fair Value	49,272	59,861
Available-for-sale, 12 months or longer, Unrealized Losses	(5,994)	(5,794)
Available-for-sale, Total, Estimated Fair Value	54,556	60,694
Available-for-sale, Total, Unrealized Losses	(6,019)	(5,796)
Corporate debt securities
Debt securities held-to-maturity:
Held-to-maturity, total, unrealized losses	(2,489)	(3,941)
Corporate debt securities | Investment securities
Debt securities available-for-sale:
Available-for-sale, Less than 12 months, Estimated Fair Value	938	1,543
Available-for-sale, Less than 12 months, Unrealized Losses	(17)	(165)
Available-for-sale, 12 months or Longer, Estimated Fair Value	5,817	6,116
Available-for-sale, 12 months or longer, Unrealized Losses	(905)	(816)
Available-for-sale, Total, Estimated Fair Value	6,755	7,659
Available-for-sale, Total, Unrealized Losses	(922)	(981)
Debt securities held-to-maturity:
Held-to-maturity, Less than 12 months, Estimated Fair Value	3,572	3,084
Held-to-maturity, Less than 12 months, Unrealized Losses	0	(473)
Held-to-maturity, 12 months or longer, Estimated Fair Value	57,446	58,386
Held-to-maturity, 12 months or longer, Unrealized Losses	(2,489)	(3,468)
Held To Maturity Securities Continuous Unrealized Loss Position Fair Value1	61,018	61,470
Held-to-maturity, total, unrealized losses	(2,489)	(3,941)
Asset-backed securities | Investment securities
Debt securities available-for-sale:
Available-for-sale, Less than 12 months, Estimated Fair Value	5,972	0
Available-for-sale, Less than 12 months, Unrealized Losses	(28)	0
Available-for-sale, 12 months or Longer, Estimated Fair Value	130,230	291,544
Available-for-sale, 12 months or longer, Unrealized Losses	(274)	(4,252)
Available-for-sale, Total, Estimated Fair Value	136,202	291,544
Available-for-sale, Total, Unrealized Losses	(302)	(4,252)
Agency residential
Debt securities held-to-maturity:
Held-to-maturity, total, unrealized losses	(77,345)	(70,040)
Agency residential | Mortgage-backed securities:
Debt securities available-for-sale:
Available-for-sale, Less than 12 months, Estimated Fair Value		169,000
Available-for-sale, Less than 12 months, Unrealized Losses		(97)
Available-for-sale, 12 months or Longer, Estimated Fair Value		0
Available-for-sale, 12 months or longer, Unrealized Losses		0
Available-for-sale, Total, Estimated Fair Value		169,000
Available-for-sale, Total, Unrealized Losses		(97)
Debt securities held-to-maturity:
Held-to-maturity, Less than 12 months, Estimated Fair Value	66,646	95,776
Held-to-maturity, Less than 12 months, Unrealized Losses	(510)	(693)
Held-to-maturity, 12 months or longer, Estimated Fair Value	574,088	525,751
Held-to-maturity, 12 months or longer, Unrealized Losses	(76,835)	(69,347)
Held To Maturity Securities Continuous Unrealized Loss Position Fair Value1	640,734	621,527
Held-to-maturity, total, unrealized losses	(77,345)	(70,040)
Agency commercial
Debt securities held-to-maturity:
Held-to-maturity, total, unrealized losses	(5,443)	(3,678)
Agency commercial | Mortgage-backed securities:
Debt securities available-for-sale:
Available-for-sale, Less than 12 months, Estimated Fair Value	0	0
Available-for-sale, Less than 12 months, Unrealized Losses	0	0
Available-for-sale, 12 months or Longer, Estimated Fair Value	93,160	94,335
Available-for-sale, 12 months or longer, Unrealized Losses	(15,955)	(15,255)
Available-for-sale, Total, Estimated Fair Value	93,160	94,335
Available-for-sale, Total, Unrealized Losses	(15,955)	(15,255)
Debt securities held-to-maturity:
Held-to-maturity, Less than 12 months, Estimated Fair Value	8,929	18,902
Held-to-maturity, Less than 12 months, Unrealized Losses	(54)	(370)
Held-to-maturity, 12 months or longer, Estimated Fair Value	66,670	55,051
Held-to-maturity, 12 months or longer, Unrealized Losses	(5,389)	(3,308)
Held To Maturity Securities Continuous Unrealized Loss Position Fair Value1	75,599	73,953
Held-to-maturity, total, unrealized losses	(5,443)	(3,678)
Non-agency commercial
Debt securities held-to-maturity:
Held-to-maturity, total, unrealized losses	(1,538)	(1,774)
Non-agency commercial | Mortgage-backed securities:
Debt securities held-to-maturity:
Held-to-maturity, Less than 12 months, Estimated Fair Value	0	0
Held-to-maturity, Less than 12 months, Unrealized Losses	0	0
Held-to-maturity, 12 months or longer, Estimated Fair Value	18,993	18,910
Held-to-maturity, 12 months or longer, Unrealized Losses	(1,538)	(1,774)
Held To Maturity Securities Continuous Unrealized Loss Position Fair Value1	18,993	18,910
Held-to-maturity, total, unrealized losses	(1,538)	(1,774)
State, municipal, and sovereign debt obligations
Debt securities held-to-maturity:
Held-to-maturity, total, unrealized losses	(16,505)	(14,550)
State, municipal, and sovereign debt obligations | Investment securities
Debt securities held-to-maturity:
Held-to-maturity, Less than 12 months, Estimated Fair Value	5,622	6,671
Held-to-maturity, Less than 12 months, Unrealized Losses	(40)	(23)
Held-to-maturity, 12 months or longer, Estimated Fair Value	179,893	191,511
Held-to-maturity, 12 months or longer, Unrealized Losses	(16,465)	(14,527)
Held To Maturity Securities Continuous Unrealized Loss Position Fair Value1	185,515	198,182
Held-to-maturity, total, unrealized losses	$ (16,505)	$ (14,550)