Securities - Schedule of Estimated Fair Value and Unrealized Losses for Debt Securities Available-for-Sale and Held-to-Maturity (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Schedule Of Available For Sale Securities And Held To Maturity Securities [Line Items]
Available-for-sale, Less than 12 Months, Estimated Fair Value	$ 171,376	$ 184,141
Available-for-sale, Less than 12 Months, Unrealized Losses	(264)	(11,497)
Available-for-sale, 12 Months or Longer, Estimated Fair Value	451,856	273,507
Available-for-sale, 12 Months or Longer, Unrealized Losses	(26,117)	(34,260)
Available-for-sale, Total, Estimated Fair Value	623,232	457,648
Available-for-sale, Total, Unrealized Losses	(26,381)	(45,757)
Held-to-maturity, Less than 12 Months, Estimated Fair Value	124,433	485,346
Held-to-maturity, Less than 12 Months, Unrealized Losses	(1,559)	(27,709)
Held-to-maturity, 12 Months or Longer, Estimated Fair Value	849,609	538,583
Held-to-maturity, 12 Months or Longer, Unrealized Losses	(92,424)	(85,761)
Held-to-maturity, Total, Estimated Fair Value	974,042	1,023,929
Held-to-maturity, Total, Unrealized Losses	(93,983)	(113,470)
Total securities, Less than 12 Months, Estimated Fair Value	295,809	669,487
Total securities, Less than 12 Months, Unrealized Losses	(1,823)	(39,206)
Total securities, 12 Months or Longer, Estimated Fair Value	1,301,465	812,090
Total securities, 12 Months or Longer, Unrealized Losses	(118,541)	(120,021)
Total securities, Estimated Fair Value	1,597,274	1,481,577
Total securities, Unrealized Losses	(120,364)	(159,227)
U.S. government and agency obligations | Investment securities
Schedule Of Available For Sale Securities And Held To Maturity Securities [Line Items]
Available-for-sale, Less than 12 Months, Estimated Fair Value	833	27,232
Available-for-sale, Less than 12 Months, Unrealized Losses	(2)	(450)
Available-for-sale, 12 Months or Longer, Estimated Fair Value	59,861	52,782
Available-for-sale, 12 Months or Longer, Unrealized Losses	(5,794)	(7,185)
Available-for-sale, Total, Estimated Fair Value	60,694	80,014
Available-for-sale, Total, Unrealized Losses	(5,796)	(7,635)
Corporate debt securities
Schedule Of Available For Sale Securities And Held To Maturity Securities [Line Items]
Held-to-maturity, Total, Unrealized Losses	(3,941)	(1,765)
Corporate debt securities | Investment securities
Schedule Of Available For Sale Securities And Held To Maturity Securities [Line Items]
Available-for-sale, Less than 12 Months, Estimated Fair Value	1,543	4,735
Available-for-sale, Less than 12 Months, Unrealized Losses	(165)	(193)
Available-for-sale, 12 Months or Longer, Estimated Fair Value	6,116	3,437
Available-for-sale, 12 Months or Longer, Unrealized Losses	(816)	(563)
Available-for-sale, Total, Estimated Fair Value	7,659	8,172
Available-for-sale, Total, Unrealized Losses	(981)	(756)
Held-to-maturity, Less than 12 Months, Estimated Fair Value	3,084	11,783
Held-to-maturity, Less than 12 Months, Unrealized Losses	(473)	(598)
Held-to-maturity, 12 Months or Longer, Estimated Fair Value	58,386	36,152
Held-to-maturity, 12 Months or Longer, Unrealized Losses	(3,468)	(1,167)
Held-to-maturity, Total, Estimated Fair Value	61,470	47,935
Held-to-maturity, Total, Unrealized Losses	(3,941)	(1,765)
Asset-backed securities | Investment securities
Schedule Of Available For Sale Securities And Held To Maturity Securities [Line Items]
Available-for-sale, Less than 12 Months, Estimated Fair Value	0	143,392
Available-for-sale, Less than 12 Months, Unrealized Losses	0	(9,179)
Available-for-sale, 12 Months or Longer, Estimated Fair Value	291,544	133,481
Available-for-sale, 12 Months or Longer, Unrealized Losses	(4,252)	(10,170)
Available-for-sale, Total, Estimated Fair Value	291,544	276,873
Available-for-sale, Total, Unrealized Losses	(4,252)	(19,349)
Mortgage-Backed Securities
Schedule Of Available For Sale Securities And Held To Maturity Securities [Line Items]
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	94,335
Available-for-sale, 12 Months or Longer, Unrealized Losses	(15,255)
Available-for-sale, Total, Estimated Fair Value	263,335
Available-for-sale, Total, Unrealized Losses	(15,352)
Held-to-maturity, Less than 12 Months, Estimated Fair Value	114,678	340,071
Held-to-maturity, Less than 12 Months, Unrealized Losses	(1,063)	(15,159)
Held-to-maturity, 12 Months or Longer, Estimated Fair Value	599,712	405,296
Held-to-maturity, 12 Months or Longer, Unrealized Losses	(74,429)	(71,606)
Held-to-maturity, Total, Estimated Fair Value	714,390	745,367
Held-to-maturity, Total, Unrealized Losses	(75,492)	(86,765)
Mortgage-Backed Securities | Investment securities
Schedule Of Available For Sale Securities And Held To Maturity Securities [Line Items]
Available-for-sale, Less than 12 Months, Estimated Fair Value		8,782
Available-for-sale, Less than 12 Months, Unrealized Losses		(1,675)
Available-for-sale, 12 Months or Longer, Estimated Fair Value		83,807
Available-for-sale, 12 Months or Longer, Unrealized Losses		(16,342)
Available-for-sale, Total, Estimated Fair Value		92,589
Available-for-sale, Total, Unrealized Losses		(18,017)
Mortgage-Backed Securities | Agency residential
Schedule Of Available For Sale Securities And Held To Maturity Securities [Line Items]
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)
Held-to-maturity, Less than 12 Months, Estimated Fair Value	95,776	297,297
Held-to-maturity, Less than 12 Months, Unrealized Losses	(693)	(12,388)
Held-to-maturity, 12 Months or Longer, Estimated Fair Value	525,751	397,036
Held-to-maturity, 12 Months or Longer, Unrealized Losses	(69,347)	(70,914)
Held-to-maturity, Total, Estimated Fair Value	621,527	694,333
Held-to-maturity, Total, Unrealized Losses	(70,040)	(83,302)
Mortgage-Backed Securities | Agency commercial
Schedule Of Available For Sale Securities And Held To Maturity Securities [Line Items]
Available-for-sale, Less than 12 Months, Estimated Fair Value	0
Available-for-sale, Less than 12 Months, Unrealized Losses	0
Available-for-sale, 12 Months or Longer, Estimated Fair Value	94,335
Available-for-sale, 12 Months or Longer, Unrealized Losses	(15,255)
Available-for-sale, Total, Estimated Fair Value	94,335
Available-for-sale, Total, Unrealized Losses	(15,255)
Held-to-maturity, Less than 12 Months, Estimated Fair Value	18,902	25,936
Held-to-maturity, Less than 12 Months, Unrealized Losses	(370)	(1,150)
Held-to-maturity, 12 Months or Longer, Estimated Fair Value	55,051	2,062
Held-to-maturity, 12 Months or Longer, Unrealized Losses	(3,308)	(39)
Held-to-maturity, Total, Estimated Fair Value	73,953	27,998
Held-to-maturity, Total, Unrealized Losses	(3,678)	(1,189)
Mortgage-Backed Securities | Non-agency commercial
Schedule Of Available For Sale Securities And Held To Maturity Securities [Line Items]
Held-to-maturity, Less than 12 Months, Estimated Fair Value	0	16,838
Held-to-maturity, Less than 12 Months, Unrealized Losses	0	(1,621)
Held-to-maturity, 12 Months or Longer, Estimated Fair Value	18,910	6,198
Held-to-maturity, 12 Months or Longer, Unrealized Losses	(1,774)	(653)
Held-to-maturity, Total, Estimated Fair Value	18,910	23,036
Held-to-maturity, Total, Unrealized Losses	(1,774)	(2,274)
State, municipal and sovereign debt obligations
Schedule Of Available For Sale Securities And Held To Maturity Securities [Line Items]
Held-to-maturity, Total, Unrealized Losses	(14,550)	(24,940)
State, municipal and sovereign debt obligations | Investment securities
Schedule Of Available For Sale Securities And Held To Maturity Securities [Line Items]
Held-to-maturity, Less than 12 Months, Estimated Fair Value	6,671	133,492
Held-to-maturity, Less than 12 Months, Unrealized Losses	(23)	(11,952)
Held-to-maturity, 12 Months or Longer, Estimated Fair Value	191,511	97,135
Held-to-maturity, 12 Months or Longer, Unrealized Losses	(14,527)	(12,988)
Held-to-maturity, Total, Estimated Fair Value	198,182	230,627
Held-to-maturity, Total, Unrealized Losses	$ (14,550)	$ (24,940)