Investment Securities - Schedule of Gross Unrealized Losses (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025
Investment Securities
Fair Value, Less than 12 months	$ 715,220	$ 377,292
Gross Unrealized Loss , Less than 12 months	(5,123)	(1,078)
Fair Value, 12 months or more	540,943	626,005
Gross Unrealized Loss , 12 months or more	(48,238)	(48,589)
Fair Value, Total	1,256,163	1,003,297
Gross Unrealized Loss , Total	(53,361)	(49,667)
U.S. government agency securities
Investment Securities
Fair Value, Less than 12 months	482,620	274,195
Gross Unrealized Loss , Less than 12 months	(1,211)	(500)
Fair Value, 12 months or more	256,131	275,887
Gross Unrealized Loss , 12 months or more	(1,861)	(1,685)
Fair Value, Total	738,751	550,082
Gross Unrealized Loss , Total	(3,072)	(2,185)
Mortgage-backed securities - residential
Investment Securities
Fair Value, Less than 12 months	197,976	97,187
Gross Unrealized Loss , Less than 12 months	(3,601)	(567)
Fair Value, 12 months or more	152,501	207,127
Gross Unrealized Loss , 12 months or more	(29,672)	(29,114)
Fair Value, Total	350,477	304,314
Gross Unrealized Loss , Total	(33,273)	(29,681)
Mortgage-backed securities - commercial
Investment Securities
Fair Value, Less than 12 months	6,327	1,898
Gross Unrealized Loss , Less than 12 months	(109)	(9)
Fair Value, 12 months or more	8,647	8,780
Gross Unrealized Loss , 12 months or more	(526)	(477)
Fair Value, Total	14,974	10,678
Gross Unrealized Loss , Total	(635)	(486)
Municipal securities
Investment Securities
Fair Value, Less than 12 months	20,238	4,012
Gross Unrealized Loss , Less than 12 months	(118)	(2)
Fair Value, 12 months or more	123,664	133,213
Gross Unrealized Loss , 12 months or more	(16,179)	(17,311)
Fair Value, Total	143,902	137,225
Gross Unrealized Loss , Total	(16,297)	(17,313)
U.S. Treasury securities
Investment Securities
Fair Value, Less than 12 months	7,066
Gross Unrealized Loss , Less than 12 months	(77)
Fair Value, 12 months or more	0
Gross Unrealized Loss , 12 months or more	0
Fair Value, Total	7,066
Gross Unrealized Loss , Total	(77)
Corporate securities
Investment Securities
Fair Value, Less than 12 months	993	0
Gross Unrealized Loss , Less than 12 months	(7)	0
Fair Value, 12 months or more	0	998
Gross Unrealized Loss , 12 months or more	0	(2)
Fair Value, Total	993	998
Gross Unrealized Loss , Total	$ (7)	$ (2)

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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