Securities - Amortized Cost and Fair Value of Debt Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 1,058,154	$ 1,051,313
Gross Unrealized Gains	990	1,746
Gross Unrealized Losses	(72,729)	(83,751)
Fair Value	986,415	969,308
Interest receivable	3,700	3,800
U.S. Treasury securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	97,045	144,292
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(4,277)	(10,506)
Fair Value	92,768	133,786
Obligations of U.S. government corporations and agencies
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	15,260	33,342
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(189)	(829)
Fair Value	15,071	32,513
Collateralized mortgage obligations of U.S. government corporations and agencies
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	643,690	507,942
Gross Unrealized Gains	872	1,068
Gross Unrealized Losses	(48,278)	(48,071)
Fair Value	596,284	460,939
Residential mortgage-backed securities of U.S. government corporations and agencies
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	40,109	44,707
Gross Unrealized Gains	3	7
Gross Unrealized Losses	(6,905)	(6,537)
Fair Value	33,207	38,177
Commercial mortgage-backed securities of U.S. government corporations and agencies
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	237,270	290,775
Gross Unrealized Gains	115	458
Gross Unrealized Losses	(12,587)	(17,808)
Fair Value	224,798	273,425
Obligations of states and political subdivisions
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	24,780	30,255
Gross Unrealized Gains	0	213
Gross Unrealized Losses	(493)	0
Fair Value	$ 24,287	$ 30,468

Interest Receivable, Debt Securities Available For Sale

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Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amortized cost excluding accrued interest, after allowance for credit loss, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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