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Securities - Schedule of Available-for-Sale Debt Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 1,380,783	$ 1,367,123
Gross Unrealized Gains	12,338	3,835
Gross Unrealized Losses	102,068	139,426
Fair Value	1,291,053	1,231,532
U.S. Treasuries
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	55,405	75,141
Gross Unrealized Gains	222	140
Gross Unrealized Losses	2,194	3,784
Fair Value	53,433	71,497
Obligations of U.S. Government sponsored entities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	363,764	398,648
Gross Unrealized Gains	5,989	2,008
Gross Unrealized Losses	12,753	20,376
Fair Value	357,000	380,280
Obligations of U.S. states and political subdivisions
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	81,888	86,328
Gross Unrealized Gains	10	4
Gross Unrealized Losses	5,632	8,638
Fair Value	76,266	77,694
U.S. Government agencies
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	104,338	68,130
Gross Unrealized Gains	643	3
Gross Unrealized Losses	3,702	4,879
Fair Value	101,279	63,254
U.S. Government sponsored entities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	772,888	736,376
Gross Unrealized Gains	5,474	1,680
Gross Unrealized Losses	77,731	101,696
Fair Value	700,631	636,360
U.S. corporate debt securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	2,500	2,500
Gross Unrealized Gains	0	0
Gross Unrealized Losses	56	53
Fair Value	$ 2,444	$ 2,447

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- Definition

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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