Securities - Amortized Cost and Fair Value of Available-for-sale Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025
Securities [Abstract]
Amortized Cost	$ 1,142,719	$ 1,206,938
Gross unrealized gains	358	1,358
Gross unrealized losses	(91,396)	(87,577)
Fair value	1,051,681	1,120,719
U.S. Treasury and Government Agencies [Member]
Securities [Abstract]
Amortized Cost	154,652	243,840
Gross unrealized gains	47	65
Gross unrealized losses	(7,393)	(8,146)
Fair value	147,306	235,759
State and Political Subdivisions [Member]
Securities [Abstract]
Amortized Cost	285,200	303,118
Gross unrealized gains	51	117
Gross unrealized losses	(37,266)	(36,344)
Fair value	247,985	266,891
Agency Mortgage-backed Securities [Member]
Securities [Abstract]
Amortized Cost	687,825	630,172
Gross unrealized gains	234	1,119
Gross unrealized losses	(46,722)	(43,029)
Fair value	641,337	588,262
Asset-backed Securities [Member]
Securities [Abstract]
Amortized Cost	15,042	29,808
Gross unrealized gains	26	57
Gross unrealized losses	(15)	(58)
Fair value	$ 15,053	$ 29,807

Amortized cost 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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- Definition

Amount 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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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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