Investment Securities Available-for-Sale by Security Type (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Debt Securities, Available-for-sale [Line Items]
Investment securities available for sale, amortized cost	$ 802,847	$ 765,546
Investment securities available for sale, gross unrealized gains	4	5,076
Investment securities available for sale, gross unrealized losses	(138,736)	(11,800)
Securities available for sale, at fair value	664,115	758,822
State and political subdivisions [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities available for sale, amortized cost	242,823	231,903
Investment securities available for sale, gross unrealized gains	4	3,161
Investment securities available for sale, gross unrealized losses	(49,472)	(2,617)
Securities available for sale, at fair value	193,355	232,447
Collateralized mortgage obligations [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities available for sale, amortized cost	338,875	325,406
Investment securities available for sale, gross unrealized gains	0	1,627
Investment securities available for sale, gross unrealized losses	(57,247)	(6,260)
Securities available for sale, at fair value	281,628	320,773
Mortgage-backed securities [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities available for sale, amortized cost	169,451	157,607
Investment securities available for sale, gross unrealized gains	0	167
Investment securities available for sale, gross unrealized losses	(29,171)	(2,714)
Securities available for sale, at fair value	140,280	155,060
Collateralized Loan Obligations [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities available for sale, amortized cost	37,948	37,880
Investment securities available for sale, gross unrealized gains	0	59
Investment securities available for sale, gross unrealized losses	(1,137)	(157)
Securities available for sale, at fair value	36,811	37,782
Corporate notes [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities available for sale, amortized cost	13,750	12,750
Investment securities available for sale, gross unrealized gains	0	62
Investment securities available for sale, gross unrealized losses	(1,709)	(52)
Securities available for sale, at fair value	$ 12,041	$ 12,760

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 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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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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