Investment Securities Security Type - Available for Sale (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Debt Securities, Available-for-sale [Line Items]
Securities available for sale, amortized cost	$ 837,701	$ 765,546
Securities available for sale, gross unrealized gains	18	5,076
Securities available for sale, gross unrealized losses	(105,749)	(11,800)
Securities available for sale, fair value	731,970	758,822
State and political subdivisions [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale, amortized cost	244,056	231,903
Securities available for sale, gross unrealized gains	18	3,161
Securities available for sale, gross unrealized losses	(42,286)	(2,617)
Securities available for sale, fair value	201,788	232,447
Collateralized mortgage obligations [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale, amortized cost	365,620	325,406
Securities available for sale, gross unrealized gains	0	1,627
Securities available for sale, gross unrealized losses	(39,111)	(6,260)
Securities available for sale, fair value	326,509	320,773
Mortgage-backed securities [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale, amortized cost	176,327	157,607
Securities available for sale, gross unrealized gains	0	167
Securities available for sale, gross unrealized losses	(22,159)	(2,714)
Securities available for sale, fair value	154,168	155,060
Collateralized loan obligations [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale, amortized cost	37,948	37,880
Securities available for sale, gross unrealized gains	0	59
Securities available for sale, gross unrealized losses	(1,150)	(157)
Securities available for sale, fair value	36,798	37,782
Corporate notes [Member]
Debt Securities, Available-for-sale [Line Items]
Securities available for sale, amortized cost	13,750	12,750
Securities available for sale, gross unrealized gains	0	62
Securities available for sale, gross unrealized losses	(1,043)	(52)
Securities available for sale, fair value	$ 12,707	$ 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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