Investment Securities - Schedule of Investment Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Jan. 01, 2022	Dec. 31, 2021
Securities Available for Sale:
Amortized cost	$ 721,766		$ 946,511
Gross Unrealized Gains	272		3,562
Gross Unrealized Losses	(64,492)		(11,909)
Fair Value	657,546		938,164
Securities Held to Maturity:
Amortized Cost	304,014		0
Gross Unrealized Gains	0
Gross Unrealized Losses	(34,063)
Fair Value	269,951	$ 309,700
U.S. treasury securities
Securities Available for Sale:
Amortized cost	95,897		88,638
Gross Unrealized Gains	0		0
Gross Unrealized Losses	(6,063)		(1,087)
Fair Value	89,834		87,551
Securities Held to Maturity:
Amortized Cost	21,577
Gross Unrealized Gains	0
Gross Unrealized Losses	(1,395)
Fair Value	20,182
U.S. agency
Securities Available for Sale:
Amortized cost	6,672		17,916
Gross Unrealized Gains	0		5
Gross Unrealized Losses	(381)		(140)
Fair Value	6,291		17,781
Securities Held to Maturity:
Amortized Cost	15,476
Gross Unrealized Gains	0
Gross Unrealized Losses	(1,188)
Fair Value	14,288
Asset backed securities
Securities Available for Sale:
Amortized cost	27,983
Gross Unrealized Gains	0
Gross Unrealized Losses	(845)
Fair Value	27,138
State, county & municipal securities
Securities Available for Sale:
Amortized cost	199,336		252,632
Gross Unrealized Gains	223		877
Gross Unrealized Losses	(26,864)		(3,356)
Fair Value	172,695		250,153
Securities Held to Maturity:
Amortized Cost	88,712
Gross Unrealized Gains	0
Gross Unrealized Losses	(13,084)
Fair Value	75,628
Corporate debt securities
Securities Available for Sale:
Amortized cost	50,073		48,153
Gross Unrealized Gains	45		520
Gross Unrealized Losses	(2,471)		(265)
Fair Value	47,647		48,408
Mortgage-backed securities
Securities Available for Sale:
Amortized cost	341,805		539,172
Gross Unrealized Gains	4		2,160
Gross Unrealized Losses	(27,868)		(7,061)
Fair Value	313,941		$ 534,271
Securities Held to Maturity:
Amortized Cost	178,249
Gross Unrealized Gains	0
Gross Unrealized Losses	(18,396)
Fair Value	$ 159,853

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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