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Investment Securities - Schedule of Investment Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Marketable Securities [Line Items]
Amortized Cost	$ 664,271	$ 338,047
Gross Unrealized Gains	13,138	19,679
Gross Unrealized Losses	(3,956)	0
Fair Value	673,453	357,726
State and political subdivisions
Marketable Securities [Line Items]
Amortized Cost	359,187	287,059
Gross Unrealized Gains	12,931	18,915
Gross Unrealized Losses	(990)	0
Fair Value	371,128	305,974
Mortgage-backed securities issued or guaranteed by U.S. government agencies or sponsored enterprises
Marketable Securities [Line Items]
Amortized Cost	170,711	50,988
Gross Unrealized Gains	135	764
Gross Unrealized Losses	(2,200)	0
Fair Value	168,646	$ 51,752
Corporate bonds
Marketable Securities [Line Items]
Amortized Cost	84,538
Gross Unrealized Gains	72
Gross Unrealized Losses	(272)
Fair Value	84,338
Asset backed securities issued or guaranteed by U.S. Government agencies or sponsored enterprises
Marketable Securities [Line Items]
Amortized Cost	49,835
Gross Unrealized Gains	0
Gross Unrealized Losses	(494)
Fair Value	$ 49,341

X

- 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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