Investment Securities - Schedule of Investment Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Securities Available for Sale:
Amortized Cost	$ 431,387	$ 372,231
Gross Unrealized Gains	5,882	8,997
Gross Unrealized Losses	(3,540)	(414)
Fair Value	433,729	380,814
U.S. treasury securities
Securities Available for Sale:
Amortized Cost	245	245
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	245	245
U.S. agency
Securities Available for Sale:
Amortized Cost	9,863	1,000
Gross Unrealized Gains	11	4
Gross Unrealized Losses	(70)	0
Fair Value	9,804	1,004
Mutual fund
Securities Available for Sale:
Amortized Cost	3,998
Gross Unrealized Gains	0
Gross Unrealized Losses	0
Fair Value	3,998
State, county & municipal securities
Securities Available for Sale:
Amortized Cost	73,041	61,298
Gross Unrealized Gains	356	1,155
Gross Unrealized Losses	(1,073)	(65)
Fair Value	72,324	62,388
Corporate debt securities
Securities Available for Sale:
Amortized Cost	5,250	4,250
Gross Unrealized Gains	1	1
Gross Unrealized Losses	(22)	(1)
Fair Value	5,229	4,250
Mortgage-backed securities
Securities Available for Sale:
Amortized Cost	338,990	305,438
Gross Unrealized Gains	5,514	7,837
Gross Unrealized Losses	(2,375)	(348)
Fair Value	$ 342,129	$ 312,927

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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