Investment Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Investment securities available-for-sale
Amortized Cost	$ 481,338	$ 307,764
Unrealized Gains	14,219	3,061
Unrealized Losses	(143)	(475)
Fair Value	495,414	310,350
U. S. Treasury and agencies
Investment securities available-for-sale
Amortized Cost	16,075	21,246
Unrealized Gains	34	9
Unrealized Losses	(17)	(15)
Fair Value	16,092	21,240
Obligations of state and political agencies
Investment securities available-for-sale
Amortized Cost	142,308	68,162
Unrealized Gains	4,908	647
Unrealized Losses		(161)
Fair Value	147,216	68,648
Mortgage backed securities - Residential Agency
Investment securities available-for-sale
Amortized Cost	203,812	180,411
Unrealized Gains	7,933	2,258
Unrealized Losses	(45)	(131)
Fair Value	211,700	182,538
Mortgage backed securities - Commercial
Investment securities available-for-sale
Amortized Cost	86,502	30,752
Unrealized Gains	1,092	101
Unrealized Losses	(52)	(168)
Fair Value	87,542	30,685
Asset backed securities
Investment securities available-for-sale
Amortized Cost	123	139
Unrealized Gains	8	5
Fair Value	131	144
Corporate bonds
Investment securities available-for-sale
Amortized Cost	32,518	7,054
Unrealized Gains	244	41
Unrealized Losses	(29)
Fair Value	$ 32,733	$ 7,095

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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