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Investment Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Investment securities available-for-sale
Amortized Cost	$ 578,140	$ 307,764
Unrealized Gains	14,747	3,061
Unrealized Losses	(545)	(475)
Fair Value	592,342	310,350
U.S. treasury and government agencies
Investment securities available-for-sale
Amortized Cost	5,926	21,246
Unrealized Gains		9
Unrealized Losses	(19)	(15)
Fair Value	5,907	21,240
Obligations of state and political agencies
Investment securities available-for-sale
Amortized Cost	148,491	68,162
Unrealized Gains	5,282	647
Unrealized Losses		(161)
Fair Value	153,773	68,648
Mortgage backed securities - Residential agency
Investment securities available-for-sale
Amortized Cost	254,002	180,411
Unrealized Gains	8,002	2,258
Unrealized Losses		(131)
Fair Value	262,004	182,538
Mortgage backed securities - Commercial
Investment securities available-for-sale
Amortized Cost	139,059	30,752
Unrealized Gains	1,070	101
Unrealized Losses	(436)	(168)
Fair Value	139,693	30,685
Asset backed securities
Investment securities available-for-sale
Amortized Cost	109	139
Unrealized Gains	6	5
Fair Value	115	144
Corporate bonds
Investment securities available-for-sale
Amortized Cost	30,553	7,054
Unrealized Gains	387	41
Unrealized Losses	(90)
Fair Value	$ 30,850	$ 7,095

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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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