Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	$ 455,495	$ 419,795
Gross Unrealized Gains	26,147	13,504
Gross Unrealized Losses	(133)	(1,066)
Fair Value	481,509	432,233
U.S. Treasury and U.S. government sponsored entities
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	3,790	3,773
Gross Unrealized Gains	118	41
Gross Unrealized Losses	0	(3)
Fair Value	3,908	3,811
State and political subdivisions
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	307,946	250,905
Gross Unrealized Gains	19,606	10,944
Gross Unrealized Losses	(131)	(424)
Fair Value	327,421	261,425
Mortgage-backed securities - residential
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	105,799	145,886
Gross Unrealized Gains	5,263	2,396
Gross Unrealized Losses	0	(372)
Fair Value	111,062	147,910
Collateralized mortgage obligations - residential
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	28,734	11,459
Gross Unrealized Gains	827	101
Gross Unrealized Losses	(2)	(213)
Fair Value	29,559	11,347
Corporate bonds
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	3,574	1,238
Gross Unrealized Gains	147	22
Gross Unrealized Losses	0	0
Fair Value	3,721	1,260
Small Business Administration
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	5,652	6,534
Gross Unrealized Gains	186	0
Gross Unrealized Losses	0	(54)
Fair Value	$ 5,838	$ 6,480

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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