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Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	$ 450,251	$ 419,795
Gross Unrealized Gains	25,420	13,504
Gross Unrealized Losses	(57)	(1,066)
Fair Value	475,614	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	123	41
Gross Unrealized Losses	0	(3)
Fair Value	3,913	3,811
State and political subdivisions
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	286,352	250,905
Gross Unrealized Gains	18,148	10,944
Gross Unrealized Losses	(54)	(424)
Fair Value	304,446	261,425
Mortgage-backed securities - residential
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	119,276	145,886
Gross Unrealized Gains	5,968	2,396
Gross Unrealized Losses	0	(372)
Fair Value	125,244	147,910
Collateralized mortgage obligations - residential
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	31,623	11,459
Gross Unrealized Gains	885	101
Gross Unrealized Losses	(3)	(213)
Fair Value	32,505	11,347
Corporate bonds
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	3,161	1,238
Gross Unrealized Gains	149	22
Gross Unrealized Losses	0	0
Fair Value	3,310	1,260
Small Business Administration
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	6,049	6,534
Gross Unrealized Gains	147	0
Gross Unrealized Losses	0	(54)
Fair Value	$ 6,196	$ 6,480

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