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Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	$ 448,078	$ 419,795
Gross Unrealized Gains	7,742	13,504
Gross Unrealized Losses	(7,777)	(1,066)
Fair Value	448,043	432,233
U.S. Treasury and U.S. government sponsored entities
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	3,714	3,773
Gross Unrealized Gains	126	41
Gross Unrealized Losses	0	(3)
Fair Value	3,840	3,811
State and political subdivisions
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	273,941	250,905
Gross Unrealized Gains	1,171	10,944
Gross Unrealized Losses	(7,529)	(424)
Fair Value	267,583	261,425
Mortgage-backed securities - residential
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	128,064	145,886
Gross Unrealized Gains	5,857	2,396
Gross Unrealized Losses	0	(372)
Fair Value	133,921	147,910
Collateralized mortgage obligations - residential
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	32,832	11,459
Gross Unrealized Gains	458	101
Gross Unrealized Losses	(239)	(213)
Fair Value	33,051	11,347
Corporate bonds
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	3,262	1,238
Gross Unrealized Gains	90	22
Gross Unrealized Losses	(9)	0
Fair Value	3,343	1,260
Small Business Administration
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	6,265	6,534
Gross Unrealized Gains	40	0
Gross Unrealized Losses	0	(54)
Fair Value	$ 6,305	$ 6,480

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