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Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	$ 414,281	$ 407,276
Gross Unrealized Gains	10,859	2,231
Gross Unrealized Losses	(888)	(7,317)
Fair Value	424,252	402,190
U.S. Treasury and U.S. government sponsored entities
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	5,861	6,111
Gross Unrealized Gains	30	0
Gross Unrealized Losses	(9)	(102)
Fair Value	5,882	6,009
State and political subdivisions
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	222,738	211,762
Gross Unrealized Gains	8,580	2,075
Gross Unrealized Losses	0	(1,893)
Fair Value	231,318	211,944
Mortgage-backed securities - residential
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	152,506	154,130
Gross Unrealized Gains	1,747	84
Gross Unrealized Losses	(504)	(4,167)
Fair Value	153,749	150,047
Collateralized mortgage obligations - residential
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	20,514	21,775
Gross Unrealized Gains	454	72
Gross Unrealized Losses	(319)	(775)
Fair Value	20,649	21,072
Corporate bonds
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	1,419	1,206
Gross Unrealized Gains	14	0
Gross Unrealized Losses	(1)	(18)
Fair Value	1,432	1,188
Small Business Administration
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	11,243	12,292
Gross Unrealized Gains	34	0
Gross Unrealized Losses	(55)	(362)
Fair Value	$ 11,222	$ 11,930

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