Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	$ 409,277	$ 407,276
Gross Unrealized Gains	14,506	2,231
Gross Unrealized Losses	(590)	(7,317)
Fair Value	423,193	402,190
U.S. Treasury and U.S. government sponsored entities
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	4,312	6,111
Gross Unrealized Gains	47	0
Gross Unrealized Losses	(4)	(102)
Fair Value	4,355	6,009
State and political subdivisions
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	226,289	211,762
Gross Unrealized Gains	11,726	2,075
Gross Unrealized Losses	0	(1,893)
Fair Value	238,015	211,944
Mortgage-backed securities - residential
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	146,869	154,130
Gross Unrealized Gains	2,175	84
Gross Unrealized Losses	(332)	(4,167)
Fair Value	148,712	150,047
Collateralized mortgage obligations - residential
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	19,615	21,775
Gross Unrealized Gains	484	72
Gross Unrealized Losses	(231)	(775)
Fair Value	19,868	21,072
Corporate bonds
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	1,239	1,206
Gross Unrealized Gains	21	0
Gross Unrealized Losses	(1)	(18)
Fair Value	1,259	1,188
Small Business Administration
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	10,953	12,292
Gross Unrealized Gains	53	0
Gross Unrealized Losses	(22)	(362)
Fair Value	$ 10,984	$ 11,930

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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