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Securities Available for Sale (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	$ 407,276	$ 392,397
Gross Unrealized Gains	2,231	4,037
Gross Unrealized Losses	(7,317)	(3,497)
Fair Value	402,190	392,937
Corporate bonds
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	1,206	1,238
Gross Unrealized Gains	0	4
Gross Unrealized Losses	(18)	(8)
Fair Value	1,188	1,234
Small Business Administration
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	12,292	14,608
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(362)	(396)
Fair Value	11,930	14,212
U.S. Treasury and U.S. government sponsored entities
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	6,111	8,986
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(102)	(69)
Fair Value	6,009	8,917
State and political subdivisions
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	211,762	188,032
Gross Unrealized Gains	2,075	3,614
Gross Unrealized Losses	(1,893)	(643)
Fair Value	211,944	191,003
Mortgage-backed securities - residential
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	154,130	161,635
Gross Unrealized Gains	84	419
Gross Unrealized Losses	(4,167)	(1,604)
Fair Value	150,047	160,450
Collateralized mortgage obligations
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	21,775	17,898
Gross Unrealized Gains	72	0
Gross Unrealized Losses	(775)	(777)
Fair Value	$ 21,072	$ 17,121

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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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Amount of 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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