Securities Available for Sale (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	$ 547,711	$ 419,795
Gross Unrealized Gains	28,395	13,504
Gross Unrealized Losses	(506)	(1,066)
Fair Value	575,600	432,233
U.S. Treasury and U.S. government sponsored entities
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	11,798	3,773
Gross Unrealized Gains	101	41
Gross Unrealized Losses	(54)	(3)
Fair Value	11,845	3,811
State and political subdivisions
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	344,160	250,905
Gross Unrealized Gains	22,350	10,944
Gross Unrealized Losses	(204)	(424)
Fair Value	366,306	261,425
Mortgage-backed securities - residential
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	157,106	145,886
Gross Unrealized Gains	4,919	2,396
Gross Unrealized Losses	(243)	(372)
Fair Value	161,782	147,910
Collateralized mortgage obligations
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	25,654	11,459
Gross Unrealized Gains	742	101
Gross Unrealized Losses	(3)	(213)
Fair Value	26,393	11,347
Corporate bonds
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	3,582	1,238
Gross Unrealized Gains	132	22
Gross Unrealized Losses	(2)	0
Fair Value	3,712	1,260
Small Business Administration
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	5,411	6,534
Gross Unrealized Gains	151	0
Gross Unrealized Losses	0	(54)
Fair Value	$ 5,562	$ 6,480

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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