Income Taxes (Schedule of Reconciliation of Expected Income Tax Expense (Benefit)) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Expected income tax expense									$ 6,385	$ 7,868	$ 7,633
(Reductions) increases resulting from:
Tax-exempt income									(1,588)	(1,755)	(2,009)
State taxes, net of federal benefit									356	1,218	732
Share-based compensation adjustment									70	(281)	(286)
Adjustment of deferred tax asset or liability for TCJA											(74)
Other, net									(58)	12	83
Total income tax expense	$ 1,072	$ 1,285	$ 1,139	$ 1,669	$ 1,791	$ 1,787	$ 1,739	$ 1,745	$ 5,165	$ 7,062	$ 6,079