Condensed Financial Statements Of Parent Company Condensed Financial Statements of Parent Company (Narrative) (Details) - $ / shares	Dec. 31, 2019	Dec. 31, 2018
Preferred stock, shares authorized	250,000	250,000
Preferred stock, par value	$ 1.00	$ 1.00
Common stock, par value	$ 2.50	$ 2.50
Common stock, shares authorized	20,000,000	20,000,000
Common stock, shares issued	12,474,641	12,399,887
Common stock, shares outstanding	12,408,542	12,312,933
Employee Stock Ownership Plan (ESOP), Number of Suspense Shares	66,099	86,954