Consolidated Statements Of Changes In Shareholders' Equity (Parenthetical) - $ / shares	3 Months Ended
	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018
Statement of Stockholders' Equity [Abstract]
Issuance of restricted stock, stock incentive plan, shares	2,400	0	10,000	0	0	9,109
Issuance of common stock, dividend investment plan, shares	2,808	5,708	3,685	1,285	3,171	5,681
Stock Issued During Period, Shares, Employee Benefit Plan	0	4,064	0	646	3,767	0
Repurchase and retirement of common stock, shares	0	43,555	1,500	1,653	0	5,000
Dividends declared, per share	$ 0.25	$ 0.25	$ 0.24	$ 0.24	$ 0.23	$ 0.23