Consolidated Statements of Changes in Shareholders' Equity (Unaudited) (Parentheticals) - $ / shares	3 Months Ended	6 Months Ended
Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Common Stock Including Additional Paid in Capital [Member]
Employee stock purchase plan (in shares)	371	487	702	1,129
Dividend reinvestment plan (in shares)	6,263	9,307	12,910	17,380
Stock grants to directors (in shares)	10,489	15,648	10,489	15,648
Share repurchase program (in shares)	228,649		346,910	222,385
Retained Earnings [Member]
Cash dividends per common share (in dollars per share)	$ 0.29	$ 0.28	$ 0.58	$ 0.56
Cash dividends per common share (in dollars per share)	$ 0.29	$ 0.28	$ 0.58	$ 0.56

Aggregate dividends paid during the period for each share of common stock outstanding.

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Number of shares issued during the period from a dividend reinvestment plan (DRIP). A dividend reinvestment plan allows the shareholders to reinvest dividends paid to them by the entity on new issues of stock by the entity.

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