Consolidated Statements of Changes in Shareholders' Equity (Unaudited) (Parentheticals) - $ / shares	3 Months Ended
Mar. 31, 2021	Mar. 31, 2020
Common Stock Including Additional Paid in Capital [Member]
Employee stock purchase plan (in shares)	331	642
Dividend reinvestment plan (in shares)	6,647	8,073
Share repurchase program (in shares)	118,261	222,385
Retained Earnings [Member]
Cash dividends per common share (in dollars per share)	$ 0.29	$ 0.28
Cash dividends per common share (in dollars per share)	$ 0.29	$ 0.28

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

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