Consolidated Statements of Changes in Shareholders' Equity (Unaudited) (Parentheticals) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Employee stock purchase plan (in shares)	412	404	1,029	1,106
Dividend reinvestment plan (in shares)	6,733	7,904	19,403	20,814
Cash dividends per common share (in dollars per share)	$ 0.32	$ 0.30	$ 0.94	$ 0.88
Stock grants to directors (in shares)			10,837	10,489
Stock option exercises (in shares)		2,000	1,355	2,000
Share repurchase program (in shares)		288,863		635,773