Consolidated Statements of Shareholders' Equity (Unaudited) (Parentheticals) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Stock Appreciation Rights (SARs) [Member]
Exercise of Stock award, share (in shares)			5,107
Employee Stock Options and Stock Appreciation Rights [Member]
Exercise of Stock award, share (in shares)				5,380
Stock Issued During Period, Shares, Employee Stock Ownership Plan (in shares)	5,176	5,751	15,527	17,252
Common stock issuances from reinvested dividends, number of shares (in shares)	1,619	2,885	5,640	8,657
Common Stock, Dividends, Per Share, Declared (in dollars per share)	$ 0.20	$ 0.18	$ 0.56	$ 0.52
Share-based compensation arrangement by share-based payment award, options, exercises in period (in shares)		5,000
Share-based compensation arrangement by share-based payment award, options, vested in period (in shares)			5,246	3,400
Stock Issued During Period, New Issues (in shares)				1,500