Consolidated Statements of Shareholders' Equity (Parentheticals) - $ / shares	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Stock Appreciation Rights (SARs) [Member]
Exercise of Stock award, share (in shares)	5,841		499
Restricted Stock Units (RSUs) [Member]
Share-based compensation arrangement by share-based payment award, other than options, vested in period (in shares)	6,205	4,171	964
Options and Stock Appreciation Rights (SARs) [Member]
Exercise of Stock award, share (in shares)		10,604
Preferred Stock [Member]
Stock Issued During Period, New Issues (in shares)		1,500
Stock Issued During Period, Shares, Employee Stock Ownership Plan (in shares)	20,702	23,002	22,395
Stock Repurchased and Retired During Period, Shares (in shares)		248,244	75,333
Stock Issued During Period, Shares, Acquisitions (in shares)			570,000
Common stock issuances from reinvested dividends, number of shares (in shares)	7,773	11,588	14,937
Common Stock, Dividends, Per Share, Declared (in dollars per share)	$ 0.76	$ 0.70	$ 0.68