Consolidated Statements of Changes in Stockholders' Equity (Parentheticals) - $ / shares	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Performance Shares [Member]
Net shares issued in satisfaction of units earned, shares (in shares)	52,353	22,350	34,458
Restricted Stock Units (RSUs) [Member]
Net shares issued in satisfaction of units earned, shares (in shares)	36,006	31,183
Cash dividend declared on preferred stock, per share (in dollars per share)	$ 1.3125	$ 1.3125	$ 0.371875
Cash dividends declared on common stock, per share (in dollars per share)	$ 0.665	$ 0.595	$ 0.48
Exercise of options, shares (in shares)	7,388	15,086	14,247
Restricted stock grants, shares (in shares)	84,057	53,169	44,836
Stock grants, shares (in shares)	995	153	4,981
Net shares issued in satisfaction of units earned, shares (in shares)			14,711
Repurchase of treasury stock, shares (in shares)	904,152	447,108	330,541
Proceeds from preferred stock issuance, net of costs, shares (in shares)			115,000