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Consolidated Statement of Changes in Stockholders' Equity (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Exercise of stock options (shares)		61,000
Treasury stock purchases (shares)		151,753	515
Cash dividends on common stock (per share)	$ 0.16	$ 0.16	$ 0.16
Series D Preferred Stock [Member]
Preferred stock, dividend rate			4.50%
Series H Preferred Stock [Member]
Preferred stock, dividend rate		3.50%	3.50%
Series I Preferred Stock [Member]
Preferred stock, dividend rate	3.00%	3.00%	3.00%
Series J Preferred Stock [Member]
Preferred stock, dividend rate	8.00%

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