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Consolidated Statement of Changes in Stockholders' Equity (Parenthetical) - $ / shares	3 Months Ended		12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 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
Series D Preferred Stock [Member]
Preferred stock, dividend rate		4.50%
Series H Preferred Stock [Member]
Preferred stock, dividend rate	3.50%	3.50%	3.50%
Series I Preferred Stock [Member]
Preferred stock, dividend rate	3.00%	3.00%	3.00%

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Stock Issued During Period, Shares, Stock Option Exercised, Excluding Cashless Exercises

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