CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (Parentheticals) - $ / shares	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Cash dividends per share preferred stock (in dollars per share)	$ 700.00	$ 700.00	$ 386.94
Cash dividends per share common stock (in dollars per share)	$ 1.09	$ 0.96	$ 0.80
Issuance of shares of Series E preferred stock (in shares)			11,500
Issuance of common stock (in shares)	192,130	181,402	5,389,584
Series C Preferred Stock
Cash dividends per share preferred stock (in dollars per share)		$ 2.50	$ 2.50