Consolidated Statements of Changes in Shareholders' Equity - Unaudited (Parenthetical) - $ / shares	3 Months Ended	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2021
Series C Preferred Stock
Preferred stock, dividends, per share, cash paid (usd per share)	$ 0.350359	$ 0.69514
Series D Preferred Stock
Preferred stock, dividends, per share, cash paid (usd per share)	0.336942	0.743192
Series E Preferred Stock
Preferred stock, dividends, per share, cash paid (usd per share)	0.403125	0.80625
Series F Preferred Stock
Preferred stock, dividends, per share, cash paid (usd per share)	$ 0.375	$ 0.750