Consolidated Statements Of Changes In Shareholders' Equity (Unaudited) (Parenthetical) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Cash dividends declared per common share (usd per share)	$ 0.28	$ 0.25	$ 0.84	$ 0.75
Series D Preferred Stock
Dividends on preferred stock (usd per share)	0.41	$ 0.41	1.23	$ 1.23
Series E Preferred Stock
Dividends on preferred stock (usd per share)	$ 716.15		$ 716.15