Preferred Stock, Common Stock and Other Stockholders' Equity - Dividends (Details) - $ / shares	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018
Preferred Stock, Common Stock and Other Stockholders' Equity
Cash dividends per share of common stock paid (in dollars per share)	$ 0.25	$ 0.83	$ 0.82	$ 0.82	$ 0.82	$ 0.82	$ 0.78	$ 0.78	$ 0.78