Consolidated Statements of Stockholders' Equity (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Common Stock, Dividends, Per Share, Declared	$ 0.7875	$ 1.05	$ 1.02
Series A Preferred Stock [Member]
Preferred Stock, Dividends Per Share, Declared	5.00	5.00	5.00
Series A1 And M1 Preferred Stock
Preferred Stock, Dividends Per Share, Declared	5.00
Minimum [Member] | Series M Preferred Stock [Member]
Preferred Stock, Dividends Per Share, Declared	4.79	4.79	4.79
Minimum [Member] | Series A1 And M1 Preferred Stock
Preferred Stock, Dividends Per Share, Declared	5.08
Maximum [Member] | Series M Preferred Stock [Member]
Preferred Stock, Dividends Per Share, Declared	6.25	$ 6.25	$ 6.25
Maximum [Member] | Series A1 And M1 Preferred Stock
Preferred Stock, Dividends Per Share, Declared	$ 5.92