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Stockholders’ Equity - Dividends on Preferred Stock (Details) - $ / shares	Jan. 15, 2022	Oct. 15, 2021	Jul. 15, 2021	Apr. 15, 2021	Jan. 15, 2021	Oct. 15, 2020	Jul. 15, 2020	Jan. 15, 2020	Oct. 15, 2019	Jul. 15, 2019	Apr. 15, 2019
Series B Preferred Stock
Dividends Payable [Line Items]
Cash Dividend Per Share (in dollars per share)		$ 0.484375	$ 0.484375	$ 0.484375	$ 0.484375	$ 0.484375	$ 0.968750	$ 0.484375	$ 0.484375	$ 0.484375	$ 0.484375
Series C Preferred Stock
Dividends Payable [Line Items]
Cash Dividend Per Share (in dollars per share)		0	0.4921875	0.4921875	0.4921875	0.4921875	0.9843750	0.4921875	0.4921875	0.4921875	0.4921875
Series D Preferred Stock
Dividends Payable [Line Items]
Cash Dividend Per Share (in dollars per share)		0.50	0.50	0.50	0.50	0.50	1.00	0.50	0.50	0.50	0.50
Series E Preferred Stock
Dividends Payable [Line Items]
Cash Dividend Per Share (in dollars per share)		0.4921875	0.4921875	0.4921875	0.4921875	0.4921875	0.9843750	0.4757800	0	0	0
Series F Preferred Stock
Dividends Payable [Line Items]
Cash Dividend Per Share (in dollars per share)		0.4679000	0	0	0	0	0	0	0	0	0
Series G Preferred Stock
Dividends Payable [Line Items]
Cash Dividend Per Share (in dollars per share)		$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0
Subsequent Event | Series B Preferred Stock
Dividends Payable [Line Items]
Cash Dividend Per Share (in dollars per share)	$ 0
Subsequent Event | Series C Preferred Stock
Dividends Payable [Line Items]
Cash Dividend Per Share (in dollars per share)	0
Subsequent Event | Series D Preferred Stock
Dividends Payable [Line Items]
Cash Dividend Per Share (in dollars per share)	0.50
Subsequent Event | Series E Preferred Stock
Dividends Payable [Line Items]
Cash Dividend Per Share (in dollars per share)	0.4921875
Subsequent Event | Series F Preferred Stock
Dividends Payable [Line Items]
Cash Dividend Per Share (in dollars per share)	0.4296875
Subsequent Event | Series G Preferred Stock
Dividends Payable [Line Items]
Cash Dividend Per Share (in dollars per share)	$ 0.24792

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