Income Taxes - Distributions (Details) - $ / shares	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Common Shares
Real Estate Investment Trust Distributions [Line Items]
Ordinary non-qualified income (in usd per share)	$ 0	$ 0.0400	$ 0.0419
Ordinary non-qualified income, percent	0.00%	100.00%	83.80%
Qualified dividend (in usd per share)	$ 0	$ 0	$ 0
Qualified dividend, percent	0.00%	0.00%	0.00%
Capital gain (in usd per share)	$ 0	$ 0	$ 0.0081
Capital gain, percent	0.00%	0.00%	16.20%
Return of capital (in usd per share)	$ 0.0300	$ 0	$ 0
Return of capital, percent	100.00%	0.00%	0.00%
Total (in usd per share)	$ 0.0300	$ 0.0400	$ 0.0500
Total, percent	100.00%	100.00%	100.00%
Series E Preferred Stock
Real Estate Investment Trust Distributions [Line Items]
Ordinary non-qualified income (in usd per share)	$ 0.9786	$ 1.5938	$ 1.6684
Ordinary non-qualified income, percent	81.87%	100.00%	83.75%
Qualified dividend (in usd per share)	$ 0	$ 0	$ 0
Qualified dividend, percent	0.00%	0.00%	0.00%
Capital gain (in usd per share)	$ 0	$ 0	$ 0.3238
Capital gain, percent	0.00%	0.00%	16.25%
Return of capital (in usd per share)	$ 0.2167	$ 0	$ 0
Return of capital, percent	18.13%	0.00%	0.00%
Total (in usd per share)	$ 1.1953	$ 1.5938	$ 1.9922
Total, percent	100.00%	100.00%	100.00%
Series F Preferred Stock
Real Estate Investment Trust Distributions [Line Items]
Ordinary non-qualified income (in usd per share)	$ 0.9671	$ 1.5750	$ 1.6488
Ordinary non-qualified income, percent	81.87%	100.00%	83.75%
Qualified dividend (in usd per share)	$ 0	$ 0	$ 0
Qualified dividend, percent	0.00%	0.00%	0.00%
Capital gain (in usd per share)	$ 0	$ 0	$ 0.3200
Capital gain, percent	0.00%	0.00%	16.25%
Return of capital (in usd per share)	$ 0.2142	$ 0	$ 0
Return of capital, percent	18.13%	0.00%	0.00%
Total (in usd per share)	$ 1.1813	$ 1.5750	$ 1.9688
Total, percent	100.00%	100.00%	100.00%
Series G Preferred Stock
Real Estate Investment Trust Distributions [Line Items]
Ordinary non-qualified income (in usd per share)	$ 0.9786	$ 1.5938	$ 1.6684
Ordinary non-qualified income, percent	81.87%	100.00%	83.75%
Qualified dividend (in usd per share)	$ 0	$ 0	$ 0
Qualified dividend, percent	0.00%	0.00%	0.00%
Capital gain (in usd per share)	$ 0	$ 0	$ 0.3238
Capital gain, percent	0.00%	0.00%	16.25%
Return of capital (in usd per share)	$ 0.2167	$ 0	$ 0
Return of capital, percent	18.13%	0.00%	0.00%
Total (in usd per share)	$ 1.1953	$ 1.5938	$ 1.9922
Total, percent	100.00%	100.00%	100.00%
Series H Preferred Stock
Real Estate Investment Trust Distributions [Line Items]
Ordinary non-qualified income (in usd per share)	$ 0.8750	$ 1.4250	$ 1.4917
Ordinary non-qualified income, percent	81.87%	100.00%	83.75%
Qualified dividend (in usd per share)	$ 0	$ 0	$ 0
Qualified dividend, percent	0.00%	0.00%	0.00%
Capital gain (in usd per share)	$ 0	$ 0	$ 0.2895
Capital gain, percent	0.00%	0.00%	16.25%
Return of capital (in usd per share)	$ 0.1938	$ 0	$ 0
Return of capital, percent	18.13%	0.00%	0.00%
Total (in usd per share)	$ 1.0688	$ 1.4250	$ 1.7812
Total, percent	100.00%	100.00%	100.00%