Equity Offerings, Offering Expenses, and Distributions - Preferred Stock Narrative (Details) $ / shares in Units, $ in Thousands										3 Months Ended		6 Months Ended
	Feb. 08, 2024 $ / shares	Jan. 25, 2024 $ / shares	Dec. 29, 2023 number_of_month $ / shares	Oct. 30, 2023 USD ($) $ / shares shares	Jun. 09, 2022 $ / shares shares	Jul. 12, 2021 USD ($) number_of_month $ / shares shares	May 26, 2021 $ / shares	Oct. 30, 2020 $ / shares shares	Aug. 03, 2020 shares	Dec. 31, 2023 USD ($) $ / shares shares	Dec. 31, 2022 USD ($)	Dec. 31, 2023 USD ($) number_of_month $ / shares shares	Dec. 31, 2022 USD ($)	Mar. 01, 2024 $ / shares	Feb. 01, 2024 $ / shares	Jan. 31, 2024 $ / shares	Dec. 28, 2023 shares	Jun. 30, 2023 USD ($) $ / shares shares	Feb. 10, 2023 shares	Oct. 11, 2022 shares	Jun. 30, 2022 $ / shares	Feb. 18, 2022 shares	Feb. 17, 2022 shares	Jul. 15, 2021 shares	Jun. 30, 2021 $ / shares	May 19, 2021 shares
Class of Stock [Line Items]
Temporary equity, shares authorized (in shares) | shares										647,900,000		647,900,000						447,900,000
Temporary equity, par value (usd per share)										$ 0.001		$ 0.001						$ 0.001
Temporary equity, liquidation preference (usd per share)										25.00		25.00						$ 25.00
Share price (usd per share)										$ 25.00		$ 25.00
Common stock, consecutive trading days, volume weighted average price												5 days
Redemption eligibility term												5 years
Repurchase of Preferred Stock (in shares) | shares										649,188		711,497
Repurchase of Preferred Stock | $										$ 15,652		$ 17,155
Net gain on redemptions of preferred stock | $										378	$ 0	$ 879	$ 0
Time dividends have remained unpaid												2 years
Dividends payable | $										$ 32,233		$ 32,233						$ 31,033
5.50% Preferred Stock
Class of Stock [Line Items]
Temporary equity, shares authorized (in shares) | shares					80,000,000																	10,000,000
Temporary equity, par value (usd per share)					$ 0.001
Temporary equity, liquidation preference (usd per share)					$ 25.00
Dividend rate					5.50%			5.50%		5.50%	5.50%	5.50%	5.50%
Preferred stock, par value (usd per share)								$ 0.001
Involuntary Liquidating Preference per Unit (usd per share)								$ 25.00		$ 25.00		$ 25.00						$ 25			$ 25				$ 25
Dividend rate									5.50%			5.50%
Share price (usd per share)										$ 23.75		$ 23.75
Benchmark percept of share price										95.00%		95.00%
Redemption price rate										100.00%		100.00%
Calculated interest basis, days												360 days
Calculated interest basis, number of months | number_of_month												12
Calculated interest basis, days in month												30 days
Payments of dividends | $												$ 23,452	$ 22,937
5.50% Preferred Stock | Subsequent Event
Class of Stock [Line Items]
Temporary equity, liquidation preference (usd per share)	$ 25.00
Dividend rate	5.50%
5.50% Preferred Stock | Dividend Declared | Forecast
Class of Stock [Line Items]
Dividends payable (usd per share)														$ 0.114583
5.50% Preferred Stock | Dividend Declared | Subsequent Event
Class of Stock [Line Items]
Dividends payable (usd per share)															$ 0.114583
5.50% Series A1 Preferred Stock
Class of Stock [Line Items]
Dividend rate					5.50%
Share price (usd per share)										$ 25.00		$ 25.00
5.50% Series M1 Preferred Stock
Class of Stock [Line Items]
Dividend rate					5.50%
Conversion of stock, shares converted (in shares) | shares										267,740		267,740
5.50% Series AA1 Preferred Stock
Class of Stock [Line Items]
Dividend rate								5.50%
Share price (usd per share)										$ 25.00		$ 25.00
5.50% Series MM1 Preferred Stock
Class of Stock [Line Items]
Dividend rate								5.50%
5.50% Series A2 Preferred Stock
Class of Stock [Line Items]
Preferred stock, par value (usd per share)							$ 0.001
Involuntary Liquidating Preference per Unit (usd per share)							$ 25.00
Dividend rate							5.50%
Preferred stock, shares authorized (in shares) | shares																										187,000
Share price (usd per share)										$ 25.00		$ 25.00
6.50% Preferred Stock
Class of Stock [Line Items]
Dividend rate										6.50%	6.50%	6.50%	6.50%
Involuntary Liquidating Preference per Unit (usd per share)										$ 25		$ 25						$ 25
Dividend rate								6.50%	6.50%
Payments of dividends | $												$ 19,882	$ 2,411
Dividends payable | $										$ 19		$ 19
6.50% Preferred Stock | Subsequent Event
Class of Stock [Line Items]
Temporary equity, liquidation preference (usd per share)	$ 25.00
Dividend rate	6.50%
6.50% Preferred Stock | Dividend Declared | Forecast
Class of Stock [Line Items]
Dividends payable (usd per share)														$ 0.135417
6.50% Preferred Stock | Dividend Declared | Subsequent Event
Class of Stock [Line Items]
Dividends payable (usd per share)															0.135417
Series A3
Class of Stock [Line Items]
Temporary equity, shares authorized (in shares) | shares										80,000,000		80,000,000						72,000,000
Dividend rate					6.50%
Series M3
Class of Stock [Line Items]
Temporary equity, shares authorized (in shares) | shares										80,000,000		80,000,000						72,000,000
Dividend rate					6.50%
Conversion of stock, shares issued (in shares) | shares										267,740		267,740
Series AA2
Class of Stock [Line Items]
Temporary equity, shares authorized (in shares) | shares										20,000,000		20,000,000						20,000,000
Dividend rate								6.50%
Series MM2
Class of Stock [Line Items]
Temporary equity, shares authorized (in shares) | shares										20,000,000		20,000,000						20,000,000
Dividend rate								6.50%
Convertible Preferred Stock
Class of Stock [Line Items]
Authorized and unissued shares of common stock reclassified into shares of preferred stock (in shares) | shares																										1,000,000
Convertible Preferred Stock | Per Calendar Month
Class of Stock [Line Items]
Redemption limit, percent										2.00%		2.00%
Convertible Preferred Stock | Per Fiscal Quarter
Class of Stock [Line Items]
Redemption limit, percent										5.00%		5.00%
Convertible Preferred Stock | Per Annual Redemption Period
Class of Stock [Line Items]
Redemption limit, percent										20.00%		20.00%
Convertible Preferred Stock | Preferred Capital Securities, LLC Dealer Manager Agreement
Class of Stock [Line Items]
Authorized and unissued shares of common stock reclassified into shares of preferred stock (in shares) | shares					60,000,000				120,000,000										60,000,000	120,000,000
Convertible Preferred Stock | Preferred Capital Securities, LLC Dealer Manager Agreement | Filing One
Class of Stock [Line Items]
Authorized and unissued shares of common stock reclassified into shares of preferred stock (in shares) | shares																	160,000,000
Convertible Preferred Stock | Preferred Capital Securities, LLC Dealer Manager Agreement | Filing Two
Class of Stock [Line Items]
Authorized and unissued shares of common stock reclassified into shares of preferred stock (in shares) | shares																	40,000,000
Convertible Preferred Stock | InspereX LLC Dealer Manager Agreement
Class of Stock [Line Items]
Authorized and unissued shares of common stock reclassified into shares of preferred stock (in shares) | shares								80,000,000												80,000,000			80,000,000
5.35% Preferred Stock
Class of Stock [Line Items]
Authorized and unissued shares of common stock reclassified into shares of preferred stock (in shares) | shares																								6,900,000
Preferred stock, par value (usd per share)						$ 0.001
Involuntary Liquidating Preference per Unit (usd per share)										$ 25		$ 25						$ 25			$ 25
Dividend rate						5.35%
Preferred stock, shares authorized (in shares) | shares						6,000,000
Share price (usd per share)						$ 25.00
Preferred stock, liquidation value | $						$ 150,000
Overallotment purchase option term						30 days
Repurchase of Preferred Stock (in shares) | shares										17,994		80,303
Change of control triggering event threshold						120 days
Preferred stock, conversion ratio						6.03865
Calculated interest basis, days						360 days
Calculated interest basis, number of months | number_of_month						12
Calculated interest basis, days in month						30 days
Payments of dividends | $												$ 3,950	$ 4,012
Dividends payable | $										$ 1,171		$ 1,171
5.35% Preferred Stock | Subsequent Event
Class of Stock [Line Items]
Temporary equity, liquidation preference (usd per share)	$ 25.00
Dividend rate	5.35%
5.35% Preferred Stock | Dividend Declared | Subsequent Event
Class of Stock [Line Items]
Dividends payable (usd per share)															$ 0.334375
5.35% Preferred Stock | Over-Allotment Option
Class of Stock [Line Items]
Preferred stock, shares authorized (in shares) | shares						900,000
Series A Preferred Stock
Class of Stock [Line Items]
Temporary equity, shares authorized (in shares) | shares										6,900,000		6,900,000						6,900,000
Repurchase of Preferred Stock | $										$ 278		$ 1,279
Average repurchase price (usd per share)										$ 15.41		$ 15.76
Difference in the consideration transferred and the net carrying value | $										$ 434		$ 1,936
Net gain on redemptions of preferred stock | $										$ 156		$ 657
5.50% Preferred Stock DRIP
Class of Stock [Line Items]
Dividend rate												5.50%
6.50% Preferred Stock DRIP
Class of Stock [Line Items]
Dividend rate												6.50%
Floating Rate Preferred Stock
Class of Stock [Line Items]
Share price (usd per share)			$ 25.00
Calculated interest basis, days			360 days
Calculated interest basis, number of months | number_of_month			12
Calculated interest basis, days in month			30 days
Annualized floating rate			2.00%
Minimum annualized dividend rate			6.50%
Maximum annualized dividend rate			8.00%
Floating Rate Preferred Stock | Subsequent Event
Class of Stock [Line Items]
Temporary equity, liquidation preference (usd per share)	$ 25.00	$ 25.00
Dividend rate	7.32309%	7.33586%
Common Stock, par value $0.001 per share | Dividend Declared | Subsequent Event
Class of Stock [Line Items]
Dividends payable (usd per share)																$ 0.06
5.35% Series A Fixed Rate Cumulative Perpetual Preferred Stock, par value $0.001 | Tender Offer
Class of Stock [Line Items]
Repurchase of Preferred Stock (in shares) | shares				631,194
Repurchase of Preferred Stock | $				$ 15,780
Average repurchase price (usd per share)				$ 16.00
Net gain on redemptions of preferred stock | $				$ 5,197
Stock repurchase program, number of shares authorized to be repurchased | shares				5,882,351
Average cost per share, gross (in dollars per share)				$ 15.88